| Grezzana to Novi di Modena | 43.43 mi (69.90 km) |
| Grezzana to Novi Ligure | 120.67 mi (194.21 km) |
| Grezzana to Nuoro | 369.22 mi (594.20 km) |
| Grezzana to Occhiobello | 49.45 mi (79.58 km) |
| Grezzana to Oderzo | 73.59 mi (118.44 km) |
| Grezzana to Oggiono | 82.58 mi (132.90 km) |
| Grezzana to Olbia | 326.86 mi (526.03 km) |
| Grezzana to Oleggio | 115.44 mi (185.79 km) |
| Grezzana to Olgiate Comasco | 100.71 mi (162.08 km) |
| Grezzana to Olgiate Olona | 103.49 mi (166.55 km) |
| Grezzana to Omegna | 128.39 mi (206.62 km) |
| Grezzana to Opera | 87.73 mi (141.19 km) |
| Grezzana to Oppeano | 17.01 mi (27.38 km) |
| Grezzana to Orbassano | 172.84 mi (278.15 km) |
| Grezzana to Orbetello | 212.84 mi (342.54 km) |
