| Borgomanero to Oberkirch | 196.59 mi (316.38 km) |
| Borgomanero to Obernburg am Main | 287.75 mi (463.09 km) |
| Borgomanero to Obernkirchen | 454.65 mi (731.69 km) |
| Borgomanero to Oberschleissheim | 228.87 mi (368.33 km) |
| Borgomanero to Oberstdorf | 146.18 mi (235.25 km) |
| Borgomanero to Obertraubling | 284.42 mi (457.73 km) |
| Borgomanero to Obertshausen | 302.19 mi (486.32 km) |
| Borgomanero to Oberursel | 311.19 mi (500.81 km) |
| Borgomanero to Ochsenfurt | 282.87 mi (455.23 km) |
| Borgomanero to Ochsenhausen | 178.20 mi (286.78 km) |
| Borgomanero to Ochtrup | 453.19 mi (729.34 km) |
| Borgomanero to Odenthal | 373.65 mi (601.33 km) |
| Borgomanero to Oelde | 424.01 mi (682.38 km) |
| Borgomanero to Oelsnitz | 367.86 mi (592.01 km) |
| Borgomanero to Oer-Erkenschwick | 414.28 mi (666.72 km) |
