| Treviglio to Oberkirch | 219.90 mi (353.89 km) |
| Treviglio to Obernburg am Main | 299.12 mi (481.39 km) |
| Treviglio to Obernkirchen | 466.53 mi (750.81 km) |
| Treviglio to Oberschleissheim | 210.29 mi (338.44 km) |
| Treviglio to Oberstdorf | 134.49 mi (216.45 km) |
| Treviglio to Obertraubling | 266.82 mi (429.41 km) |
| Treviglio to Obertshausen | 316.02 mi (508.58 km) |
| Treviglio to Oberursel | 326.89 mi (526.08 km) |
| Treviglio to Ochsenfurt | 286.11 mi (460.45 km) |
| Treviglio to Ochsenhausen | 177.04 mi (284.92 km) |
| Treviglio to Ochtrup | 474.50 mi (763.63 km) |
| Treviglio to Odenthal | 397.43 mi (639.60 km) |
| Treviglio to Oelde | 441.03 mi (709.76 km) |
| Treviglio to Oelsnitz | 358.52 mi (576.98 km) |
| Treviglio to Oer-Erkenschwick | 436.18 mi (701.97 km) |
