Johan Barelds 💯 on Nostr: Clear, thanks. I was trying something similar just as an exercise but since there are ...

Clear, thanks.
I was trying something similar just as an exercise but since there are not much public plans for an 80km ultra I got a bit stuck in for example what longest long run to aim for.
Long time ago I heard a rule of thumb stating that 2/3 of the race distance should be the longest long run in your training plan. So that would make approx 30km in case of a marathon.