| Opatija to Kamenz | 410.06 mi (659.93 km) |
| Opatija to Kamp-Lintfort | 554.70 mi (892.71 km) |
| Opatija to Kandel | 385.92 mi (621.09 km) |
| Opatija to Kappeln | 672.75 mi (1,082.69 km) |
| Opatija to Karben | 424.64 mi (683.39 km) |
| Opatija to Karlsdorf-Neuthard | 376.58 mi (606.05 km) |
| Opatija to Karlsfeld | 240.10 mi (386.40 km) |
| Opatija to Karlsruhe | 375.56 mi (604.41 km) |
| Opatija to Kassel | 468.30 mi (753.65 km) |
| Opatija to Kaufbeuren | 247.80 mi (398.80 km) |
| Opatija to Kaufering | 249.56 mi (401.63 km) |
| Opatija to Kaufungen | 463.63 mi (746.14 km) |
| Opatija to Kehl | 378.49 mi (609.12 km) |
| Opatija to Kelheim | 272.70 mi (438.87 km) |
| Opatija to Kelkheim (Taunus) | 428.80 mi (690.08 km) |
