| Horbury to Oerlinghausen | 442.23 mi (711.70 km) |
| Horbury to Oestrich-Winkel | 479.46 mi (771.61 km) |
| Horbury to Offenburg | 545.57 mi (878.02 km) |
| Horbury to Oftersheim | 526.44 mi (847.22 km) |
| Horbury to Ohrdruf | 554.62 mi (892.58 km) |
| Horbury to Ohringen | 566.31 mi (911.39 km) |
| Horbury to Olbernhau | 662.63 mi (1,066.40 km) |
| Horbury to Olching | 674.13 mi (1,084.90 km) |
| Horbury to Oldenburg | 403.73 mi (649.74 km) |
| Horbury to Oldenburg in Holstein | 506.72 mi (815.49 km) |
| Horbury to Olfen | 397.42 mi (639.58 km) |
| Horbury to Olpe | 435.99 mi (701.66 km) |
| Horbury to Olsberg | 450.91 mi (725.67 km) |
| Horbury to Oranienburg | 614.24 mi (988.52 km) |
| Horbury to Ortenberg | 505.08 mi (812.85 km) |
