According to Nancy Clark, RD, MS, and author of the Food Guide for Marathoners, these 7 foods may help a runner's endurance and recovery. For the whole article go here.
Top 7 Foods for Runners:
1) Small Bagel with Peanut Butter
2) Bananas
3) Berries
4) Broccoli
5) Yogurt
6) Lean Beaf or Beans, Peas, Cereal for Vegetarians
7) Wild Salmon
A banana with a little peanut butter is awesome. Its easy to digest, keeps you full, and it sustains energy levels.