| Horw to Opole | 504.24 mi (811.49 km) |
| Horw to Orzesze | 523.12 mi (841.88 km) |
| Horw to Osowa | 676.48 mi (1,088.68 km) |
| Horw to Ostroda | 689.06 mi (1,108.94 km) |
| Horw to Ostroleka | 719.60 mi (1,158.09 km) |
| Horw to Ostrow Mazowiecka | 722.75 mi (1,163.15 km) |
| Horw to Ostrow Wielkopolski | 533.54 mi (858.64 km) |
| Horw to Ostrowiec Swietokrzyski | 650.96 mi (1,047.62 km) |
| Horw to Ostrzeszow | 529.22 mi (851.69 km) |
| Horw to Oswiecim | 540.24 mi (869.43 km) |
| Horw to Otwock | 677.46 mi (1,090.27 km) |
| Horw to Ozarow Mazowiecki | 662.98 mi (1,066.97 km) |
| Horw to Ozimek | 515.45 mi (829.54 km) |
| Horw to Ozorkow | 598.35 mi (962.94 km) |
| Horw to Pabianice | 591.30 mi (951.60 km) |
