You shouldn't worry about your age. A local woman that I frequently ride with is older than I am and she doesn't think she's at the same fitness level I am either. I've had to stop for her a couple of times, but we have so much fun that it's totally worth it. We usually end up in a fit of giggles over some silly thing. Our rides are meant to be fun and casual.

We actually met via Twitter through some mutual tweeps.