| Hjorring to Oestrich-Winkel | 521.95 mi (839.99 km) |
| Hjorring to Offenburg | 627.37 mi (1,009.65 km) |
| Hjorring to Oftersheim | 562.09 mi (904.60 km) |
| Hjorring to Ohrdruf | 459.47 mi (739.44 km) |
| Hjorring to Ohringen | 571.30 mi (919.42 km) |
| Hjorring to Olbernhau | 488.74 mi (786.55 km) |
| Hjorring to Olching | 642.44 mi (1,033.91 km) |
| Hjorring to Oldenburg | 306.42 mi (493.14 km) |
| Hjorring to Oldenburg in Holstein | 221.36 mi (356.24 km) |
| Hjorring to Olfen | 410.39 mi (660.46 km) |
| Hjorring to Olpe | 453.74 mi (730.23 km) |
| Hjorring to Olsberg | 426.66 mi (686.64 km) |
| Hjorring to Oranienburg | 349.79 mi (562.93 km) |
| Hjorring to Ortenberg | 492.53 mi (792.66 km) |
| Hjorring to Oschatz | 443.91 mi (714.40 km) |
