| Somma Vesuviana to Oerlinghausen | 813.67 mi (1,309.48 km) |
| Somma Vesuviana to Oestrich-Winkel | 703.00 mi (1,131.38 km) |
| Somma Vesuviana to Offenburg | 613.84 mi (987.88 km) |
| Somma Vesuviana to Oftersheim | 652.32 mi (1,049.81 km) |
| Somma Vesuviana to Ohrdruf | 710.35 mi (1,143.20 km) |
| Somma Vesuviana to Ohringen | 623.48 mi (1,003.40 km) |
| Somma Vesuviana to Olbernhau | 678.78 mi (1,092.39 km) |
| Somma Vesuviana to Olching | 528.97 mi (851.29 km) |
| Somma Vesuviana to Oldenburg | 896.29 mi (1,442.44 km) |
| Somma Vesuviana to Oldenburg in Holstein | 942.11 mi (1,516.17 km) |
| Somma Vesuviana to Olfen | 820.52 mi (1,320.50 km) |
| Somma Vesuviana to Olpe | 768.60 mi (1,236.94 km) |
| Somma Vesuviana to Olsberg | 777.43 mi (1,251.15 km) |
| Somma Vesuviana to Oranienburg | 822.89 mi (1,324.31 km) |
| Somma Vesuviana to Ortenberg | 704.49 mi (1,133.77 km) |
