LOCAL RUNNING
Maryland
Race Resources
Montgomery County Road Runners
Maryland RRCA
Annapolis Striders
Frederick Steeplechasers
Maryland Running
Howard County Striders
Baltimore Road Runners Club
Prince Georges Running Club
Southern Maryland Running
Westminster Road Runners Club
Queen City Striders
(Cumberland)
Metro Harriers
(Track/Cross-Country)
RASAC
(Bel Air)
NCR Trail Snails
Washington, DC
DC Road Runners
Washington Running Club
Potomac Runners
DC Hash House Harriers
Virginia
Fredericksburg Area Running Club (VA)
Reston Runners
Prince William (VA) Running Club
Virginia Happy Trails Running Club
Shenandoah Valley Runners
Northern Virginia Running Club
Loudoun Road Runners
Potomac Valley Track Club
Quantico Orienteering Club
And there is more...
Dead Runners Society - Mid-Atlantic
Running Around Town: Washington, DC and area
Washington Running Report
DC Area Trail Guide
iPlayOutside
(multisport)
MetroSports Magazine
50 Plus Club
Racepacket
Runner's Gazette - (Mid-Atlantic)