| West Falls Church to Odenton (Maryland) | 29.96 mi (48.22 km) |
| West Falls Church to Odessa (Texas) | 1,491.48 mi (2,400.30 km) |
| West Falls Church to Ogden (Utah) | 1,834.57 mi (2,952.46 km) |
| West Falls Church to Oildale (California) | 2,296.50 mi (3,695.86 km) |
| West Falls Church to Ojus (Florida) | 908.44 mi (1,461.99 km) |
| West Falls Church to Okemos (Michigan) | 461.59 mi (742.86 km) |
| West Falls Church to Oklahoma City (Oklahoma) | 1,140.93 mi (1,836.15 km) |
| West Falls Church to Okmulgee (Oklahoma) | 1,057.21 mi (1,701.42 km) |
| West Falls Church to Olathe (Kansas) | 946.97 mi (1,524.01 km) |
| West Falls Church to Old Jamestown (Missouri) | 704.11 mi (1,133.16 km) |
| West Falls Church to Oldsmar (Florida) | 810.83 mi (1,304.90 km) |
| West Falls Church to Olean (New York) | 231.69 mi (372.87 km) |
| West Falls Church to Olive Branch (Mississippi) | 748.73 mi (1,204.96 km) |
| West Falls Church to Olivehurst (California) | 2,359.03 mi (3,796.49 km) |
| West Falls Church to Olney (Maryland) | 20.44 mi (32.90 km) |
