| Texarkana to Olympia (Washington) | 1,770.82 mi (2,849.86 km) |
| Texarkana to Olympia Heights (Florida) | 981.96 mi (1,580.31 km) |
| Texarkana to Omaha (Nebraska) | 550.48 mi (885.91 km) |
| Texarkana to On Top of the World Designated Place (Florida) | 757.97 mi (1,219.84 km) |
| Texarkana to Onalaska (Wisconsin) | 737.60 mi (1,187.05 km) |
| Texarkana to Oneida (New York) | 1,196.33 mi (1,925.31 km) |
| Texarkana to Oneonta (New York) | 1,204.45 mi (1,938.37 km) |
| Texarkana to Ontario (California) | 1,349.02 mi (2,171.04 km) |
| Texarkana to Ontario (Oregon) | 1,426.64 mi (2,295.95 km) |
| Texarkana to Opa-locka (Florida) | 979.08 mi (1,575.68 km) |
| Texarkana to Opelika (Alabama) | 507.05 mi (816.02 km) |
| Texarkana to Opelousas (Louisiana) | 233.69 mi (376.09 km) |
| Texarkana to Orange (California) | 1,362.81 mi (2,193.23 km) |
| Texarkana to Orange (Texas) | 230.69 mi (371.25 km) |
| Texarkana to Orange City (Florida) | 817.38 mi (1,315.45 km) |
