Bicycle trails run along the Northeast Branch of the Anacostia River (the big blue stripe visible on the "Map of Riverdale Park"). These trails go north to Berwyn (ending at Lake Artemesia) and south further than we've ever gone! These trails are maintained by the Maryland National Capital Parks & Planning Commission, which has a web site at http://www.mncppc.org/. Information on the Hike/Bike/Equestrian trails is at http://www.pgparks.com/places/parks/parks.anacos.html. The map showing the trail through Riverdale Park (the Northeast Branch Trail) is at http://www.pgparks.com/places/place_images/anacostia.big.gif.