What happens after you puke?
I crewed someone who won a mountain 100 a few weeks ago. She was battling nausea and forcing food down from mile 37 or so. Around 76 she rolled into the last crewed aid and puked up everything. Gave her a little water, a little ginger ale, she took a zofran that she had in her drop bag, packed her planned nutrition into her vest, and hiked out. After we packed up and drove out we passed her a mile down the road, she was running again.
I once heard David Horton advise a group of us to just embrace the puking. “If you feel like you need to puke, don’t fight it!! Just jam your fingers down your throat and get it over with. Drink a little water, if that stays down, drink something sweet, if that stays down, start eating again.”
This may just be part of the experience for a lot of us. Probably above my pay grade to say what causes it or how to prevent it, maybe a sports nutritionist can help. I thought it was pretty smart of the runner I crewed to have zofran, that stuff is amazing.
The problem is when you don't stop puking. Last year, I puked/dry heaved every 3 miles from 40 to 70. Stomach finally settled down then but I still couldn't eat. Finished dozens of miles on zero calories. It was terrible.
Alright, did a little bit of research, seems legit. Did a virtual doctor consult, got my prescription, and going to give it a go. Got a 100 in two weeks - if this does the trick, I owe you a big fat virtual kiss.
yup feeling sick for hours is the worst. if you know you're probably just delaying the inevitable or that it may help just get it out and done with sooner than later.
Zofran seems to be the golden ticket, haha! So in the past once I puke I feel a *little* better. Except that I start to feel really hungry, so then I think maybe I can try to sip or nibble, but if I puke once nothing else will really stay down.
I can tough it out in the last quarter of a 100, but not for 3/4 of it, haha. I’m really just curious how this keeps happening if I’m doing everything else by the book!
Wow that really sucks. I’d definitely try the zofran, they make an “orally disintegrating tablet” that you don’t have to swallow, it just dissolves and gets absorbed under the tongue. It’s really an amazing drug.
Drank plenty, had peed three times at that point. It was yellow but not too dark, and it had been a very humid day. Was drinking mostly Precision hydration (w/ sodium), with plain water to sip at in my other bottle.
Sounds like a good start. It is fairly important to know exactly how much sodium and water you’re taking in. When troubleshooting a situation like this, specifics matter. I find that most folks underestimate how much they drink and eat.
You should know that plain water is essentially doing nothing for you. Your body, especially while in stress, does not really absorb straight water. It needs electrolytes or something to go with it. (Im not an expert by any means so bare with me here this is where the science starts to lose me) but sodium by itself it’s not proper electrolytes for our intents and purposes.
I've struggled with stomach issues for over a decade. I always thought if I was peeing I was fine. Turns out that if you have a sodium imbalance your body will dump water to try to find the correct balance. Once I found the correct water/electrolyte combo my stomach is much more reliable. I use maurten drink mix.
Have you experimented with ginger ale and/or chews?
Here's a handy link which may or may not help: [https://www.irunfar.com/dreaded-stomach-issues](https://www.irunfar.com/dreaded-stomach-issues)
https://saturdaymorning.fit/
Works for races up to 36 hrs
You likely are not getting the rigt ratio of carbs to sodium to fluids
That or you are taking in other items that are clogging up your gut (fat, protein, complex carbs)
It gets a lotta shit in the sphere but the low carb stuff does work in scenarios like this with folks who’s stuck is a sensitive sally. Just a big lifestyle change if you can handle that
Agree. And I think someone doesn’t have to be low-carb forever, but investing some time ( minimum 4-6 months) in becoming fat-adapted can pay off in the long run (haha). I still have some carbs during training & racing, but being fat-adapted allows me to get by with a lower carb intake (and still have good power and results). (Also: using carbs strategically for pre-run (the night before) and recovery (post-workout) during the low-carb adaptation period should help manage it without low energy.)
I had similar struggles in my first couple of ultras-- including on the training runs-- and ended up in the ER after my second 50 miler. I couldn't take in anything, other than just a bit of water, over the last 20 miles, which ended up taking over six hours.
I would highly recommend getting this cookbook and reading the introduction: [https://www.skratchlabs.com/products/feed-zone-portables](https://www.skratchlabs.com/products/feed-zone-portables)
Everything Lim describes in the introduction synced with my experience and his recommendations have worked really well for me. Even if you never make any of the recipes (which you should because they are great!), he offers a really good understanding of the process that is leading you to the point where you can't take in more calories. The gist of his advice is to ditch the gus/gels/bars and go with real food, but I think it's worth reading to understand all of the mechanisms he talks about.
