| Merchtem to Obernburg am Main | 229.68 mi (369.64 km) |
| Merchtem to Obernkirchen | 227.92 mi (366.81 km) |
| Merchtem to Oberschleissheim | 377.96 mi (608.26 km) |
| Merchtem to Oberstdorf | 367.12 mi (590.83 km) |
| Merchtem to Obertraubling | 378.49 mi (609.12 km) |
| Merchtem to Obertshausen | 211.40 mi (340.22 km) |
| Merchtem to Oberursel | 197.68 mi (318.14 km) |
| Merchtem to Ochsenfurt | 272.92 mi (439.23 km) |
| Merchtem to Ochsenhausen | 324.96 mi (522.98 km) |
| Merchtem to Ochtrup | 153.09 mi (246.37 km) |
| Merchtem to Odenthal | 125.45 mi (201.90 km) |
| Merchtem to Oelde | 179.11 mi (288.25 km) |
| Merchtem to Oelsnitz | 349.15 mi (561.90 km) |
| Merchtem to Oer-Erkenschwick | 138.44 mi (222.79 km) |
| Merchtem to Oerlinghausen | 202.91 mi (326.55 km) |
