Early AM ride starts off with a 16 oz cup of water, a banana, a ˝slice of bread. If I am going further than 36 miles, I eat a breakfast bar while on the ride. If I'm going to be doing 60~70 miles, I have a second one during the ride(first one around the 20 mile mark and the second one around the 40 mile mark for a metric 100K). This seems to work for me...YMMV.