| Fort Washington to Oak Harbor (Washington) | 2,341.84 mi (3,768.82 km) |
| Fort Washington to Oak Hills (Oregon) | 2,361.72 mi (3,800.83 km) |
| Fort Washington to Oak Lawn (Illinois) | 602.61 mi (969.81 km) |
| Fort Washington to Oak Park (California) | 2,321.62 mi (3,736.29 km) |
| Fort Washington to Oak Park (Illinois) | 607.93 mi (978.37 km) |
| Fort Washington to Oak Park (Michigan) | 413.82 mi (665.99 km) |
| Fort Washington to Oak Ridge (Florida) | 752.76 mi (1,211.45 km) |
| Fort Washington to Oak Ridge (New Jersey) | 207.16 mi (333.40 km) |
| Fort Washington to Oak Ridge (Tennessee) | 443.46 mi (713.68 km) |
| Fort Washington to Oakdale (California) | 2,356.71 mi (3,792.75 km) |
| Fort Washington to Oakdale (Minnesota) | 925.60 mi (1,489.61 km) |
| Fort Washington to Oakland (California) | 2,428.18 mi (3,907.78 km) |
| Fort Washington to Oakland (New Jersey) | 216.09 mi (347.76 km) |
| Fort Washington to Oakland Park (Florida) | 886.53 mi (1,426.74 km) |
| Fort Washington to Oakleaf Plantation (Florida) | 652.29 mi (1,049.76 km) |
