| Gallarate to Oberkirch | 200.96 mi (323.42 km) |
| Gallarate to Obernburg am Main | 288.93 mi (464.99 km) |
| Gallarate to Obernkirchen | 456.36 mi (734.44 km) |
| Gallarate to Oberschleissheim | 221.40 mi (356.31 km) |
| Gallarate to Oberstdorf | 139.76 mi (224.92 km) |
| Gallarate to Obertraubling | 277.46 mi (446.52 km) |
| Gallarate to Obertshausen | 304.14 mi (489.47 km) |
| Gallarate to Oberursel | 313.73 mi (504.90 km) |
| Gallarate to Ochsenfurt | 281.66 mi (453.28 km) |
| Gallarate to Ochsenhausen | 175.07 mi (281.74 km) |
| Gallarate to Ochtrup | 457.69 mi (736.59 km) |
| Gallarate to Odenthal | 378.78 mi (609.59 km) |
| Gallarate to Oelde | 427.19 mi (687.50 km) |
| Gallarate to Oelsnitz | 363.37 mi (584.78 km) |
| Gallarate to Oer-Erkenschwick | 418.91 mi (674.17 km) |
