St Mary's County, Maryland
From Washington DC and Northern VA
From the Washington Beltway take Rt 5 South (Exit 7). Follow Rt. 5 South until it merges with Rt. 301. In Waldorf, turn left onto Rt. 5. Follow to split of Rt. 235. Continue on Rt. 235 South to Patuxent Naval Air Station in Lexington Park MD.
From Baltimore MD
Take Rt. 3 South to Rt. 301 South. Take Rt. 301 to Rt. 4. Take Rt. 4 East towards Prince Frederick. Rt. 4 will eventually merge with Rt. 2. Continue to Solomons Island. Cross the bridge and go approximately 4 miles to the first stoplight. Turn left onto Rt. 235. Follow to Patuxent Naval Air Station in Lexington Park MD.
From Southern VA
Take Rt. 301 North and cross the Potomac River Bridge. Go approximately 3 miles and turn Right on to Rt. 234 East. Follow Rt. 234 East for approximately 10 miles. Take Rt. 5 South through Leonardtown. Turn Left on Rt. 246. Follow to Patuxent River Naval Air Station in Lexington Park MD.