| San Sebastiano al Vesuvio to Oerlinghausen | 815.15 mi (1,311.85 km) |
| San Sebastiano al Vesuvio to Oestrich-Winkel | 703.99 mi (1,132.97 km) |
| San Sebastiano al Vesuvio to Offenburg | 614.44 mi (988.84 km) |
| San Sebastiano al Vesuvio to Oftersheim | 653.33 mi (1,051.43 km) |
| San Sebastiano al Vesuvio to Ohrdruf | 712.16 mi (1,146.11 km) |
| San Sebastiano al Vesuvio to Ohringen | 624.71 mi (1,005.37 km) |
| San Sebastiano al Vesuvio to Olbernhau | 681.23 mi (1,096.33 km) |
| San Sebastiano al Vesuvio to Olching | 530.59 mi (853.90 km) |
| San Sebastiano al Vesuvio to Oldenburg | 897.83 mi (1,444.91 km) |
| San Sebastiano al Vesuvio to Oldenburg in Holstein | 944.23 mi (1,519.58 km) |
| San Sebastiano al Vesuvio to Olfen | 821.69 mi (1,322.39 km) |
| San Sebastiano al Vesuvio to Olpe | 769.75 mi (1,238.79 km) |
| San Sebastiano al Vesuvio to Olsberg | 778.77 mi (1,253.31 km) |
| San Sebastiano al Vesuvio to Oranienburg | 825.37 mi (1,328.31 km) |
| San Sebastiano al Vesuvio to Ortenberg | 705.82 mi (1,135.90 km) |
