| Widnau to Oberkirch | 106.19 mi (170.89 km) |
| Widnau to Obernburg am Main | 170.10 mi (273.75 km) |
| Widnau to Obernkirchen | 337.04 mi (542.41 km) |
| Widnau to Oberschleissheim | 107.21 mi (172.54 km) |
| Widnau to Oberstdorf | 30.21 mi (48.62 km) |
| Widnau to Obertraubling | 159.14 mi (256.12 km) |
| Widnau to Obertshausen | 187.84 mi (302.30 km) |
| Widnau to Oberursel | 199.58 mi (321.19 km) |
| Widnau to Ochsenfurt | 156.74 mi (252.25 km) |
| Widnau to Ochsenhausen | 48.71 mi (78.40 km) |
| Widnau to Ochtrup | 349.42 mi (562.33 km) |
| Widnau to Odenthal | 275.51 mi (443.39 km) |
| Widnau to Oelde | 313.43 mi (504.41 km) |
| Widnau to Oelsnitz | 238.06 mi (383.12 km) |
| Widnau to Oer-Erkenschwick | 311.96 mi (502.04 km) |
