| Marienberg to Obernburg am Main | 185.41 mi (298.39 km) |
| Marienberg to Obernkirchen | 207.02 mi (333.17 km) |
| Marienberg to Oberschleissheim | 179.37 mi (288.66 km) |
| Marienberg to Oberstdorf | 257.88 mi (415.02 km) |
| Marienberg to Obertraubling | 123.27 mi (198.38 km) |
| Marienberg to Obertshausen | 194.27 mi (312.65 km) |
| Marienberg to Oberursel | 203.48 mi (327.46 km) |
| Marienberg to Ochsenfurt | 152.49 mi (245.40 km) |
| Marienberg to Ochsenhausen | 228.17 mi (367.20 km) |
| Marienberg to Ochtrup | 278.72 mi (448.55 km) |
| Marienberg to Odenthal | 264.65 mi (425.92 km) |
| Marienberg to Oelde | 231.60 mi (372.72 km) |
| Marienberg to Oelsnitz | 45.71 mi (73.56 km) |
| Marienberg to Oer-Erkenschwick | 264.99 mi (426.46 km) |
| Marienberg to Oerlinghausen | 214.42 mi (345.08 km) |
