| Cazzago San Martino to Oria | 520.01 mi (836.87 km) |
| Cazzago San Martino to Oristano | 398.84 mi (641.87 km) |
| Cazzago San Martino to Orta Nova | 409.16 mi (658.48 km) |
| Cazzago San Martino to Orte | 245.46 mi (395.03 km) |
| Cazzago San Martino to Ortona | 311.64 mi (501.53 km) |
| Cazzago San Martino to Orvieto | 223.19 mi (359.18 km) |
| Cazzago San Martino to Orzinuovi | 13.33 mi (21.45 km) |
| Cazzago San Martino to Osimo | 223.61 mi (359.87 km) |
| Cazzago San Martino to Ospitaletto | 2.93 mi (4.72 km) |
| Cazzago San Martino to Ostuni | 506.85 mi (815.70 km) |
| Cazzago San Martino to Ottaviano | 396.25 mi (637.70 km) |
| Cazzago San Martino to Ovada | 93.62 mi (150.66 km) |
| Cazzago San Martino to Ozieri | 349.07 mi (561.78 km) |
| Cazzago San Martino to Paceco | 540.79 mi (870.31 km) |
| Cazzago San Martino to Pachino | 666.62 mi (1,072.83 km) |
