| Castelnaudary to Obernburg am Main | 564.75 mi (908.88 km) |
| Castelnaudary to Obernkirchen | 701.22 mi (1,128.51 km) |
| Castelnaudary to Oberschleissheim | 574.32 mi (924.27 km) |
| Castelnaudary to Oberstdorf | 492.78 mi (793.05 km) |
| Castelnaudary to Obertraubling | 624.63 mi (1,005.25 km) |
| Castelnaudary to Obertshausen | 568.43 mi (914.79 km) |
| Castelnaudary to Oberursel | 569.21 mi (916.06 km) |
| Castelnaudary to Ochsenfurt | 582.73 mi (937.82 km) |
| Castelnaudary to Ochsenhausen | 506.22 mi (814.69 km) |
| Castelnaudary to Ochtrup | 660.04 mi (1,062.23 km) |
| Castelnaudary to Odenthal | 585.27 mi (941.90 km) |
| Castelnaudary to Oelde | 654.83 mi (1,053.85 km) |
| Castelnaudary to Oelsnitz | 686.77 mi (1,105.25 km) |
| Castelnaudary to Oer-Erkenschwick | 625.66 mi (1,006.90 km) |
| Castelnaudary to Oerlinghausen | 673.66 mi (1,084.15 km) |
