| Dornbirn to Obernburg am Main | 169.72 mi (273.14 km) |
| Dornbirn to Obernkirchen | 336.26 mi (541.16 km) |
| Dornbirn to Oberschleissheim | 102.05 mi (164.23 km) |
| Dornbirn to Oberstdorf | 24.75 mi (39.83 km) |
| Dornbirn to Obertraubling | 154.42 mi (248.51 km) |
| Dornbirn to Obertshausen | 187.80 mi (302.23 km) |
| Dornbirn to Oberursel | 199.79 mi (321.53 km) |
| Dornbirn to Ochsenfurt | 154.98 mi (249.42 km) |
| Dornbirn to Ochsenhausen | 46.22 mi (74.38 km) |
| Dornbirn to Ochtrup | 349.95 mi (563.19 km) |
| Dornbirn to Odenthal | 276.65 mi (445.23 km) |
| Dornbirn to Oelde | 313.43 mi (504.41 km) |
| Dornbirn to Oelsnitz | 234.50 mi (377.39 km) |
| Dornbirn to Oer-Erkenschwick | 312.68 mi (503.21 km) |
| Dornbirn to Oerlinghausen | 318.07 mi (511.89 km) |
