I've been training on PB+J and corn muffins, water and cytomax. I can't really tolerate and of the gu, gels, or bars... they run right through me... the problem you ask?? I am STARVING 3 hours into a long run, and since I think I will be out there for 16+ hours, I need some suggestions. Last long run to practice with food is this Sunday. HELP!!! BTW, dairy is not an option. Thanks!!