| Mortara to Novi di Modena | 107.81 mi (173.50 km) |
| Mortara to Novi Ligure | 33.96 mi (54.65 km) |
| Mortara to Nuoro | 342.14 mi (550.61 km) |
| Mortara to Occhiobello | 139.96 mi (225.24 km) |
| Mortara to Oderzo | 184.86 mi (297.51 km) |
| Mortara to Oggiono | 46.92 mi (75.51 km) |
| Mortara to Olbia | 301.78 mi (485.67 km) |
| Mortara to Oleggio | 24.84 mi (39.97 km) |
| Mortara to Olgiate Comasco | 38.31 mi (61.66 km) |
| Mortara to Olgiate Olona | 27.26 mi (43.87 km) |
| Mortara to Omegna | 46.46 mi (74.77 km) |
| Mortara to Opera | 24.47 mi (39.39 km) |
| Mortara to Oppeano | 118.36 mi (190.48 km) |
| Mortara to Orbassano | 61.47 mi (98.92 km) |
| Mortara to Orbetello | 229.69 mi (369.65 km) |
