| Grumo Nevano to Novi di Modena | 322.22 mi (518.57 km) |
| Grumo Nevano to Novi Ligure | 383.20 mi (616.70 km) |
| Grumo Nevano to Nuoro | 262.16 mi (421.90 km) |
| Grumo Nevano to Occhiobello | 307.19 mi (494.38 km) |
| Grumo Nevano to Oderzo | 346.56 mi (557.73 km) |
| Grumo Nevano to Oggiono | 416.11 mi (669.67 km) |
| Grumo Nevano to Olbia | 248.82 mi (400.43 km) |
| Grumo Nevano to Oleggio | 429.07 mi (690.53 km) |
| Grumo Nevano to Olgiate Comasco | 427.79 mi (688.46 km) |
| Grumo Nevano to Olgiate Olona | 422.61 mi (680.12 km) |
| Grumo Nevano to Omegna | 450.57 mi (725.12 km) |
| Grumo Nevano to Opera | 398.97 mi (642.09 km) |
| Grumo Nevano to Oppeano | 339.36 mi (546.15 km) |
| Grumo Nevano to Orbassano | 441.31 mi (710.22 km) |
| Grumo Nevano to Orbetello | 188.83 mi (303.89 km) |
