I am 63 years old and ride a lot. Probably too much and a bit tire more than I should. That said I could not imagine today riding a 5 hour century. I have only ever done them solo. Back 10 years ago I did manage one in 19 mph did it in 5:20 minutes no real stops. It was basically pretty flat course here in Illinois. Now I was thinking that wow in 10 years and no I could not imagine going 5 hours for a Century. I am in reasonable shape old marathon runner, I lack real bike handling skills but otherwise pretty steady.

So, my question for this group is if anyone here can ride a 5 hour century. at least near my age. My guess is that there actually will quite a few. My only thing was all mine solo and I am not group rider. If I road with a group but not a paceline, but just others around could I expect more than I think. Right now maybe on a good day with lots of rest before the ride I could go 17.5.