| Opatija to Koscielisko | 377.83 mi (608.05 km) |
| Opatija to Koscierzyna | 628.56 mi (1,011.56 km) |
| Opatija to Kostrzyn | 505.51 mi (813.54 km) |
| Opatija to Kostrzyn nad Odra | 501.55 mi (807.16 km) |
| Opatija to Koszalin | 618.31 mi (995.07 km) |
| Opatija to Kowary | 383.70 mi (617.51 km) |
| Opatija to Kozienice | 544.73 mi (876.66 km) |
| Opatija to Kozuchow | 447.30 mi (719.86 km) |
| Opatija to Kozy | 386.04 mi (621.28 km) |
| Opatija to Krakow | 418.61 mi (673.68 km) |
| Opatija to Krapkowice | 393.13 mi (632.69 km) |
| Opatija to Krasnik | 530.58 mi (853.89 km) |
| Opatija to Krasnystaw | 564.98 mi (909.24 km) |
| Opatija to Krosno | 459.21 mi (739.02 km) |
| Opatija to Krosno Odrzanskie | 464.35 mi (747.30 km) |
