| Markgroningen to Obernburg am Main | 64.68 mi (104.09 km) |
| Markgroningen to Obernkirchen | 232.28 mi (373.81 km) |
| Markgroningen to Oberschleissheim | 122.30 mi (196.83 km) |
| Markgroningen to Oberstdorf | 117.13 mi (188.51 km) |
| Markgroningen to Obertraubling | 140.13 mi (225.51 km) |
| Markgroningen to Obertshausen | 81.05 mi (130.44 km) |
| Markgroningen to Oberursel | 92.52 mi (148.90 km) |
| Markgroningen to Ochsenfurt | 68.02 mi (109.47 km) |
| Markgroningen to Ochsenhausen | 69.90 mi (112.49 km) |
| Markgroningen to Ochtrup | 242.68 mi (390.55 km) |
| Markgroningen to Odenthal | 171.01 mi (275.21 km) |
| Markgroningen to Oelde | 206.46 mi (332.26 km) |
| Markgroningen to Oelsnitz | 173.07 mi (278.53 km) |
| Markgroningen to Oer-Erkenschwick | 205.67 mi (330.99 km) |
| Markgroningen to Oerlinghausen | 212.35 mi (341.74 km) |
