| Cassino to Oswego (Illinois) | 4,917.50 mi (7,913.95 km) |
| Cassino to Oswego (New York) | 4,359.30 mi (7,015.62 km) |
| Cassino to Otsego (Minnesota) | 4,959.74 mi (7,981.94 km) |
| Cassino to Ottawa (Illinois) | 4,951.43 mi (7,968.55 km) |
| Cassino to Ottawa (Kansas) | 5,332.61 mi (8,582.01 km) |
| Cassino to Ottumwa (Iowa) | 5,108.34 mi (8,221.08 km) |
| Cassino to Overland (Missouri) | 5,132.59 mi (8,260.10 km) |
| Cassino to Overland Park (Kansas) | 5,296.38 mi (8,523.69 km) |
| Cassino to Overlea (Maryland) | 4,516.79 mi (7,269.07 km) |
| Cassino to Oviedo (Florida) | 5,176.07 mi (8,330.07 km) |
| Cassino to Owasso (Oklahoma) | 5,465.60 mi (8,796.04 km) |
| Cassino to Owatonna (Minnesota) | 4,998.91 mi (8,044.97 km) |
| Cassino to Owensboro (Kentucky) | 5,040.16 mi (8,111.35 km) |
| Cassino to Owings Mills (Maryland) | 4,526.97 mi (7,285.46 km) |
| Cassino to Owosso (Michigan) | 4,694.35 mi (7,554.83 km) |
