| Mariestad to Oberkirch | 740.05 mi (1,191.00 km) |
| Mariestad to Obernburg am Main | 640.19 mi (1,030.28 km) |
| Mariestad to Obernkirchen | 480.80 mi (773.77 km) |
| Mariestad to Oberschleissheim | 727.82 mi (1,171.32 km) |
| Mariestad to Oberstdorf | 793.52 mi (1,277.04 km) |
| Mariestad to Obertraubling | 675.87 mi (1,087.71 km) |
| Mariestad to Obertshausen | 628.88 mi (1,012.08 km) |
| Mariestad to Oberursel | 623.19 mi (1,002.93 km) |
| Mariestad to Ochsenfurt | 643.17 mi (1,035.08 km) |
| Mariestad to Ochsenhausen | 751.10 mi (1,208.78 km) |
| Mariestad to Ochtrup | 517.86 mi (833.42 km) |
| Mariestad to Odenthal | 592.26 mi (953.15 km) |
| Mariestad to Oelde | 523.83 mi (843.03 km) |
| Mariestad to Oelsnitz | 576.08 mi (927.11 km) |
| Mariestad to Oer-Erkenschwick | 551.61 mi (887.73 km) |
