| Plumstead to Olympia Heights (Florida) | 4,446.02 mi (7,155.18 km) |
| Plumstead to Omaha (Nebraska) | 4,299.41 mi (6,919.23 km) |
| Plumstead to On Top of the World Designated Place (Florida) | 4,358.18 mi (7,013.81 km) |
| Plumstead to Onalaska (Wisconsin) | 3,996.24 mi (6,431.33 km) |
| Plumstead to Oneida (New York) | 3,436.13 mi (5,529.92 km) |
| Plumstead to Oneonta (New York) | 3,438.64 mi (5,533.95 km) |
| Plumstead to Ontario (California) | 5,428.54 mi (8,736.39 km) |
| Plumstead to Ontario (Oregon) | 4,844.57 mi (7,796.58 km) |
| Plumstead to Opa-locka (Florida) | 4,433.59 mi (7,135.17 km) |
| Plumstead to Opelika (Alabama) | 4,309.52 mi (6,935.50 km) |
| Plumstead to Opelousas (Louisiana) | 4,687.60 mi (7,543.97 km) |
| Plumstead to Orange (California) | 5,448.94 mi (8,769.22 km) |
| Plumstead to Orange (Texas) | 4,775.23 mi (7,684.98 km) |
| Plumstead to Orange City (Florida) | 4,324.90 mi (6,960.26 km) |
| Plumstead to Orangeburg (South Carolina) | 4,083.96 mi (6,572.50 km) |
