| Mechelen-aan-de-Maas to Obernburg am Main | 171.17 mi (275.47 km) |
| Mechelen-aan-de-Maas to Obernkirchen | 170.71 mi (274.73 km) |
| Mechelen-aan-de-Maas to Oberschleissheim | 323.74 mi (521.01 km) |
| Mechelen-aan-de-Maas to Oberstdorf | 322.53 mi (519.07 km) |
| Mechelen-aan-de-Maas to Obertraubling | 319.51 mi (514.19 km) |
| Mechelen-aan-de-Maas to Obertshausen | 151.76 mi (244.23 km) |
| Mechelen-aan-de-Maas to Oberursel | 137.45 mi (221.20 km) |
| Mechelen-aan-de-Maas to Ochsenfurt | 213.78 mi (344.04 km) |
| Mechelen-aan-de-Maas to Ochsenhausen | 277.53 mi (446.64 km) |
| Mechelen-aan-de-Maas to Ochtrup | 105.13 mi (169.19 km) |
| Mechelen-aan-de-Maas to Odenthal | 61.52 mi (99.01 km) |
| Mechelen-aan-de-Maas to Oelde | 120.26 mi (193.54 km) |
| Mechelen-aan-de-Maas to Oelsnitz | 285.58 mi (459.59 km) |
| Mechelen-aan-de-Maas to Oer-Erkenschwick | 80.37 mi (129.34 km) |
| Mechelen-aan-de-Maas to Oerlinghausen | 144.07 mi (231.85 km) |
