| Horsell to Opole | 803.40 mi (1,292.95 km) |
| Horsell to Orzesze | 845.86 mi (1,361.28 km) |
| Horsell to Osowa | 819.17 mi (1,318.33 km) |
| Horsell to Ostroda | 875.35 mi (1,408.74 km) |
| Horsell to Ostroleka | 940.97 mi (1,514.34 km) |
| Horsell to Ostrow Mazowiecka | 955.55 mi (1,537.82 km) |
| Horsell to Ostrow Wielkopolski | 788.89 mi (1,269.59 km) |
| Horsell to Ostrowiec Swietokrzyski | 949.07 mi (1,527.38 km) |
| Horsell to Ostrzeszow | 795.62 mi (1,280.43 km) |
| Horsell to Oswiecim | 867.97 mi (1,396.86 km) |
| Horsell to Otwock | 932.33 mi (1,500.44 km) |
| Horsell to Ozarow Mazowiecki | 912.03 mi (1,467.77 km) |
| Horsell to Ozimek | 815.37 mi (1,312.21 km) |
| Horsell to Ozorkow | 849.29 mi (1,366.80 km) |
| Horsell to Pabianice | 855.69 mi (1,377.09 km) |
