| Hasselt to Oestrich-Winkel | 133.54 mi (214.91 km) |
| Hasselt to Offenburg | 205.95 mi (331.44 km) |
| Hasselt to Oftersheim | 179.61 mi (289.06 km) |
| Hasselt to Ohrdruf | 235.22 mi (378.55 km) |
| Hasselt to Ohringen | 219.86 mi (353.84 km) |
| Hasselt to Olbernhau | 349.44 mi (562.37 km) |
| Hasselt to Olching | 327.50 mi (527.06 km) |
| Hasselt to Oldenburg | 195.73 mi (315.00 km) |
| Hasselt to Oldenburg in Holstein | 328.92 mi (529.34 km) |
| Hasselt to Olfen | 103.66 mi (166.82 km) |
| Hasselt to Olpe | 108.70 mi (174.93 km) |
| Hasselt to Olsberg | 139.36 mi (224.28 km) |
| Hasselt to Oranienburg | 359.71 mi (578.90 km) |
| Hasselt to Ortenberg | 167.60 mi (269.73 km) |
| Hasselt to Oschatz | 337.76 mi (543.58 km) |