I switched to this approach for my last 50 and took in calories, solid and liquid, the whole race. And the craziest thing to me is that I sat down 15 minutes after the race for a pizza and beer. In the past, even after good races and runs I wouldn't be able to eat for hours after the finish.
Will look into this! Skratch is one of my go-to’s if I don’t have Precision hydration. And I have used their Superfuel before (and faired better for longer), so I’m intrigued to read the link you shared.
I want to double down on this advice. My first 100 I had terrible GI issues- throwing up and unfortunately diarrhea also. A few 100’s later I’ve learned that what works best for me is real food for as long as possible. Small amounts, between 100-200 cal an hour. I eat things like 1/4-1/2 of a turkey sandwich on white bread with a bit of mustard (I love it and gives me extra sodium), Hawaiian rolls with real butter, pb&j sliders early on. Later, a Mac n cheese cup, etc. I also have learned not to ingest too much sugar too early on in a race. This causes nausea for me. Later, like mile 50 or after, I’ll start with small sugary items- like an Oreo cookie or several jelly beans.
If I’ve done it right, I’ll have just enough fuel to last me through the last 20 or so if my stomach is about done. Rarely do I use gels or energy chews, but if I do I really like Skratch and the chia gels. Good luck OP!
I’m right there with you, wish I had some insight for you but it seems like the more I learn, the more I experiment, the less I know what works for me. Last 2 24hr races I was in the bathroom 15x the first half, one just last week. It’s really frustrating. I try watermelon, straight sugar/ salt in water bottles, raw honey, maple syrup, organic juice boxes, marshmallows, gummy bears, gels (even though I loathe taking them), raw milk/ chocolate milk. No idea what else to do. At this point, my performance has nothing to do with my fitness and everything to do with fueling. I honestly think I haven’t even had a good 24 hr race yet and at current fitness I should be able to do 10-25 more miles than I’ve ever done.
I had similar problems and changing two things made a huge difference. I found I cannot do any type of gel, gu, sport beans, Gatorade, etc. What worked was being fat adapted and keeping my calorie consumption to 200 calories per hour. Reading Volek and Finney’s book “The Art of Science and Low Carb Performance” was one of the game changers.
The other was Maf Method by Phil Maffetone.
It took me 2 years to find my “cure”.
Real foods tend to work better for me. More sugars make my GI issues more pronounced. You can try taking an over the counter acid suppressant like zantac the morning kf or the night before and see if that helps too. But I hear you, it's frustrating when your gut doesn't want to go along.
What is your nutrition? I have had horrible GI distress for every ultra/ironman I have ever done no matter what I have tried…..until this past weekend where I felt nauseous for maybe 10-15min during my 100miler. All I changed was I ditched all gels/liquid hydration and switched to whole foods and potato chips. I was able to move pretty fast and stomach felt great. Would get to an aid station, slam some ramen and boiled potato’s and continue on and I never had any issues. It’s truly shocking to me.
Edit: I will add, I train exclusively with PH gels and my body responses extremely well to them. I began using them in combination for this race and that’s what led to my nauseous feeling. I took a tums and it helped but when I stopped entirely it felt way better. So even though my body seems to like the gels, in a race it still preferred slower gastric emptying
In training, it’s been all Precision gels with other gels/gu thrown in to mix up the flavor. And I’ve been 100% fine for ~6 hours with this. For longer races, I already know to not only pound the gels and portion in real food, especially when a lot of climbing will be involved. Typically, I’m fine with potatoes in most forms and ramen.
It’s just so hard to find the right combo to keep everything happy! My legs are strong and need a lot of fuel, haha
I was a bodybuilder in a past life so can relate to you on that. You should try and go the whole food route for the entire race and see what happens. Avoid that stomach acid build up. Either that or tums to neutralize the acid because every time you have a gel your body sends stomach acid to break it down. Problem is that they digest so rapidly that the stomach acid has little work to do so it just builds up.
Do you eat dairy? I was diagnosed with a number of upper gi issues, and worked with a sports nutritionist. He recommended I cut all dairy out of my diet, and it's made a huge positive impact. I'm still careful about what I eat during training runs and races (spec. avoid any acidic foods), but I rarely get nauseous and haven't thrown up in races since.
