| Borgosesia to Oberkirch | 194.80 mi (313.50 km) |
| Borgosesia to Obernburg am Main | 287.77 mi (463.12 km) |
| Borgosesia to Obernkirchen | 454.17 mi (730.92 km) |
| Borgosesia to Oberschleissheim | 234.12 mi (376.78 km) |
| Borgosesia to Oberstdorf | 151.06 mi (243.11 km) |
| Borgosesia to Obertraubling | 289.30 mi (465.58 km) |
| Borgosesia to Obertshausen | 301.70 mi (485.54 km) |
| Borgosesia to Oberursel | 310.33 mi (499.42 km) |
| Borgosesia to Ochsenfurt | 284.35 mi (457.61 km) |
| Borgosesia to Ochsenhausen | 181.07 mi (291.40 km) |
| Borgosesia to Ochtrup | 450.98 mi (725.78 km) |
| Borgosesia to Odenthal | 371.10 mi (597.23 km) |
| Borgosesia to Oelde | 422.65 mi (680.19 km) |
| Borgosesia to Oelsnitz | 371.20 mi (597.39 km) |
| Borgosesia to Oer-Erkenschwick | 412.02 mi (663.08 km) |
