| Somma Vesuviana to Noventa Vicentina | 338.10 mi (544.11 km) |
| Somma Vesuviana to Novi di Modena | 330.42 mi (531.76 km) |
| Somma Vesuviana to Novi Ligure | 392.44 mi (631.58 km) |
| Somma Vesuviana to Nuoro | 270.46 mi (435.26 km) |
| Somma Vesuviana to Occhiobello | 314.85 mi (506.70 km) |
| Somma Vesuviana to Oderzo | 352.90 mi (567.93 km) |
| Somma Vesuviana to Oggiono | 424.65 mi (683.41 km) |
| Somma Vesuviana to Olbia | 257.83 mi (414.94 km) |
| Somma Vesuviana to Oleggio | 437.98 mi (704.86 km) |
| Somma Vesuviana to Olgiate Comasco | 436.49 mi (702.46 km) |
| Somma Vesuviana to Olgiate Olona | 431.41 mi (694.29 km) |
| Somma Vesuviana to Omegna | 459.42 mi (739.37 km) |
| Somma Vesuviana to Opera | 407.77 mi (656.24 km) |
| Somma Vesuviana to Oppeano | 347.11 mi (558.62 km) |
| Somma Vesuviana to Orbassano | 450.74 mi (725.39 km) |