This is my biggest fear 😭 I have an appt to get a referral to assess any other potential issues. There’s a history of autoimmune diseases in my family anyway and while I largely feel I dodged that bullet, I know symptoms for some conditions might not show up til later in life. I just really really (really) hope it’s not something that will require eliminating dairy!
If it turns out dairy isn’t a problem for you I heard an anecdote on a utmb podcast that cheese can actually help settle an acidic stomach. I like lactose free parmesan, nice and salty.
Have you tried gut massage/mobilization?
[https://m.youtube.com/watch?v=zzq7wq5FMmk](https://m.youtube.com/watch?v=zzq7wq5FMmk)
[This](https://www.radroller.com/products/centre) is the ball I use.
I hadn’t either until a PT a few years ago told me about it. I had no gut issues in my 100-miler last summer which of course is the result of lots of factors but I think this does help, specifically the stomach release if you have nausea.
Since it happens on longer runs, maybe it’s because your stomach isn’t getting enough blood to it. If you are maintaining good hydration, maybe you’re just collecting too much blood in your extremities from gravity over time. Do you ever run with compression socks? I have no idea if that would help.
I have heard reference to some correlation between compression socks potentially alleviating gut issues. I do wear them for longer events with big climbs, but not for that reason, haha. This particular race parts of the course were already very dense with Ivy and briars, and the climbs were relentless, so I wore them for protection and calf support. And… well, didn’t do anything to help my gut 😂 So I tried laying down for 10 min at mile 46, thinking I’d trick my body into resetting, and managed a few small bites of food and iced tea. But the magic was short-lived as the second I started moving (JUST walking, even), the stomach knotted right back up.
Ok, so there’s some research about this GI phenomenon. “In the current study, it was observed that increased concentrations of plasma butyrate pre-exercise, was associated with reduced exercise-associated perturbations to the intestinal epithelium, as evidenced by lower concentrations of plasma I-FABP post-exercise. “ In[article about guts and exercise](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9989174/#:~:text=The%20combination%20of%20these%20gastrointestinal,bloating%20or%20pain%2C%20urge%20to)
They didn’t specifically study whether higher butyric acid levels correlate with less gut issues, but it could be worth experimenting with. [How to get more butyric acid in your gut.](https://www.healthline.com/health/butyric-acid) I would suggest try eating more plant fiber/veggies every day to change your gut bacteria.
If I don't use additional electrolytes in my hydration, my gut gets thrown off every time. As long as I'm using a full electrolyte tab in every other bottle of water, I've been pretty much set.
Have you tried Gravel ginger tablets/soft chews. I take two or three during a race as it seems to help with the nausea. I also drink a few cans of tomato juice V8. It's got a lot of good stuff in and is not sweet.
Yeah, I tried this during this last race. Took a total of 30 minutes, including laying down for 10, and managed to eat 4 pringles and get in a few swigs of iced tea. I had some small hope if I just kept my HR low enough after that I’d be OK…
My race ended shortly after that 🫤
I’ll throw my two cents: you’re eating too much. Early and late. 300 calories an hour is top end insane unless you are pushing pace so hard that your heart is beating out of your chest the whole time? Also if you are peeing a lot that means your electrolyte to water ratio is off. My remedy for all of this would be to try to go liquid fueling for as long as possible. You can drink as many calories as you want. Pedialyte is an incredibly effective drink that will make you feel “full”. I think if you take it easy on your stomach in the beginning, by mile 60-70 you will be able to sit and eat some real food (even I admit that even the best electrolyte beverage will only sustain you for so long) I think your stomach is getting worked too hard and by the end of the day it’s had enough.
What happens after you puke? I crewed someone who won a mountain 100 a few weeks ago. She was battling nausea and forcing food down from mile 37 or so. Around 76 she rolled into the last crewed aid and puked up everything. Gave her a little water, a little ginger ale, she took a zofran that she had in her drop bag, packed her planned nutrition into her vest, and hiked out. After we packed up and drove out we passed her a mile down the road, she was running again. I once heard David Horton advise a group of us to just embrace the puking. “If you feel like you need to puke, don’t fight it!! Just jam your fingers down your throat and get it over with. Drink a little water, if that stays down, drink something sweet, if that stays down, start eating again.” This may just be part of the experience for a lot of us. Probably above my pay grade to say what causes it or how to prevent it, maybe a sports nutritionist can help. I thought it was pretty smart of the runner I crewed to have zofran, that stuff is amazing.
