| Horta to Opole | 2,393.49 mi (3,851.96 km) |
| Horta to Orzesze | 2,428.55 mi (3,908.38 km) |
| Horta to Osowa | 2,436.82 mi (3,921.68 km) |
| Horta to Ostroda | 2,492.03 mi (4,010.54 km) |
| Horta to Ostroleka | 2,555.12 mi (4,112.06 km) |
| Horta to Ostrow Mazowiecka | 2,568.29 mi (4,133.27 km) |
| Horta to Ostrow Wielkopolski | 2,391.85 mi (3,849.32 km) |
| Horta to Ostrowiec Swietokrzyski | 2,545.15 mi (4,096.02 km) |
| Horta to Ostrzeszow | 2,395.91 mi (3,855.84 km) |
| Horta to Oswiecim | 2,449.38 mi (3,941.90 km) |
| Horta to Otwock | 2,540.29 mi (4,088.19 km) |
| Horta to Ozarow Mazowiecki | 2,520.72 mi (4,056.71 km) |
| Horta to Ozimek | 2,405.75 mi (3,871.69 km) |
| Horta to Ozorkow | 2,455.67 mi (3,952.01 km) |
| Horta to Pabianice | 2,458.94 mi (3,957.28 km) |
