Every runner has a horror story to tell about the time they bonked midway through the big race. They're flying comfortably along the course and suddenly things take a turn for the worse -- all motivation to finish flies out the window and their legs feel as though lead weights are attached to them. While it may seem like common sense to the seasoned runner, more novice runners may not be well versed on what to eat before a 5K or a marathon. By eating a diet that is optimized for runners, you can can successfully avoid injury and finish strong on race day. Try these meal planning tips and example meal plan!