| Opatija to Kalisz | 476.19 mi (766.35 km) |
| Opatija to Kamien Pomorski | 597.11 mi (960.95 km) |
| Opatija to Kamienna Gora | 384.94 mi (619.50 km) |
| Opatija to Karczew | 563.28 mi (906.51 km) |
| Opatija to Kartuzy | 645.42 mi (1,038.70 km) |
| Opatija to Katowice | 404.92 mi (651.65 km) |
| Opatija to Kedzierzyn-Kozle | 390.83 mi (628.99 km) |
| Opatija to Kepno | 444.44 mi (715.26 km) |
| Opatija to Ketrzyn | 681.60 mi (1,096.94 km) |
| Opatija to Kety | 389.68 mi (627.13 km) |
| Opatija to Kielce | 481.24 mi (774.48 km) |
| Opatija to Kielczow | 422.46 mi (679.88 km) |
| Opatija to Klobuck | 440.80 mi (709.39 km) |
| Opatija to Klodzko | 368.77 mi (593.47 km) |
| Opatija to Kluczbork | 429.94 mi (691.93 km) |
