| Opatija to Kranenburg | 584.74 mi (941.04 km) |
| Opatija to Krefeld | 545.32 mi (877.61 km) |
| Opatija to Kressbronn am Bodensee | 272.81 mi (439.05 km) |
| Opatija to Kreuzau | 519.13 mi (835.46 km) |
| Opatija to Kreuztal | 486.17 mi (782.42 km) |
| Opatija to Kriftel | 425.46 mi (684.71 km) |
| Opatija to Kronach | 366.01 mi (589.04 km) |
| Opatija to Kronberg | 429.69 mi (691.52 km) |
| Opatija to Kronshagen | 649.32 mi (1,044.97 km) |
| Opatija to Krumbach | 274.21 mi (441.30 km) |
| Opatija to Kulmbach | 355.22 mi (571.67 km) |
| Opatija to Kummersbruck | 303.91 mi (489.10 km) |
| Opatija to Kunzell | 418.04 mi (672.77 km) |
| Opatija to Kunzelsau | 348.09 mi (560.20 km) |
| Opatija to Kurort Steinbach-Hallenberg | 408.89 mi (658.04 km) |
