| West Falls Church to Oskaloosa (Iowa) | 832.78 mi (1,340.24 km) |
| West Falls Church to Oswego (Illinois) | 618.62 mi (995.58 km) |
| West Falls Church to Oswego (New York) | 318.92 mi (513.26 km) |
| West Falls Church to Otsego (Minnesota) | 949.37 mi (1,527.86 km) |
| West Falls Church to Ottawa (Illinois) | 638.06 mi (1,026.85 km) |
| West Falls Church to Ottawa (Kansas) | 972.83 mi (1,565.62 km) |
| West Falls Church to Ottumwa (Iowa) | 819.33 mi (1,318.59 km) |
| West Falls Church to Overland (Missouri) | 709.43 mi (1,141.72 km) |
| West Falls Church to Overland Park (Kansas) | 939.83 mi (1,512.51 km) |
| West Falls Church to Overlea (Maryland) | 49.82 mi (80.17 km) |
| West Falls Church to Oviedo (Florida) | 741.47 mi (1,193.28 km) |
| West Falls Church to Owasso (Oklahoma) | 1,034.41 mi (1,664.72 km) |
| West Falls Church to Owatonna (Minnesota) | 903.62 mi (1,454.24 km) |
| West Falls Church to Owensboro (Kentucky) | 543.45 mi (874.59 km) |
| West Falls Church to Owings Mills (Maryland) | 43.34 mi (69.75 km) |
