| Garbagnate Milanese to Oria | 555.85 mi (894.55 km) |
| Garbagnate Milanese to Oristano | 392.63 mi (631.88 km) |
| Garbagnate Milanese to Orta Nova | 443.19 mi (713.24 km) |
| Garbagnate Milanese to Orte | 270.75 mi (435.74 km) |
| Garbagnate Milanese to Ortona | 345.81 mi (556.53 km) |
| Garbagnate Milanese to Orvieto | 248.08 mi (399.25 km) |
| Garbagnate Milanese to Orzinuovi | 43.04 mi (69.27 km) |
| Garbagnate Milanese to Osimo | 260.59 mi (419.38 km) |
| Garbagnate Milanese to Ospitaletto | 48.00 mi (77.25 km) |
| Garbagnate Milanese to Ostuni | 543.22 mi (874.23 km) |
| Garbagnate Milanese to Ottaviano | 424.65 mi (683.41 km) |
| Garbagnate Milanese to Ovada | 68.19 mi (109.73 km) |
| Garbagnate Milanese to Ozieri | 344.95 mi (555.14 km) |
| Garbagnate Milanese to Paceco | 554.13 mi (891.79 km) |
| Garbagnate Milanese to Pachino | 687.14 mi (1,105.84 km) |
