| Horn-Bad Meinberg to Orzesze | 441.40 mi (710.36 km) |
| Horn-Bad Meinberg to Osowa | 430.77 mi (693.25 km) |
| Horn-Bad Meinberg to Ostroda | 475.88 mi (765.86 km) |
| Horn-Bad Meinberg to Ostroleka | 535.82 mi (862.32 km) |
| Horn-Bad Meinberg to Ostrow Mazowiecka | 548.85 mi (883.29 km) |
| Horn-Bad Meinberg to Ostrow Wielkopolski | 378.52 mi (609.17 km) |
| Horn-Bad Meinberg to Ostrowiec Swietokrzyski | 539.18 mi (867.73 km) |
| Horn-Bad Meinberg to Ostrzeszow | 385.50 mi (620.40 km) |
| Horn-Bad Meinberg to Oswiecim | 463.68 mi (746.21 km) |
| Horn-Bad Meinberg to Otwock | 522.84 mi (841.43 km) |
| Horn-Bad Meinberg to Ozarow Mazowiecki | 502.77 mi (809.13 km) |
| Horn-Bad Meinberg to Ozimek | 407.99 mi (656.59 km) |
| Horn-Bad Meinberg to Ozorkow | 439.25 mi (706.91 km) |
| Horn-Bad Meinberg to Pabianice | 445.32 mi (716.67 km) |
| Horn-Bad Meinberg to Parczew | 593.81 mi (955.65 km) |
