| Viadana to Oerlinghausen | 493.73 mi (794.59 km) |
| Viadana to Oestrich-Winkel | 369.71 mi (594.99 km) |
| Viadana to Offenburg | 273.55 mi (440.23 km) |
| Viadana to Oftersheim | 320.20 mi (515.31 km) |
| Viadana to Ohrdruf | 407.87 mi (656.40 km) |
| Viadana to Ohringen | 299.13 mi (481.40 km) |
| Viadana to Olbernhau | 417.46 mi (671.83 km) |
| Viadana to Olching | 229.30 mi (369.03 km) |
| Viadana to Oldenburg | 577.20 mi (928.92 km) |
| Viadana to Oldenburg in Holstein | 647.83 mi (1,042.59 km) |
| Viadana to Olfen | 490.66 mi (789.64 km) |
| Viadana to Olpe | 438.67 mi (705.97 km) |
| Viadana to Olsberg | 453.58 mi (729.97 km) |
| Viadana to Oranienburg | 554.67 mi (892.65 km) |
| Viadana to Ortenberg | 381.24 mi (613.55 km) |
