I don't eat solids during a half mary because my stomach has problems with food while running, but I usually take a few
sips of water every mile once I'm past the 5 mile mark. More sips if it is particularly hot and humid (I run in Florida).
During races I alternate sips of water with sips of a sports drink at every water stop (past the 5 mile mark). And I had my best long run ever fueled by an exorbitant amount of dark chocolate in the morning before I ran.
The key is for you to experiment during your training to see what makes you feel best (that way you'll know exactly what you want to do during a race). Different people like different fuels: candy, pretzels, gels, power bars, etc. As your runs get longer you'll start judging how to best fuel up before, during, and after. Don't be afraid to experiment, it is a voyage of self-discovery and part of the fun!