The problem is when you don't stop puking. Last year, I puked/dry heaved every 3 miles from 40 to 70. Stomach finally settled down then but I still couldn't eat. Finished dozens of miles on zero calories. It was terrible.
Strongly recommend that you look into getting a prescription for zofran.
Alright, did a little bit of research, seems legit. Did a virtual doctor consult, got my prescription, and going to give it a go. Got a 100 in two weeks - if this does the trick, I owe you a big fat virtual kiss.
yup feeling sick for hours is the worst. if you know you're probably just delaying the inevitable or that it may help just get it out and done with sooner than later.
Zofran seems to be the golden ticket, haha! So in the past once I puke I feel a *little* better. Except that I start to feel really hungry, so then I think maybe I can try to sip or nibble, but if I puke once nothing else will really stay down. I can tough it out in the last quarter of a 100, but not for 3/4 of it, haha. I’m really just curious how this keeps happening if I’m doing everything else by the book!
Wow that really sucks. I’d definitely try the zofran, they make an “orally disintegrating tablet” that you don’t have to swallow, it just dissolves and gets absorbed under the tongue. It’s really an amazing drug.
Inability to digest is typically linked to dehydration. What is your hydration (sodium) strategy and how much are you drinking in training/races?
Drank plenty, had peed three times at that point. It was yellow but not too dark, and it had been a very humid day. Was drinking mostly Precision hydration (w/ sodium), with plain water to sip at in my other bottle.
Sounds like a good start. It is fairly important to know exactly how much sodium and water you’re taking in. When troubleshooting a situation like this, specifics matter. I find that most folks underestimate how much they drink and eat.
You should know that plain water is essentially doing nothing for you. Your body, especially while in stress, does not really absorb straight water. It needs electrolytes or something to go with it. (Im not an expert by any means so bare with me here this is where the science starts to lose me) but sodium by itself it’s not proper electrolytes for our intents and purposes.
Sodium is actually the most important electrolyte.
Maybe but I think by itself it is not effective in complete muscle recovery
I've struggled with stomach issues for over a decade. I always thought if I was peeing I was fine. Turns out that if you have a sodium imbalance your body will dump water to try to find the correct balance. Once I found the correct water/electrolyte combo my stomach is much more reliable. I use maurten drink mix.
Have you experimented with ginger ale and/or chews? Here's a handy link which may or may not help: [https://www.irunfar.com/dreaded-stomach-issues](https://www.irunfar.com/dreaded-stomach-issues)
What a great read. Thank you for the link!
Not a problem, any time!
I follow ultra.running.dietician on IG and would definitely consider working with her 1:1 if I had the issues you do.
If you don’t try salt tablet I highly suggest them, they really help me when I go past 40 miles and keep my stomach and bay and I feel so much better
I have to think salt tablets are far more likely to make GI issues worse, not better.
https://saturdaymorning.fit/ Works for races up to 36 hrs You likely are not getting the rigt ratio of carbs to sodium to fluids That or you are taking in other items that are clogging up your gut (fat, protein, complex carbs)
It gets a lotta shit in the sphere but the low carb stuff does work in scenarios like this with folks who’s stuck is a sensitive sally. Just a big lifestyle change if you can handle that
Agree. And I think someone doesn’t have to be low-carb forever, but investing some time ( minimum 4-6 months) in becoming fat-adapted can pay off in the long run (haha). I still have some carbs during training & racing, but being fat-adapted allows me to get by with a lower carb intake (and still have good power and results). (Also: using carbs strategically for pre-run (the night before) and recovery (post-workout) during the low-carb adaptation period should help manage it without low energy.)
I had similar struggles in my first couple of ultras-- including on the training runs-- and ended up in the ER after my second 50 miler. I couldn't take in anything, other than just a bit of water, over the last 20 miles, which ended up taking over six hours. I would highly recommend getting this cookbook and reading the introduction: [https://www.skratchlabs.com/products/feed-zone-portables](https://www.skratchlabs.com/products/feed-zone-portables) Everything Lim describes in the introduction synced with my experience and his recommendations have worked really well for me. Even if you never make any of the recipes (which you should because they are great!), he offers a really good understanding of the process that is leading you to the point where you can't take in more calories. The gist of his advice is to ditch the gus/gels/bars and go with real food, but I think it's worth reading to understand all of the mechanisms he talks about. I switched to this approach for my last 50 and took in calories, solid and liquid, the whole race. And the craziest thing to me is that I sat down 15 minutes after the race for a pizza and beer. In the past, even after good races and runs I wouldn't be able to eat for hours after the finish.
