| Castelnau-le-Lez to Oswego (Illinois) | 4,424.49 mi (7,120.53 km) |
| Castelnau-le-Lez to Oswego (New York) | 3,854.86 mi (6,203.79 km) |
| Castelnau-le-Lez to Otsego (Minnesota) | 4,487.02 mi (7,221.16 km) |
| Castelnau-le-Lez to Ottawa (Illinois) | 4,458.30 mi (7,174.95 km) |
| Castelnau-le-Lez to Ottawa (Kansas) | 4,843.22 mi (7,794.41 km) |
| Castelnau-le-Lez to Ottumwa (Iowa) | 4,620.35 mi (7,435.73 km) |
| Castelnau-le-Lez to Overland (Missouri) | 4,635.08 mi (7,459.44 km) |
| Castelnau-le-Lez to Overland Park (Kansas) | 4,806.68 mi (7,735.61 km) |
| Castelnau-le-Lez to Overlea (Maryland) | 4,003.25 mi (6,442.60 km) |
| Castelnau-le-Lez to Oviedo (Florida) | 4,652.50 mi (7,487.48 km) |
| Castelnau-le-Lez to Owasso (Oklahoma) | 4,971.46 mi (8,000.79 km) |
| Castelnau-le-Lez to Owatonna (Minnesota) | 4,521.59 mi (7,276.80 km) |
| Castelnau-le-Lez to Owensboro (Kentucky) | 4,535.68 mi (7,299.47 km) |
| Castelnau-le-Lez to Owings Mills (Maryland) | 4,013.79 mi (6,459.57 km) |
| Castelnau-le-Lez to Owosso (Michigan) | 4,198.64 mi (6,757.06 km) |
