| Bend to Olympia Heights (Florida) | 2,608.49 mi (4,197.96 km) |
| Bend to Omaha (Nebraska) | 1,292.53 mi (2,080.13 km) |
| Bend to On Top of the World Designated Place (Florida) | 2,370.17 mi (3,814.42 km) |
| Bend to Onalaska (Wisconsin) | 1,488.45 mi (2,395.43 km) |
| Bend to Oneida (New York) | 2,256.59 mi (3,631.63 km) |
| Bend to Oneonta (New York) | 2,298.78 mi (3,699.53 km) |
| Bend to Ontario (California) | 719.86 mi (1,158.50 km) |
| Bend to Ontario (Oregon) | 215.22 mi (346.36 km) |
| Bend to Opa-locka (Florida) | 2,604.77 mi (4,191.97 km) |
| Bend to Opelika (Alabama) | 2,079.66 mi (3,346.89 km) |
| Bend to Opelousas (Louisiana) | 1,844.30 mi (2,968.11 km) |
| Bend to Orange (California) | 732.57 mi (1,178.96 km) |
| Bend to Orange (Texas) | 1,784.63 mi (2,872.09 km) |
| Bend to Orange City (Florida) | 2,425.67 mi (3,903.74 km) |
| Bend to Orangeburg (South Carolina) | 2,271.51 mi (3,655.64 km) |
