| Hasselt to Obernburg am Main | 183.67 mi (295.59 km) |
| Hasselt to Obernkirchen | 186.59 mi (300.29 km) |
| Hasselt to Oberschleissheim | 334.67 mi (538.59 km) |
| Hasselt to Oberstdorf | 329.99 mi (531.07 km) |
| Hasselt to Obertraubling | 332.39 mi (534.93 km) |
| Hasselt to Obertshausen | 164.76 mi (265.16 km) |
| Hasselt to Oberursel | 150.73 mi (242.57 km) |
| Hasselt to Ochsenfurt | 226.64 mi (364.75 km) |
| Hasselt to Ochsenhausen | 285.88 mi (460.07 km) |
| Hasselt to Ochtrup | 118.68 mi (191.00 km) |
| Hasselt to Odenthal | 77.67 mi (125.00 km) |
| Hasselt to Oelde | 136.33 mi (219.41 km) |
| Hasselt to Oelsnitz | 300.98 mi (484.37 km) |
| Hasselt to Oer-Erkenschwick | 96.16 mi (154.75 km) |
| Hasselt to Oerlinghausen | 160.18 mi (257.78 km) |
