I was concerned about 'bonking' on the 100 mile ride. It seems that I have never been able to get my fluid intake and energy (food) intake correct on these rides. After doing a lot of research, I found a helpful book on 'ultra-cycling' that made some great suggestions for during ride food. I tried some of these suggestions out and I never had a problem! The only thing that was tough was forcing myself to eat every hour I was one the bike.