In the 24 hour races I have done, I have been 74 - 81 miles at 12 hours. Only twice was I able to convert that into a good race (147 / 154) out of 8 tries.
Trail Monster
I'm so much slower than most of you but for me the hours of twilight and just before dawn were the hardest. All day and all through the middle of the night I was okay but from 8 or 9PM until 10 or 11PM and then from 3 or 4AM until 6AM or so I was just wrecked.
2013 races:
3/17 Shamrock Marathon
4/20 North Coast 24 Hour
7/27 Burning RIver 100M
8/24 Baker 50M
10/5 Oil Creek (distance to be determined)
My Blog
Brands I Heart:
FitFluential
INKnBURN
Altra Zero Drop