Next weekend I'm doing the Narragansett Wheelmen's Flattest Century in the East ride (did it last year, took about 7 hours).
This year NBBW and my biking buddy's 14 yr-old son is joining us, so will be interesting how that plays out (i.e. will Frank slow down??).
The trick on these long rides is that you have to be constantly replenishing yourself with fluids, foods, salt, etc. But it's not a race, it's a ride (keep repeating that, boyo).
I remember last year how surprised I was at the first food stop as to how these guys were jamming food into their mouths (peanut butter samwiches, bananas, bagels, etc.) but soon found myself doing the same at the trough. You really need the caloric intake to maintain a good pace for that long.
After a lot of work on Powerpoint/Excel presentations at work two weeks ago, both arms are dying from Carpal tunnel'ish misery. The training bike rides have been tough while nursing that injury. Hopefully the inflammation has died down by next week. If not - Ibuprofen will be in the saddle with me.