| Fort Smith to Oakley (California) | 1,519.80 mi (2,445.89 km) |
| Fort Smith to Oakton (Virginia) | 969.99 mi (1,561.04 km) |
| Fort Smith to Oakville (Missouri) | 309.61 mi (498.26 km) |
| Fort Smith to Oatfield (Oregon) | 1,628.87 mi (2,621.41 km) |
| Fort Smith to Ocala (Florida) | 830.54 mi (1,336.62 km) |
| Fort Smith to Ocean Acres (New Jersey) | 1,138.85 mi (1,832.80 km) |
| Fort Smith to Ocean City (New Jersey) | 1,117.06 mi (1,797.74 km) |
| Fort Smith to Ocean Pines (Maryland) | 1,080.86 mi (1,739.48 km) |
| Fort Smith to Ocean Pointe (Hawaii) | 3,925.04 mi (6,316.74 km) |
| Fort Smith to Ocean Springs (Mississippi) | 470.48 mi (757.17 km) |
| Fort Smith to Oceanside (California) | 1,314.74 mi (2,115.86 km) |
| Fort Smith to Oceanside (New York) | 1,183.21 mi (1,904.19 km) |
| Fort Smith to Ocoee (Florida) | 884.78 mi (1,423.92 km) |
| Fort Smith to Oconomowoc (Wisconsin) | 620.58 mi (998.73 km) |
| Fort Smith to Odenton (Maryland) | 1,004.18 mi (1,616.08 km) |
