| Garbagnate Milanese to Oegstgeest | 502.05 mi (807.97 km) |
| Garbagnate Milanese to Oirschot | 444.14 mi (714.78 km) |
| Garbagnate Milanese to Oisterwijk | 451.16 mi (726.07 km) |
| Garbagnate Milanese to Oldebroek | 496.15 mi (798.47 km) |
| Garbagnate Milanese to Oldenzaal | 475.70 mi (765.56 km) |
| Garbagnate Milanese to Ommen | 494.34 mi (795.57 km) |
| Garbagnate Milanese to Oosterend | 530.68 mi (854.05 km) |
| Garbagnate Milanese to Oosterhout | 461.22 mi (742.27 km) |
| Garbagnate Milanese to Oosterwolde | 527.30 mi (848.62 km) |
| Garbagnate Milanese to Oostzaan | 510.28 mi (821.22 km) |
| Garbagnate Milanese to Opmeer | 526.16 mi (846.78 km) |
| Garbagnate Milanese to Oss | 457.40 mi (736.12 km) |
| Garbagnate Milanese to Oud-Beijerland | 480.84 mi (773.83 km) |
| Garbagnate Milanese to Oudenbosch | 464.48 mi (747.51 km) |
| Garbagnate Milanese to Oudewater | 484.32 mi (779.43 km) |
