| Fagnano Olona to Oberkirch | 201.46 mi (324.21 km) |
| Fagnano Olona to Obernburg am Main | 288.63 mi (464.50 km) |
| Fagnano Olona to Obernkirchen | 456.14 mi (734.08 km) |
| Fagnano Olona to Oberschleissheim | 219.22 mi (352.80 km) |
| Fagnano Olona to Oberstdorf | 137.87 mi (221.88 km) |
| Fagnano Olona to Obertraubling | 275.36 mi (443.15 km) |
| Fagnano Olona to Obertshausen | 304.01 mi (489.26 km) |
| Fagnano Olona to Oberursel | 313.73 mi (504.91 km) |
| Fagnano Olona to Ochsenfurt | 280.82 mi (451.93 km) |
| Fagnano Olona to Ochsenhausen | 173.87 mi (279.82 km) |
| Fagnano Olona to Ochtrup | 458.12 mi (737.28 km) |
| Fagnano Olona to Odenthal | 379.37 mi (610.54 km) |
| Fagnano Olona to Oelde | 427.31 mi (687.70 km) |
| Fagnano Olona to Oelsnitz | 361.78 mi (582.23 km) |
| Fagnano Olona to Oer-Erkenschwick | 419.37 mi (674.92 km) |
