| San Severino Marche to Oerlinghausen | 638.93 mi (1,028.27 km) |
| San Severino Marche to Oestrich-Winkel | 528.13 mi (849.94 km) |
| San Severino Marche to Offenburg | 440.97 mi (709.67 km) |
| San Severino Marche to Oftersheim | 477.41 mi (768.32 km) |
| San Severino Marche to Ohrdruf | 537.44 mi (864.93 km) |
| San Severino Marche to Ohringen | 448.32 mi (721.50 km) |
| San Severino Marche to Olbernhau | 513.95 mi (827.13 km) |
| San Severino Marche to Olching | 354.97 mi (571.27 km) |
| San Severino Marche to Oldenburg | 721.76 mi (1,161.56 km) |
| San Severino Marche to Oldenburg in Holstein | 771.93 mi (1,242.30 km) |
| San Severino Marche to Olfen | 645.36 mi (1,038.61 km) |
| San Severino Marche to Olpe | 593.46 mi (955.08 km) |
| San Severino Marche to Olsberg | 602.38 mi (969.43 km) |
| San Severino Marche to Oranienburg | 658.15 mi (1,059.20 km) |
| San Severino Marche to Ortenberg | 529.41 mi (852.00 km) |
