i like trail mixes made of nuts and dried berries. works for me on long hikes. i don't need to eat while i'm running so far. i've run for an hour and a half and i feel fine. afterwards, i try to eat within the half hour. we'll see what happens when i hit the 2 hour mark. if you are LC, you should be a fat burner and won't need to eat nearly as much as someone getting their energy from carbs.