I did IMLP this year & recorded an usually low ave. heart rate during 1st half of run. It was about 10-20 bpm lower than ave. rate during training runs. I then bonked around mile 15 & had to walk most of 2nd half of run. I’ve been told low rate could be from too much hydration and/or too few calories taken in on the bike. Anyone have any ideas about this. I want to avoid whatever happened next time around.
Low HR?
Bonk on run?
I’m going to say you needed more calories.
jaretj
Sounds like you got tired. Don’t overthink it.