| Castelsarrasin to Oestrich-Winkel | 523.94 mi (843.19 km) |
| Castelsarrasin to Offenburg | 446.79 mi (719.04 km) |
| Castelsarrasin to Oftersheim | 510.58 mi (821.70 km) |
| Castelsarrasin to Ohrdruf | 648.87 mi (1,044.26 km) |
| Castelsarrasin to Ohringen | 533.98 mi (859.35 km) |
| Castelsarrasin to Olbernhau | 731.33 mi (1,176.96 km) |
| Castelsarrasin to Olching | 566.51 mi (911.70 km) |
| Castelsarrasin to Oldenburg | 707.10 mi (1,137.97 km) |
| Castelsarrasin to Oldenburg in Holstein | 833.48 mi (1,341.36 km) |
| Castelsarrasin to Olfen | 604.39 mi (972.68 km) |
| Castelsarrasin to Olpe | 574.65 mi (924.81 km) |
| Castelsarrasin to Olsberg | 609.87 mi (981.50 km) |
| Castelsarrasin to Oranienburg | 817.72 mi (1,316.00 km) |
| Castelsarrasin to Ortenberg | 573.51 mi (922.98 km) |
| Castelsarrasin to Oschatz | 748.89 mi (1,205.22 km) |
