Seneca Ridge connects Gaithersburg to the Schaeffer Fram trail system. The track says it all. Twisty rolling terrain. Great Flow. I only had time for a quick out and back, next time I'll include the Schaeffer Farm trails for four hours of singletrack bliss in the middle of the DC suburbs.
"You have brains in your head. You have feet in your shoes. You can steer yourself any direction you choose ."
-- Dr Seuss