| Plonsk to Olympia Heights (Florida) | 5,245.73 mi (8,442.19 km) |
| Plonsk to Omaha (Nebraska) | 4,924.52 mi (7,925.24 km) |
| Plonsk to On Top of the World Designated Place (Florida) | 5,134.92 mi (8,263.86 km) |
| Plonsk to Onalaska (Wisconsin) | 4,632.29 mi (7,454.95 km) |
| Plonsk to Oneida (New York) | 4,163.31 mi (6,700.20 km) |
| Plonsk to Oneonta (New York) | 4,173.20 mi (6,716.12 km) |
| Plonsk to Ontario (California) | 5,936.31 mi (9,553.56 km) |
| Plonsk to Ontario (Oregon) | 5,294.22 mi (8,520.22 km) |
| Plonsk to Opa-locka (Florida) | 5,232.96 mi (8,421.64 km) |
| Plonsk to Opelika (Alabama) | 5,053.07 mi (8,132.14 km) |
| Plonsk to Opelousas (Louisiana) | 5,405.48 mi (8,699.29 km) |
| Plonsk to Orange (California) | 5,956.19 mi (9,585.57 km) |
| Plonsk to Orange (Texas) | 5,485.27 mi (8,827.70 km) |
| Plonsk to Orange City (Florida) | 5,107.01 mi (8,218.94 km) |
| Plonsk to Orangeburg (South Carolina) | 4,845.75 mi (7,798.47 km) |
