Don't know what your are looking for relative to distance, time, altitude gain or temperature, so FWIW, I generally bring 4-8 packets of Perpetum (4-8 bottles extra, depending on heat), 4-6 GU's, 4-5 Stingers and a couple of GU Chomps for a 5-6 hr ride. Distance is 50-60+ and 8-10K climbing. I eat a high protein breakfast before I leave. I am 66 and love to ride in the foothills.