[bcuzracecarz]

Yea I'd definitely stay away from pre workout or caffeine, the idea of it sounds great, but in reality it sucks for distance running. Another consideration is if you take it say 10 mins before the "race starts", you'll be amped up for a walk because unless you're near the front it can take you up to 15-20 mins just to cross the start line, and you'll be avoiding a lot of people before you really get going