| Viadana to Oberkirch | 274.58 mi (441.89 km) |
| Viadana to Obernburg am Main | 345.53 mi (556.08 km) |
| Viadana to Obernkirchen | 511.13 mi (822.58 km) |
| Viadana to Oberschleissheim | 234.93 mi (378.08 km) |
| Viadana to Oberstdorf | 171.94 mi (276.72 km) |
| Viadana to Obertraubling | 289.67 mi (466.17 km) |
| Viadana to Obertshausen | 363.74 mi (585.38 km) |
| Viadana to Oberursel | 375.63 mi (604.51 km) |
| Viadana to Ochsenfurt | 327.04 mi (526.32 km) |
| Viadana to Ochsenhausen | 219.03 mi (352.49 km) |
| Viadana to Ochtrup | 525.31 mi (845.41 km) |
| Viadana to Odenthal | 450.20 mi (724.53 km) |
| Viadana to Oelde | 489.37 mi (787.56 km) |
| Viadana to Oelsnitz | 386.95 mi (622.74 km) |
| Viadana to Oer-Erkenschwick | 487.60 mi (784.72 km) |
