4 years ago i did the ozark 100 miler thought i was hydrated good got a good start was in the top 3 in my class buy the 35 mile mark and my body started breaking down i had burned so much energy standing up and sitting down runing race pace that i started having bad leg spazms witch ended my day early. pace your self in the race eat lots of pasta the day before and the day off use lots of salt to retain water the week before just my 2cents the video is last years 100miler
http://youtu.be/0_iKYTUDsWo