My normal breakfast, but maybe a larger quantity as a pre-ride breakfast, than it would be if I wasn't going to ride or run until the evening.

Hot or cold cereal, a handful of raw nuts or a dollop of peanut butter, fresh or dried fruit.

I need to replace calories on any ride longer than about an hour and a half. I put HEED in my bottles. If it goes over around five hours, I'll need some protein, too. What goes down best for me is a tuna salad or egg salad sandwich. (I was surprised, too, how well it worked for me, the first time. )