Arrow Bicycle
Hyattsville, MD

Better Bikes Inc.
(Bicycle Rental & Delivery Services)
Washington,DC

The Bicycle Place
Silver Spring, MD

Bicycle Pro Shop
Washington, DC

Bicycle Pro Shop
Alexandria, VA (new location)

Big Wheel Bikes
Alexandria (Old Town), Arlington, Bethesda, Washington DC (Georgetown)

Bike Club
Falls Church, VA

new in Burke

The Bike Lane
Burke and Reston VA

Bikes@Vienna
Vienna, VA

Capitol Hill Bikes
Washington, DC

Citibikes
Washington, DC

College Park Bicycle
College Park, MD

Conte's Bicycles & Fitness Equipment
Arlington, VA

Conte's Bicycles & Fitness Equipment
Bethesda, MD

Gaithersburg Bicycles
Gaithersburg, MD

The Green Commuter
Takoma Park, MD

Hunt Valley Bicycles

Laurel Bicycle Center
Laurel, MD

Oasis Bike Works
Fairfax, VA

Old Towne Bicycles
Woodbridge, VA

Papillion Cycles
Arlington, VA

Pedal-N-Spoke
Great Falls, VA

Performance Bicycle Shop
Bailey's Crossroads, Fairfax, Manassas, Reston, Springfield, Tyson's Corner

Potomac Outdoors
Cabin John, MD

Proteus Bike & Fitness
College Park, MD

REI
Baileys Crossroads, VA

REI
College Park, MD

Revolution Cycles
Arlington, VA

Revolution Cycles
Rockville, MD

Revolution Cycles
Stafford, VA

Spokes, Etc.
Alexandria, Mt. Vernon, Vienna/Oakton

TriSpeed
Sterling, VA

TriSpeed
Timonium, MD

Velocity Bicycle Cooperative
not a bike shop, but a shop where you can fix your bike, with the help of experienced volunteers. Alexandria, VA (moved from Old Town to Del Ray)

Village Skis & Bikes
Woodbridge, VA

Washington Bike Center
Fairfax, VA

Wheel Nuts Bike Shop
Alexandria, VA
 

about cargo bikes

The Ultra Motor A2B has a range of up to 40 miles with an optional 2nd battery.

Bicylce Pro Shop is carrying the new Giant Hybrid bike. They are electric, but you have to pedal to engage the assist, forcing you to get some exercise.

Bikes@Vienna is offering bikes for folks with special needs from Draisin. Some models have electric motor assist.

Here are bikes from Electric Motion Systems, being shown at a festival in DC.