| Addlestone to Olympia Heights (Florida) | 4,422.77 mi (7,117.76 km) |
| Addlestone to Omaha (Nebraska) | 4,282.70 mi (6,892.34 km) |
| Addlestone to On Top of the World Designated Place (Florida) | 4,335.84 mi (6,977.87 km) |
| Addlestone to Onalaska (Wisconsin) | 3,979.29 mi (6,404.06 km) |
| Addlestone to Oneida (New York) | 3,416.02 mi (5,497.55 km) |
| Addlestone to Oneonta (New York) | 3,418.23 mi (5,501.10 km) |
| Addlestone to Ontario (California) | 5,415.28 mi (8,715.05 km) |
| Addlestone to Ontario (Oregon) | 4,833.58 mi (7,778.90 km) |
| Addlestone to Opa-locka (Florida) | 4,410.35 mi (7,097.77 km) |
| Addlestone to Opelika (Alabama) | 4,288.47 mi (6,901.63 km) |
| Addlestone to Opelousas (Louisiana) | 4,667.40 mi (7,511.45 km) |
| Addlestone to Orange (California) | 5,435.68 mi (8,747.88 km) |
| Addlestone to Orange (Texas) | 4,755.28 mi (7,652.88 km) |
| Addlestone to Orange City (Florida) | 4,302.37 mi (6,923.99 km) |
| Addlestone to Orangeburg (South Carolina) | 4,062.27 mi (6,537.60 km) |
