| Horsell to Oerlinghausen | 397.82 mi (640.22 km) |
| Horsell to Oestrich-Winkel | 385.79 mi (620.87 km) |
| Horsell to Offenburg | 426.31 mi (686.08 km) |
| Horsell to Oftersheim | 425.00 mi (683.97 km) |
| Horsell to Ohrdruf | 491.01 mi (790.20 km) |
| Horsell to Ohringen | 467.66 mi (752.62 km) |
| Horsell to Olbernhau | 605.03 mi (973.70 km) |
| Horsell to Olching | 571.68 mi (920.03 km) |
| Horsell to Oldenburg | 391.63 mi (630.27 km) |
| Horsell to Oldenburg in Holstein | 519.40 mi (835.90 km) |
| Horsell to Olfen | 342.44 mi (551.10 km) |
| Horsell to Olpe | 364.11 mi (585.98 km) |
| Horsell to Olsberg | 390.17 mi (627.91 km) |
| Horsell to Oranienburg | 593.68 mi (955.44 km) |
| Horsell to Ortenberg | 424.61 mi (683.35 km) |
