| Fort Smith to Oak Harbor (Washington) | 1,693.52 mi (2,725.45 km) |
| Fort Smith to Oak Hills (Oregon) | 1,642.76 mi (2,643.77 km) |
| Fort Smith to Oak Lawn (Illinois) | 566.42 mi (911.56 km) |
| Fort Smith to Oak Park (California) | 1,383.60 mi (2,226.69 km) |
| Fort Smith to Oak Park (Illinois) | 574.24 mi (924.15 km) |
| Fort Smith to Oak Park (Michigan) | 775.66 mi (1,248.31 km) |
| Fort Smith to Oak Ridge (Florida) | 894.81 mi (1,440.06 km) |
| Fort Smith to Oak Ridge (New Jersey) | 1,145.22 mi (1,843.05 km) |
| Fort Smith to Oak Ridge (Tennessee) | 566.99 mi (912.48 km) |
| Fort Smith to Oakdale (California) | 1,473.99 mi (2,372.15 km) |
| Fort Smith to Oakdale (Minnesota) | 670.02 mi (1,078.29 km) |
| Fort Smith to Oakland (California) | 1,548.68 mi (2,492.36 km) |
| Fort Smith to Oakland (New Jersey) | 1,158.19 mi (1,863.93 km) |
| Fort Smith to Oakland Park (Florida) | 1,053.51 mi (1,695.46 km) |
| Fort Smith to Oakleaf Plantation (Florida) | 810.70 mi (1,304.69 km) |
