| Aosta to Oberkirch | 196.79 mi (316.70 km) |
| Aosta to Obernburg am Main | 296.10 mi (476.52 km) |
| Aosta to Obernkirchen | 458.68 mi (738.17 km) |
| Aosta to Oberschleissheim | 265.17 mi (426.76 km) |
| Aosta to Oberstdorf | 182.23 mi (293.27 km) |
| Aosta to Obertraubling | 318.36 mi (512.36 km) |
| Aosta to Obertshausen | 307.52 mi (494.91 km) |
| Aosta to Oberursel | 314.29 mi (505.80 km) |
| Aosta to Ochsenfurt | 299.27 mi (481.62 km) |
| Aosta to Ochsenhausen | 203.80 mi (327.99 km) |
| Aosta to Ochtrup | 447.23 mi (719.75 km) |
| Aosta to Odenthal | 366.31 mi (589.52 km) |
| Aosta to Oelde | 423.17 mi (681.02 km) |
| Aosta to Oelsnitz | 393.31 mi (632.98 km) |
| Aosta to Oer-Erkenschwick | 408.28 mi (657.06 km) |
