| Mohnesee to Obernburg am Main | 122.67 mi (197.41 km) |
| Mohnesee to Obernkirchen | 67.88 mi (109.24 km) |
| Mohnesee to Oberschleissheim | 271.42 mi (436.81 km) |
| Mohnesee to Oberstdorf | 298.33 mi (480.11 km) |
| Mohnesee to Obertraubling | 249.70 mi (401.85 km) |
| Mohnesee to Obertshausen | 103.40 mi (166.41 km) |
| Mohnesee to Oberursel | 91.40 mi (147.09 km) |
| Mohnesee to Ochsenfurt | 153.23 mi (246.60 km) |
| Mohnesee to Ochsenhausen | 250.04 mi (402.40 km) |
| Mohnesee to Ochtrup | 63.37 mi (101.98 km) |
| Mohnesee to Odenthal | 54.25 mi (87.30 km) |
| Mohnesee to Oelde | 23.33 mi (37.55 km) |
| Mohnesee to Oelsnitz | 190.80 mi (307.06 km) |
| Mohnesee to Oer-Erkenschwick | 39.11 mi (62.95 km) |
| Mohnesee to Oerlinghausen | 39.81 mi (64.07 km) |