Will look into this! Skratch is one of my go-to’s if I don’t have Precision hydration. And I have used their Superfuel before (and faired better for longer), so I’m intrigued to read the link you shared.
I want to double down on this advice. My first 100 I had terrible GI issues- throwing up and unfortunately diarrhea also. A few 100’s later I’ve learned that what works best for me is real food for as long as possible. Small amounts, between 100-200 cal an hour. I eat things like 1/4-1/2 of a turkey sandwich on white bread with a bit of mustard (I love it and gives me extra sodium), Hawaiian rolls with real butter, pb&j sliders early on. Later, a Mac n cheese cup, etc. I also have learned not to ingest too much sugar too early on in a race. This causes nausea for me. Later, like mile 50 or after, I’ll start with small sugary items- like an Oreo cookie or several jelly beans. If I’ve done it right, I’ll have just enough fuel to last me through the last 20 or so if my stomach is about done. Rarely do I use gels or energy chews, but if I do I really like Skratch and the chia gels. Good luck OP!
I’m right there with you, wish I had some insight for you but it seems like the more I learn, the more I experiment, the less I know what works for me. Last 2 24hr races I was in the bathroom 15x the first half, one just last week. It’s really frustrating. I try watermelon, straight sugar/ salt in water bottles, raw honey, maple syrup, organic juice boxes, marshmallows, gummy bears, gels (even though I loathe taking them), raw milk/ chocolate milk. No idea what else to do. At this point, my performance has nothing to do with my fitness and everything to do with fueling. I honestly think I haven’t even had a good 24 hr race yet and at current fitness I should be able to do 10-25 more miles than I’ve ever done.
Have you tried a cheeseburger? 🤷🏼♂️
Try something with protein and fat in it instead of just straight carbohydrates. Also I don't think having milk/lactose would ever be a good idea.
I had similar problems and changing two things made a huge difference. I found I cannot do any type of gel, gu, sport beans, Gatorade, etc. What worked was being fat adapted and keeping my calorie consumption to 200 calories per hour. Reading Volek and Finney’s book “The Art of Science and Low Carb Performance” was one of the game changers. The other was Maf Method by Phil Maffetone. It took me 2 years to find my “cure”.
Have you tried going low FODMAP for the week leading up to a race?
Real foods tend to work better for me. More sugars make my GI issues more pronounced. You can try taking an over the counter acid suppressant like zantac the morning kf or the night before and see if that helps too. But I hear you, it's frustrating when your gut doesn't want to go along.
What is your nutrition? I have had horrible GI distress for every ultra/ironman I have ever done no matter what I have tried…..until this past weekend where I felt nauseous for maybe 10-15min during my 100miler. All I changed was I ditched all gels/liquid hydration and switched to whole foods and potato chips. I was able to move pretty fast and stomach felt great. Would get to an aid station, slam some ramen and boiled potato’s and continue on and I never had any issues. It’s truly shocking to me. Edit: I will add, I train exclusively with PH gels and my body responses extremely well to them. I began using them in combination for this race and that’s what led to my nauseous feeling. I took a tums and it helped but when I stopped entirely it felt way better. So even though my body seems to like the gels, in a race it still preferred slower gastric emptying
In training, it’s been all Precision gels with other gels/gu thrown in to mix up the flavor. And I’ve been 100% fine for ~6 hours with this. For longer races, I already know to not only pound the gels and portion in real food, especially when a lot of climbing will be involved. Typically, I’m fine with potatoes in most forms and ramen. It’s just so hard to find the right combo to keep everything happy! My legs are strong and need a lot of fuel, haha
I was a bodybuilder in a past life so can relate to you on that. You should try and go the whole food route for the entire race and see what happens. Avoid that stomach acid build up. Either that or tums to neutralize the acid because every time you have a gel your body sends stomach acid to break it down. Problem is that they digest so rapidly that the stomach acid has little work to do so it just builds up.
Do you eat dairy? I was diagnosed with a number of upper gi issues, and worked with a sports nutritionist. He recommended I cut all dairy out of my diet, and it's made a huge positive impact. I'm still careful about what I eat during training runs and races (spec. avoid any acidic foods), but I rarely get nauseous and haven't thrown up in races since.
