| Fort Smith to Orangevale (California) | 1,493.67 mi (2,403.84 km) |
| Fort Smith to Orchards (Washington) | 1,631.07 mi (2,624.96 km) |
| Fort Smith to Orcutt (California) | 1,468.67 mi (2,363.60 km) |
| Fort Smith to Oregon (Ohio) | 733.47 mi (1,180.41 km) |
| Fort Smith to Oregon (Wisconsin) | 587.28 mi (945.13 km) |
| Fort Smith to Oregon City (Oregon) | 1,627.51 mi (2,619.23 km) |
| Fort Smith to Orem (Utah) | 1,003.66 mi (1,615.23 km) |
| Fort Smith to Orinda (California) | 1,546.40 mi (2,488.68 km) |
| Fort Smith to Orland Park (Illinois) | 557.18 mi (896.69 km) |
| Fort Smith to Orlando (Florida) | 898.59 mi (1,446.14 km) |
| Fort Smith to Ormond Beach (Florida) | 879.16 mi (1,414.87 km) |
| Fort Smith to Oro Valley (Arizona) | 972.56 mi (1,565.18 km) |
| Fort Smith to Oroville (California) | 1,513.42 mi (2,435.61 km) |
| Fort Smith to Oshkosh (Wisconsin) | 673.70 mi (1,084.22 km) |
| Fort Smith to Oskaloosa (Iowa) | 421.14 mi (677.75 km) |
