| Saltash to Olympia Heights (Florida) | 4,271.82 mi (6,874.84 km) |
| Saltash to Omaha (Nebraska) | 4,178.29 mi (6,724.30 km) |
| Saltash to On Top of the World Designated Place (Florida) | 4,191.60 mi (6,745.73 km) |
| Saltash to Onalaska (Wisconsin) | 3,873.50 mi (6,233.79 km) |
| Saltash to Oneida (New York) | 3,288.31 mi (5,292.03 km) |
| Saltash to Oneonta (New York) | 3,288.42 mi (5,292.20 km) |
| Saltash to Ontario (California) | 5,333.55 mi (8,583.51 km) |
| Saltash to Ontario (Oregon) | 4,767.97 mi (7,673.30 km) |
| Saltash to Opa-locka (Florida) | 4,259.53 mi (6,855.05 km) |
| Saltash to Opelika (Alabama) | 4,153.46 mi (6,684.35 km) |
| Saltash to Opelousas (Louisiana) | 4,538.14 mi (7,303.44 km) |
| Saltash to Orange (California) | 5,353.97 mi (8,616.39 km) |
| Saltash to Orange (Texas) | 4,627.79 mi (7,447.71 km) |
| Saltash to Orange City (Florida) | 4,156.67 mi (6,689.52 km) |
| Saltash to Orangeburg (South Carolina) | 3,922.82 mi (6,313.17 km) |
