| Harlau to Opole | 463.66 mi (746.19 km) |
| Harlau to Orzesze | 416.10 mi (669.65 km) |
| Harlau to Osowa | 606.56 mi (976.17 km) |
| Harlau to Ostroda | 529.28 mi (851.79 km) |
| Harlau to Ostroleka | 455.30 mi (732.73 km) |
| Harlau to Ostrow Mazowiecka | 432.28 mi (695.69 km) |
| Harlau to Ostrow Wielkopolski | 500.79 mi (805.94 km) |
| Harlau to Ostrowiec Swietokrzyski | 347.13 mi (558.66 km) |
| Harlau to Ostrzeszow | 488.11 mi (785.54 km) |
| Harlau to Oswiecim | 393.87 mi (633.87 km) |
| Harlau to Otwock | 410.11 mi (660.00 km) |
| Harlau to Ozarow Mazowiecki | 428.29 mi (689.26 km) |
| Harlau to Ozimek | 452.82 mi (728.75 km) |
| Harlau to Ozorkow | 462.77 mi (744.76 km) |
| Harlau to Pabianice | 445.73 mi (717.33 km) |
