Just to give you a comparison for fuel intake. Sunday's ride was 60 miles, 2,500 ft of climbing, windy (strong enough to make the flags whip and snap straight out) and I'm 135 lbs.

Breakfast -
Medium size bowl of hot multi-grain cereal with butter and brown sugar
Iced latte during 20 min drive to start

On ride -
A bit more than 2 bottles Cytomax
About 1.5 bottle water (so close to 4 bottles of liquid total)
3 servings HammerGel - nanner flavor (thanks, MP, the flask worked great)

This is the absolute max effort I would do without some kind of solid food like a PayDay or a Mojo Bar. I would have eaten more on the ride but I rode to a restaurant at the end so I knew I didn't have to fuel up too much.