| Sheerness to Olympia Heights (Florida) | 4,475.01 mi (7,201.83 km) |
| Sheerness to Omaha (Nebraska) | 4,325.53 mi (6,961.27 km) |
| Sheerness to On Top of the World Designated Place (Florida) | 4,386.98 mi (7,060.16 km) |
| Sheerness to Onalaska (Wisconsin) | 4,022.52 mi (6,473.62 km) |
| Sheerness to Oneida (New York) | 3,464.13 mi (5,574.97 km) |
| Sheerness to Oneonta (New York) | 3,466.76 mi (5,579.21 km) |
| Sheerness to Ontario (California) | 5,452.30 mi (8,774.63 km) |
| Sheerness to Ontario (Oregon) | 4,866.61 mi (7,832.05 km) |
| Sheerness to Opa-locka (Florida) | 4,462.57 mi (7,181.82 km) |
| Sheerness to Opelika (Alabama) | 4,337.90 mi (6,981.17 km) |
| Sheerness to Opelousas (Louisiana) | 4,715.62 mi (7,589.06 km) |
| Sheerness to Orange (California) | 5,472.70 mi (8,807.45 km) |
| Sheerness to Orange (Texas) | 4,803.13 mi (7,729.89 km) |
| Sheerness to Orange City (Florida) | 4,353.75 mi (7,006.69 km) |
| Sheerness to Orangeburg (South Carolina) | 4,112.57 mi (6,618.54 km) |
