| Marum to Oberkirch | 328.65 mi (528.92 km) |
| Marum to Obernburg am Main | 259.94 mi (418.33 km) |
| Marum to Obernkirchen | 134.05 mi (215.73 km) |
| Marum to Oberschleissheim | 410.14 mi (660.06 km) |
| Marum to Oberstdorf | 434.22 mi (698.80 km) |
| Marum to Obertraubling | 386.05 mi (621.29 km) |
| Marum to Obertshausen | 239.78 mi (385.89 km) |
| Marum to Oberursel | 226.35 mi (364.28 km) |
| Marum to Ochsenfurt | 291.99 mi (469.91 km) |
| Marum to Ochsenhausen | 386.06 mi (621.31 km) |
| Marum to Ochtrup | 75.86 mi (122.08 km) |
| Marum to Odenthal | 150.63 mi (242.42 km) |
| Marum to Oelde | 120.63 mi (194.14 km) |
| Marum to Oelsnitz | 314.89 mi (506.77 km) |
| Marum to Oer-Erkenschwick | 112.13 mi (180.46 km) |
