The same event I took part last year in 100km category but this time around I ran 52 km only. Those in 52 km & 78 km categories started at nite with 15 hours cut-off. Those in 100 miles and 100 km started in the morning with 32 hours cut-off. I did about 10 hours in this race. Not really the distance but the night time made me very sleepy.