| Bad Oeynhausen to Obernburg am Main | 163.73 mi (263.50 km) |
| Bad Oeynhausen to Obernkirchen | 14.21 mi (22.87 km) |
| Bad Oeynhausen to Oberschleissheim | 299.01 mi (481.21 km) |
| Bad Oeynhausen to Oberstdorf | 337.47 mi (543.10 km) |
| Bad Oeynhausen to Obertraubling | 267.80 mi (430.99 km) |
| Bad Oeynhausen to Obertshausen | 147.40 mi (237.22 km) |
| Bad Oeynhausen to Oberursel | 138.30 mi (222.57 km) |
| Bad Oeynhausen to Ochsenfurt | 184.62 mi (297.11 km) |
| Bad Oeynhausen to Ochsenhausen | 289.69 mi (466.21 km) |
| Bad Oeynhausen to Ochtrup | 68.16 mi (109.70 km) |
| Bad Oeynhausen to Odenthal | 108.22 mi (174.17 km) |
| Bad Oeynhausen to Oelde | 37.49 mi (60.34 km) |
| Bad Oeynhausen to Oelsnitz | 190.56 mi (306.68 km) |
| Bad Oeynhausen to Oer-Erkenschwick | 76.44 mi (123.02 km) |
| Bad Oeynhausen to Oerlinghausen | 17.08 mi (27.49 km) |
