Tour de Whatcom is a charity ride with 20, 50 and 100 mile routes. Last year I saw kids and seniors, Xtracycles, and tandems on the 20mi route.

http://www.tourdewhatcom.com/

I’m looking forward to trying the 50 mi route on my recumbent in 2011. This should be easy compared to the STP on July 9-10.