| Garbagnate Milanese to Oberkirch | 209.58 mi (337.29 km) |
| Garbagnate Milanese to Obernburg am Main | 294.55 mi (474.03 km) |
| Garbagnate Milanese to Obernkirchen | 462.19 mi (743.82 km) |
| Garbagnate Milanese to Oberschleissheim | 218.75 mi (352.05 km) |
| Garbagnate Milanese to Oberstdorf | 138.84 mi (223.45 km) |
| Garbagnate Milanese to Obertraubling | 275.16 mi (442.83 km) |
| Garbagnate Milanese to Obertshausen | 310.41 mi (499.56 km) |
| Garbagnate Milanese to Oberursel | 320.49 mi (515.78 km) |
| Garbagnate Milanese to Ochsenfurt | 285.12 mi (458.86 km) |
| Garbagnate Milanese to Ochsenhausen | 177.19 mi (285.17 km) |
| Garbagnate Milanese to Ochtrup | 465.93 mi (749.84 km) |
| Garbagnate Milanese to Odenthal | 387.61 mi (623.80 km) |
| Garbagnate Milanese to Oelde | 434.33 mi (698.99 km) |
| Garbagnate Milanese to Oelsnitz | 363.46 mi (584.93 km) |
| Garbagnate Milanese to Oer-Erkenschwick | 427.28 mi (687.65 km) |
