| Castel Mella to Novi di Modena | 55.62 mi (89.51 km) |
| Castel Mella to Novi Ligure | 83.92 mi (135.06 km) |
| Castel Mella to Nuoro | 360.50 mi (580.17 km) |
| Castel Mella to Occhiobello | 80.31 mi (129.25 km) |
| Castel Mella to Oderzo | 114.82 mi (184.79 km) |
| Castel Mella to Oggiono | 43.32 mi (69.72 km) |
| Castel Mella to Olbia | 318.36 mi (512.35 km) |
| Castel Mella to Oleggio | 73.71 mi (118.62 km) |
| Castel Mella to Olgiate Comasco | 60.42 mi (97.23 km) |
| Castel Mella to Olgiate Olona | 61.96 mi (99.71 km) |
| Castel Mella to Omegna | 88.09 mi (141.77 km) |
| Castel Mella to Opera | 45.96 mi (73.96 km) |
| Castel Mella to Oppeano | 52.00 mi (83.68 km) |
| Castel Mella to Orbassano | 131.57 mi (211.75 km) |
| Castel Mella to Orbetello | 217.96 mi (350.78 km) |
