| Mechelen to Obernburg am Main | 220.88 mi (355.47 km) |
| Mechelen to Obernkirchen | 216.39 mi (348.25 km) |
| Mechelen to Oberschleissheim | 370.39 mi (596.09 km) |
| Mechelen to Oberstdorf | 361.70 mi (582.10 km) |
| Mechelen to Obertraubling | 369.70 mi (594.97 km) |
| Mechelen to Obertshausen | 202.28 mi (325.53 km) |
| Mechelen to Oberursel | 188.38 mi (303.16 km) |
| Mechelen to Ochsenfurt | 264.01 mi (424.88 km) |
| Mechelen to Ochsenhausen | 318.87 mi (513.17 km) |
| Mechelen to Ochtrup | 141.89 mi (228.35 km) |
| Mechelen to Odenthal | 114.54 mi (184.34 km) |
| Mechelen to Oelde | 167.56 mi (269.66 km) |
| Mechelen to Oelsnitz | 338.68 mi (545.06 km) |
| Mechelen to Oer-Erkenschwick | 126.88 mi (204.20 km) |
| Mechelen to Oerlinghausen | 191.36 mi (307.96 km) |
