| Alzano Lombardo to Oria | 537.67 mi (865.30 km) |
| Alzano Lombardo to Oristano | 406.62 mi (654.39 km) |
| Alzano Lombardo to Orta Nova | 426.70 mi (686.71 km) |
| Alzano Lombardo to Orte | 261.65 mi (421.08 km) |
| Alzano Lombardo to Ortona | 329.17 mi (529.74 km) |
| Alzano Lombardo to Orvieto | 239.25 mi (385.04 km) |
| Alzano Lombardo to Orzinuovi | 24.97 mi (40.18 km) |
| Alzano Lombardo to Osimo | 241.29 mi (388.32 km) |
| Alzano Lombardo to Ospitaletto | 20.63 mi (33.21 km) |
| Alzano Lombardo to Ostuni | 524.54 mi (844.16 km) |
| Alzano Lombardo to Ottaviano | 413.12 mi (664.85 km) |
| Alzano Lombardo to Ovada | 92.06 mi (148.16 km) |
| Alzano Lombardo to Ozieri | 357.48 mi (575.31 km) |
| Alzano Lombardo to Paceco | 554.60 mi (892.54 km) |
| Alzano Lombardo to Pachino | 682.16 mi (1,097.82 km) |
