Thanks!

It's a completely different sport.

Last seven kilometers were all down as you can see on the altitude graph. This was actually the most demanding part of the trip. The first down part is also long as Monday, over 13 kilometers. It goes on and on for eternity :)

The main issue here, when you ask me, besides the distance, steep climbs and heat, is that you don't use your muscles in a constant way. Try running down fast after you've snail-paced up for last three hours :)

Real trail ultramarathoners train the down sections the most.