| Benton to Olympia Heights (Florida) | 951.67 mi (1,531.56 km) |
| Benton to Omaha (Nebraska) | 499.24 mi (803.45 km) |
| Benton to On Top of the World Designated Place (Florida) | 711.67 mi (1,145.32 km) |
| Benton to Onalaska (Wisconsin) | 647.41 mi (1,041.90 km) |
| Benton to Oneida (New York) | 1,080.00 mi (1,738.08 km) |
| Benton to Oneonta (New York) | 1,088.55 mi (1,751.86 km) |
| Benton to Ontario (California) | 1,425.62 mi (2,294.32 km) |
| Benton to Ontario (Oregon) | 1,451.43 mi (2,335.86 km) |
| Benton to Opa-locka (Florida) | 947.30 mi (1,524.53 km) |
| Benton to Opelika (Alabama) | 434.48 mi (699.23 km) |
| Benton to Opelousas (Louisiana) | 281.44 mi (452.94 km) |
| Benton to Orange (California) | 1,440.35 mi (2,318.02 km) |
| Benton to Orange (Texas) | 315.53 mi (507.80 km) |
| Benton to Orange City (Florida) | 768.29 mi (1,236.44 km) |
| Benton to Orangeburg (South Carolina) | 673.94 mi (1,084.60 km) |
