| Koszalin to Olympia Heights (Florida) | 5,044.63 mi (8,118.55 km) |
| Koszalin to Omaha (Nebraska) | 4,724.34 mi (7,603.09 km) |
| Koszalin to On Top of the World Designated Place (Florida) | 4,932.08 mi (7,937.42 km) |
| Koszalin to Onalaska (Wisconsin) | 4,431.22 mi (7,131.36 km) |
| Koszalin to Oneida (New York) | 3,959.33 mi (6,371.93 km) |
| Koszalin to Oneonta (New York) | 3,969.28 mi (6,387.93 km) |
| Koszalin to Ontario (California) | 5,747.92 mi (9,250.39 km) |
| Koszalin to Ontario (Oregon) | 5,111.52 mi (8,226.20 km) |
| Koszalin to Opa-locka (Florida) | 5,031.83 mi (8,097.95 km) |
| Koszalin to Opelika (Alabama) | 4,849.17 mi (7,803.98 km) |
| Koszalin to Opelousas (Louisiana) | 5,201.61 mi (8,371.19 km) |
| Koszalin to Orange (California) | 5,767.90 mi (9,282.53 km) |
| Koszalin to Orange (Texas) | 5,281.55 mi (8,499.83 km) |
| Koszalin to Orange City (Florida) | 4,904.50 mi (7,893.03 km) |
| Koszalin to Orangeburg (South Carolina) | 4,642.30 mi (7,471.07 km) |
