Monument to Monument ( blatant cut and paste job )
Found this on Bike Forums in the Maryland People thread. I am not involved in the organization in any way, just thought it might look appealing to the denizens of the WABA forum
Not that I'll even be in town that day (May 6th, for those who didn't click through), but it sounds like fun. Sounds like it'd be even more fun to join that ride for the DC-Baltimore portion, then have an early dinner/snack, and bike back to DC.