| Wattrelos to Obernburg am Main | 268.22 mi (431.66 km) |
| Wattrelos to Obernkirchen | 275.90 mi (444.01 km) |
| Wattrelos to Oberschleissheim | 411.00 mi (661.45 km) |
| Wattrelos to Oberstdorf | 392.07 mi (630.98 km) |
| Wattrelos to Obertraubling | 416.17 mi (669.76 km) |
| Wattrelos to Obertshausen | 251.21 mi (404.29 km) |
| Wattrelos to Oberursel | 238.23 mi (383.40 km) |
| Wattrelos to Ochsenfurt | 311.54 mi (501.37 km) |
| Wattrelos to Ochsenhausen | 352.81 mi (567.80 km) |
| Wattrelos to Ochtrup | 200.18 mi (322.16 km) |
| Wattrelos to Odenthal | 171.58 mi (276.14 km) |
| Wattrelos to Oelde | 227.13 mi (365.52 km) |
| Wattrelos to Oelsnitz | 393.09 mi (632.62 km) |
| Wattrelos to Oer-Erkenschwick | 186.45 mi (300.06 km) |
| Wattrelos to Oerlinghausen | 250.93 mi (403.84 km) |
