From Reagan National Airport (DCA):
Take the George Washington Parkway North for 1.2 miles. Merge onto I-395 N towards Washington 1.7 miles. Keep left to take Southeast Fwy/ I-695 S 0.3 miles, Take South Capitol Street exit 0.3 miles. Slight right onto South Capitol Street SE/SE and continue to follow South Capitol Street SE 1.2 miles. Turn slight left onto Suitland Parkway SE 3.1 Miles. Take Branch Avenue/ MD-5 0.2 miles. Continue to follow MD-5 15.1 miles. Take the 1st left to stay on MD-5 South 3.2 miles. Turn left onto MD-5 S/ Leonardtown Road 17.7 miles. MD-5 becomes MD-235 S/ Three Notch Rd 17.2 miles. Turn right onto Exploration Park Drive 0.3 miles.

From Baltimore Washington International Airport (BWI):
Exit airport and bear right onto MD-170N/ Airport Loop/ Aviation Blvd. Continue to follow Airport Loop/ Aviation Blvd 3.0 miles. Turn left onto I-97 S 2.5 miles. Merge onto I-97 S toward Annapolis 14.3 miles. Take 50E/ US-301 N exit on left towards Annapolis/ Bay Bridge 0.5 miles. Take MD-665 exit toward Aris T Allen Blvd/ Riva Road 0.3 miles. Keep right to take Exit 22 MD-665S/ Aris T Allen Blvd towards Riva Road 1.4 miles. Merge onto MD-2 S/ Solomon’s Island Road 11.8 miles. Enter roundabout and take 3rd exit onto Solomon’s Island Road 6.9 miles. Enter next roundabout and take the 2nd exit onto MD-2 S 33.3 miles. MS-2 S becomes MD-4 3.9 miles. Turn left onto MD-235/ Three Notch Road 3.2 miles. Turn right onto Exploration Park Drive.

From Washington Dulles International Airport (IAD):
Take the Dulles Airport Access Road 12.1 miles. Merge onto Va-267 E toward I-495/ Exit 18-19/ VA-123/ Baltimore/ Richmond 1.1 miles. Merge onto I-495 S/ Capital Beltway/ I-495 via Exit 18 toward Richmond 17.2 miles. Keep right at the fork to stay on Capital Beltway/ I-495 Outerloop E 3.2 miles. Take MD-210 S/ Indian Head Highway Exit 3A 1.4 miles. Merge onto MD-210 S/ Indian Head Highway 9.9 miles. Bear left onto MD-228 E 6.6 miles. Stay straight on Md-5 BR S/ Leonardtown Road 19.4 miles. MD-5 becomes MD-235/ Three Notch Road 17.2 miles. Turn right onto Exploration Park Drive.

From Richmond:
Travel to I-95 toward Washington 25.4 miles. Merge onto Va-207 E via Exit 104 towards US-301/ Bowling Green/ Fort A.P. Hill 11.5 miles. VA-207 E becomes US-301 N 35.8 miles. Turn right onto MD-234/ Budds Creek Road 11.2 miles. Turn left onto MD-238 Chaptico Road 3.6 miles. MD-238/ Chaptico Road becomes MD-5 3.0 miles. Turn right onto MD-235 S/ Three Notch Road 17.2 miles. Turn right onto Exploration Park Drive.