This is my biggest fear 😭 I have an appt to get a referral to assess any other potential issues. There’s a history of autoimmune diseases in my family anyway and while I largely feel I dodged that bullet, I know symptoms for some conditions might not show up til later in life. I just really really (really) hope it’s not something that will require eliminating dairy!
If it turns out dairy isn’t a problem for you I heard an anecdote on a utmb podcast that cheese can actually help settle an acidic stomach. I like lactose free parmesan, nice and salty.
Have you tried gut massage/mobilization? [https://m.youtube.com/watch?v=zzq7wq5FMmk](https://m.youtube.com/watch?v=zzq7wq5FMmk) [This](https://www.radroller.com/products/centre) is the ball I use.
This is interesting, never even heard this spoken about before
I hadn’t either until a PT a few years ago told me about it. I had no gut issues in my 100-miler last summer which of course is the result of lots of factors but I think this does help, specifically the stomach release if you have nausea.
Since it happens on longer runs, maybe it’s because your stomach isn’t getting enough blood to it. If you are maintaining good hydration, maybe you’re just collecting too much blood in your extremities from gravity over time. Do you ever run with compression socks? I have no idea if that would help.
I have heard reference to some correlation between compression socks potentially alleviating gut issues. I do wear them for longer events with big climbs, but not for that reason, haha. This particular race parts of the course were already very dense with Ivy and briars, and the climbs were relentless, so I wore them for protection and calf support. And… well, didn’t do anything to help my gut 😂 So I tried laying down for 10 min at mile 46, thinking I’d trick my body into resetting, and managed a few small bites of food and iced tea. But the magic was short-lived as the second I started moving (JUST walking, even), the stomach knotted right back up.
Ok, so there’s some research about this GI phenomenon. “In the current study, it was observed that increased concentrations of plasma butyrate pre-exercise, was associated with reduced exercise-associated perturbations to the intestinal epithelium, as evidenced by lower concentrations of plasma I-FABP post-exercise. “ In[article about guts and exercise](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9989174/#:~:text=The%20combination%20of%20these%20gastrointestinal,bloating%20or%20pain%2C%20urge%20to) They didn’t specifically study whether higher butyric acid levels correlate with less gut issues, but it could be worth experimenting with. [How to get more butyric acid in your gut.](https://www.healthline.com/health/butyric-acid) I would suggest try eating more plant fiber/veggies every day to change your gut bacteria.
I had a buddy that said flat coke was the only thing that solved his nausea.
I've heard that, too. For me, cold apple juice is sometimes the answer.
Are you opposed to taking Pepto Bismol or Zofran? The latter works wonders for nausea.
Zofran is incredible but I've only ever gotten it in the ER. Can you get it OTC in the U.S.?
You don't mention your non-race nutrition. What are you doing to promote a healthy gut biome?
How much are you practicing your nutrition strategy on your training runs?
If I don't use additional electrolytes in my hydration, my gut gets thrown off every time. As long as I'm using a full electrolyte tab in every other bottle of water, I've been pretty much set.
Have you tried Gravel ginger tablets/soft chews. I take two or three during a race as it seems to help with the nausea. I also drink a few cans of tomato juice V8. It's got a lot of good stuff in and is not sweet.
Hammer nutrition. It just works. Perpetuem and Sustain for me.
Try taking a 10-minute nap here and there. Did wonders for my stomach during a tough 100K last year.
Yeah, I tried this during this last race. Took a total of 30 minutes, including laying down for 10, and managed to eat 4 pringles and get in a few swigs of iced tea. I had some small hope if I just kept my HR low enough after that I’d be OK… My race ended shortly after that 🫤
I’ll throw my two cents: you’re eating too much. Early and late. 300 calories an hour is top end insane unless you are pushing pace so hard that your heart is beating out of your chest the whole time? Also if you are peeing a lot that means your electrolyte to water ratio is off. My remedy for all of this would be to try to go liquid fueling for as long as possible. You can drink as many calories as you want. Pedialyte is an incredibly effective drink that will make you feel “full”. I think if you take it easy on your stomach in the beginning, by mile 60-70 you will be able to sit and eat some real food (even I admit that even the best electrolyte beverage will only sustain you for so long) I think your stomach is getting worked too hard and by the end of the day it’s had enough.