| Middelkerke to Obernburg am Main | 292.79 mi (471.21 km) |
| Middelkerke to Obernkirchen | 279.64 mi (450.03 km) |
| Middelkerke to Oberschleissheim | 439.86 mi (707.88 km) |
| Middelkerke to Oberstdorf | 425.11 mi (684.15 km) |
| Middelkerke to Obertraubling | 441.56 mi (710.63 km) |
| Middelkerke to Obertshausen | 274.60 mi (441.93 km) |
| Middelkerke to Oberursel | 260.89 mi (419.86 km) |
| Middelkerke to Ochsenfurt | 336.07 mi (540.84 km) |
| Middelkerke to Ochsenhausen | 384.49 mi (618.78 km) |
| Middelkerke to Ochtrup | 200.01 mi (321.89 km) |
| Middelkerke to Odenthal | 186.69 mi (300.45 km) |
| Middelkerke to Oelde | 233.52 mi (375.82 km) |
| Middelkerke to Oelsnitz | 411.34 mi (661.98 km) |
| Middelkerke to Oer-Erkenschwick | 193.54 mi (311.47 km) |
| Middelkerke to Oerlinghausen | 256.76 mi (413.22 km) |
