| Ottweiler to Oberkirch | 71.03 mi (114.31 km) |
| Ottweiler to Obernburg am Main | 94.27 mi (151.72 km) |
| Ottweiler to Obernkirchen | 217.68 mi (350.33 km) |
| Ottweiler to Oberschleissheim | 214.53 mi (345.25 km) |
| Ottweiler to Oberstdorf | 196.64 mi (316.46 km) |
| Ottweiler to Obertraubling | 227.55 mi (366.20 km) |
| Ottweiler to Obertshausen | 88.78 mi (142.88 km) |
| Ottweiler to Oberursel | 85.43 mi (137.49 km) |
| Ottweiler to Ochsenfurt | 131.56 mi (211.73 km) |
| Ottweiler to Ochsenhausen | 155.14 mi (249.68 km) |
| Ottweiler to Ochtrup | 196.15 mi (315.68 km) |
| Ottweiler to Odenthal | 115.17 mi (185.35 km) |
| Ottweiler to Oelde | 175.79 mi (282.91 km) |
| Ottweiler to Oelsnitz | 234.03 mi (376.64 km) |
| Ottweiler to Oer-Erkenschwick | 157.27 mi (253.09 km) |
