From Washington DC and the Capital Beltway (I-495):

• Take I-95 North toward Baltimore;
  8 miles to MD Rte 216 West (toward Scaggsville);
  Go 1.2 miles, turn right onto Leishear Rd;
  After 0.8 miles, turn left onto Gorman Rd;
  Go 0.7 miles, cross traffic circle and bridge over U.S. Rte 29;
  Road name changes to Johns Hopkins Road. APL is on the right about a half-mile past Rte 29.
• From the Capital Beltway (I-495):
  Take I-95 North toward Baltimore;
  10 miles to Columbia exit (MD Rte. 32 West);
  2.5 miles to Washington DC exit (U.S. Rte 29 South);
  1.5 miles to Johns Hopkins Rd;
  Exit onto Johns Hopkins Rd.
• From the Capital Beltway (I-495):
  Take U.S. Rte. 29 North (Colesville Rd) 10 miles and follow signs for the turn onto Johns Hopkins Rd.

From Ronald Reagan Washington National Airport:

Take the George Washington Memorial Pkwy North;
16 miles to the Capital Beltway (I-495) East or North toward Baltimore;
15 miles to I-95 North toward Baltimore;
10 miles to Columbia exit (MD Rte. 32 West);
2.5 miles to Washington DC exit (U.S. Rte 29 South);
1.5 miles to Johns Hopkins Rd;
Exit onto Johns Hopkins Rd.

From Washington Dulles International Airport:

Dulles Airport Access Road to the Capital Beltway (I-495) East or North toward Baltimore;
18 miles to I-95 North toward Baltimore;
10 miles to Columbia exit (MD Rte. 32 West);
2.5 miles to Washington DC exit (U.S. Rte 29 South);
1.5 miles to Johns Hopkins Rd;
Exit onto Johns Hopkins Rd.

Baltimore Area:

Take I-95 South;
From the Baltimore Beltway (I-695) intersection;
13 miles to Columbia exit (MD Rte 32 West);
2.5 miles to Washington DC exit (U.S. Rte 29 South);
1.5 miles to Johns Hopkins Rd;
Exit onto Johns Hopkins Rd.

From Baltimore-Washington International Airport:

Take I-195 to I-95 South;
10 miles to Columbia exit (MD Rte 32 West);
2.5 miles to Washington DC exit (U.S. Rte 29 South);
1.5 miles to Johns Hopkins Rd;
Exit onto Johns Hopkins Rd.