| Koscian to Olympia Heights (Florida) | 5,115.31 mi (8,232.30 km) |
| Koscian to Omaha (Nebraska) | 4,836.57 mi (7,783.71 km) |
| Koscian to On Top of the World Designated Place (Florida) | 5,010.80 mi (8,064.10 km) |
| Koscian to Onalaska (Wisconsin) | 4,541.21 mi (7,308.38 km) |
| Koscian to Oneida (New York) | 4,050.32 mi (6,518.36 km) |
| Koscian to Oneonta (New York) | 4,058.47 mi (6,531.47 km) |
| Koscian to Ontario (California) | 5,876.61 mi (9,457.50 km) |
| Koscian to Ontario (Oregon) | 5,244.97 mi (8,440.97 km) |
| Koscian to Opa-locka (Florida) | 5,102.63 mi (8,211.89 km) |
| Koscian to Opelika (Alabama) | 4,937.48 mi (7,946.11 km) |
| Koscian to Opelousas (Louisiana) | 5,296.78 mi (8,524.35 km) |
| Koscian to Orange (California) | 5,896.66 mi (9,489.76 km) |
| Koscian to Orange (Texas) | 5,378.62 mi (8,656.05 km) |
| Koscian to Orange City (Florida) | 4,981.40 mi (8,016.79 km) |
| Koscian to Orangeburg (South Carolina) | 4,725.24 mi (7,604.53 km) |
