| Opwijk to Obernburg am Main | 231.75 mi (372.97 km) |
| Opwijk to Obernkirchen | 229.90 mi (369.98 km) |
| Opwijk to Oberschleissheim | 379.90 mi (611.39 km) |
| Opwijk to Oberstdorf | 368.80 mi (593.53 km) |
| Opwijk to Obertraubling | 380.56 mi (612.45 km) |
| Opwijk to Obertshausen | 213.50 mi (343.60 km) |
| Opwijk to Oberursel | 199.80 mi (321.54 km) |
| Opwijk to Ochsenfurt | 275.00 mi (442.57 km) |
| Opwijk to Ochsenhausen | 326.73 mi (525.82 km) |
| Opwijk to Ochtrup | 154.87 mi (249.24 km) |
| Opwijk to Odenthal | 127.62 mi (205.39 km) |
| Opwijk to Oelde | 181.14 mi (291.52 km) |
| Opwijk to Oelsnitz | 351.32 mi (565.39 km) |
| Opwijk to Oer-Erkenschwick | 140.47 mi (226.06 km) |
| Opwijk to Oerlinghausen | 204.93 mi (329.81 km) |
