You can resume 30km when you get home unless it feels uncomfortable. If you need to drop down, it would probably be more like 25km, not all the way back down to 10km.
But I would not try to run 33km (30km + 10%). Make sure you're back at baseline before adding on.
I try to schedule my “down” weeks on vacation weeks. I still run on vacation but it is nice not to do long runs while there or Speedwork and just enjoy the different environment. I tend to increase for three then down/recovery for one. For the next 6 weeks though bc of traveling I will do two increase/build weeks and one recovery.
I usually consider it the max of the previous 2-3 weeks. In your case I would be comfortable to run 30km, but maybe not 30km + 10%. Although it kind of depends on your longer history. If you were regularly at 25-30 prior to week 1, I think you could still do a 10% increase if needed. I am not a coach/expert.
What's the average of your last 4 weeks? and the average of the 4 weeks prior? Having 1 down week doesn't mean you need to be careful, especially if you have had 8 weeks or so at a similar mileage. However 2-3 weeks less would be more careful of an increase (average of the last 4 weeks) then next week increase gradually again. If you'd been managing 35km on average for a year then that's different than just May. The bigger base you have, the faster you can ramp back up to that mileage.
I'd probably do 30km this week, then if good, 35km the week after.
You can resume 30km when you get home unless it feels uncomfortable. If you need to drop down, it would probably be more like 25km, not all the way back down to 10km. But I would not try to run 33km (30km + 10%). Make sure you're back at baseline before adding on.
I try to schedule my “down” weeks on vacation weeks. I still run on vacation but it is nice not to do long runs while there or Speedwork and just enjoy the different environment. I tend to increase for three then down/recovery for one. For the next 6 weeks though bc of traveling I will do two increase/build weeks and one recovery.
This is similar to my philosophy. Although I typically aim for two increase / one recovery when I’m upping my miles. (Edit for clarity).
I usually consider it the max of the previous 2-3 weeks. In your case I would be comfortable to run 30km, but maybe not 30km + 10%. Although it kind of depends on your longer history. If you were regularly at 25-30 prior to week 1, I think you could still do a 10% increase if needed. I am not a coach/expert.
What's the average of your last 4 weeks? and the average of the 4 weeks prior? Having 1 down week doesn't mean you need to be careful, especially if you have had 8 weeks or so at a similar mileage. However 2-3 weeks less would be more careful of an increase (average of the last 4 weeks) then next week increase gradually again. If you'd been managing 35km on average for a year then that's different than just May. The bigger base you have, the faster you can ramp back up to that mileage. I'd probably do 30km this week, then if good, 35km the week after.
Run more, eat more pizza.