| Heckmondwike to Oerlinghausen | 447.44 mi (720.08 km) |
| Heckmondwike to Oestrich-Winkel | 485.13 mi (780.73 km) |
| Heckmondwike to Offenburg | 551.30 mi (887.22 km) |
| Heckmondwike to Oftersheim | 532.14 mi (856.39 km) |
| Heckmondwike to Ohrdruf | 560.00 mi (901.23 km) |
| Heckmondwike to Ohringen | 571.99 mi (920.53 km) |
| Heckmondwike to Olbernhau | 667.87 mi (1,074.84 km) |
| Heckmondwike to Olching | 679.81 mi (1,094.05 km) |
| Heckmondwike to Oldenburg | 408.45 mi (657.33 km) |
| Heckmondwike to Oldenburg in Holstein | 510.72 mi (821.93 km) |
| Heckmondwike to Olfen | 402.81 mi (648.26 km) |
| Heckmondwike to Olpe | 441.53 mi (710.57 km) |
| Heckmondwike to Olsberg | 456.32 mi (734.37 km) |
| Heckmondwike to Oranienburg | 618.88 mi (995.99 km) |
| Heckmondwike to Ortenberg | 510.66 mi (821.82 km) |
