| Castelnaudary to Oswego (Illinois) | 4,355.19 mi (7,008.99 km) |
| Castelnaudary to Oswego (New York) | 3,780.96 mi (6,084.87 km) |
| Castelnaudary to Otsego (Minnesota) | 4,425.29 mi (7,121.81 km) |
| Castelnaudary to Ottawa (Illinois) | 4,388.93 mi (7,063.30 km) |
| Castelnaudary to Ottawa (Kansas) | 4,775.06 mi (7,684.71 km) |
| Castelnaudary to Ottumwa (Iowa) | 4,552.89 mi (7,327.17 km) |
| Castelnaudary to Overland (Missouri) | 4,563.78 mi (7,344.69 km) |
| Castelnaudary to Overland Park (Kansas) | 4,738.43 mi (7,625.77 km) |
| Castelnaudary to Overlea (Maryland) | 3,924.59 mi (6,316.03 km) |
| Castelnaudary to Oviedo (Florida) | 4,566.56 mi (7,349.16 km) |
| Castelnaudary to Owasso (Oklahoma) | 4,901.33 mi (7,887.93 km) |
| Castelnaudary to Owatonna (Minnesota) | 4,458.19 mi (7,174.77 km) |
| Castelnaudary to Owensboro (Kentucky) | 4,461.36 mi (7,179.87 km) |
| Castelnaudary to Owings Mills (Maryland) | 3,935.33 mi (6,333.31 km) |
| Castelnaudary to Owosso (Michigan) | 4,128.38 mi (6,643.99 km) |
