| Castelnau-le-Lez to Odessa (Texas) | 5,451.44 mi (8,773.24 km) |
| Castelnau-le-Lez to Ogden (Utah) | 5,351.22 mi (8,611.96 km) |
| Castelnau-le-Lez to Oildale (California) | 5,903.57 mi (9,500.89 km) |
| Castelnau-le-Lez to Ojus (Florida) | 4,720.75 mi (7,597.31 km) |
| Castelnau-le-Lez to Okemos (Michigan) | 4,219.83 mi (6,791.16 km) |
| Castelnau-le-Lez to Oklahoma City (Oklahoma) | 5,079.43 mi (8,174.56 km) |
| Castelnau-le-Lez to Okmulgee (Oklahoma) | 5,009.70 mi (8,062.33 km) |
| Castelnau-le-Lez to Olathe (Kansas) | 4,812.31 mi (7,744.66 km) |
| Castelnau-le-Lez to Old Jamestown (Missouri) | 4,625.40 mi (7,443.87 km) |
| Castelnau-le-Lez to Oldsmar (Florida) | 4,749.02 mi (7,642.80 km) |
| Castelnau-le-Lez to Olean (New York) | 3,987.66 mi (6,417.52 km) |
| Castelnau-le-Lez to Olive Branch (Mississippi) | 4,774.71 mi (7,684.15 km) |
| Castelnau-le-Lez to Olivehurst (California) | 5,785.57 mi (9,310.98 km) |
| Castelnau-le-Lez to Olney (Maryland) | 4,036.31 mi (6,495.81 km) |
| Castelnau-le-Lez to Olympia (Washington) | 5,382.37 mi (8,662.09 km) |
