| Karhula to Orzesze | 783.73 mi (1,261.29 km) |
| Karhula to Osowa | 524.36 mi (843.87 km) |
| Karhula to Ostroda | 537.96 mi (865.77 km) |
| Karhula to Ostroleka | 552.87 mi (889.76 km) |
| Karhula to Ostrow Mazowiecka | 565.95 mi (910.80 km) |
| Karhula to Ostrow Wielkopolski | 704.84 mi (1,134.34 km) |
| Karhula to Ostrowiec Swietokrzyski | 695.62 mi (1,119.50 km) |
| Karhula to Ostrzeszow | 717.15 mi (1,154.14 km) |
| Karhula to Oswiecim | 783.75 mi (1,261.33 km) |
| Karhula to Otwock | 619.07 mi (996.30 km) |
| Karhula to Ozarow Mazowiecki | 618.97 mi (996.13 km) |
| Karhula to Ozimek | 759.05 mi (1,221.57 km) |
| Karhula to Ozorkow | 658.70 mi (1,060.07 km) |
| Karhula to Pabianice | 677.21 mi (1,089.86 km) |
| Karhula to Parczew | 633.14 mi (1,018.93 km) |
