Getting Around Gaithersburg

From D.C. and the south you can take the Capital Beltway (I495) to Interstate 270 North.

From Washington/Dulles International Airport. Follow the Dulles Access Road to Bethesda/Baltimore entrance ramp to 495. Take 495 (left lane exit) to 270 North. Take Exit #10 toward Clopper Road (MD 117).

From Baltimore Washington International Airport. Take 195 West. Take 95 South Exit #4B toward Washington. Take 495 West Exit #27-25 toward College Park/Silver Spring. Take 270 North Exit #35 toward Frederick. Take 270 Local North toward Montrose Road.
Take Exit #10 toward Clopper Road (MD 117).

The road network is centered at the intersection of the north-south Frederick Avenue (Maryland State Highway 355) and the east-west Diamond Avenue (Maryland State Highway 117). It is also connected to Frederick and Rockville by Interstate 270, which also connects it with the Capital Beltway.

Shady Grove station, the western terminus of the Red Line of the Washington Metro, is located just outside the city limits of Gaithersburg. Interstate 370 -- which presently connects I-270 with the Shady Grove station -- terminates within Gaithersburg's city limits, transitioning into Sam Eig Highway near Washingtonian Center. If the Intercounty Connector, an as-yet-unbuilt highway to Laurel, Maryland, is constructed, I-370 would become its western portion and Gaithersburg its terminus.

Gaithersburg is served by WMATA Metrobus, Montgomery County Ride-On bus service and three MARC stations on the Brunswick Line- at downtown Gaithersburg, Washington Grove, and at Metropolitan Grove. The mainline of the CSX Railroad bisects Montgomery County and runs through the center of Gaithersburg. As many as fifty trains a day pass through this town. The MARC trains run on the CSX tracks.

The Montgomery County Airpark is located a short distance outside Gaithersburg city limits. It serves general aviation purposes and is the only airport in Montgomery County.