| Mariestad to Oerlinghausen | 506.99 mi (815.92 km) |
| Mariestad to Oestrich-Winkel | 644.55 mi (1,037.31 km) |
| Mariestad to Offenburg | 746.40 mi (1,201.22 km) |
| Mariestad to Oftersheim | 678.15 mi (1,091.38 km) |
| Mariestad to Ohrdruf | 557.46 mi (897.15 km) |
| Mariestad to Ohringen | 679.09 mi (1,092.90 km) |
| Mariestad to Olbernhau | 555.38 mi (893.80 km) |
| Mariestad to Olching | 732.60 mi (1,179.01 km) |
| Mariestad to Oldenburg | 440.59 mi (709.06 km) |
| Mariestad to Oldenburg in Holstein | 323.86 mi (521.20 km) |
| Mariestad to Olfen | 544.53 mi (876.34 km) |
| Mariestad to Olpe | 581.21 mi (935.37 km) |
| Mariestad to Olsberg | 549.60 mi (884.49 km) |
| Mariestad to Oranienburg | 411.42 mi (662.11 km) |
| Mariestad to Ortenberg | 606.94 mi (976.77 km) |
