| Postojna to Kamen | 500.27 mi (805.11 km) |
| Postojna to Kamenz | 379.41 mi (610.61 km) |
| Postojna to Kamp-Lintfort | 528.00 mi (849.74 km) |
| Postojna to Kandel | 362.07 mi (582.69 km) |
| Postojna to Kappeln | 642.15 mi (1,033.45 km) |
| Postojna to Karben | 397.49 mi (639.70 km) |
| Postojna to Karlsdorf-Neuthard | 352.07 mi (566.59 km) |
| Postojna to Karlsfeld | 212.57 mi (342.10 km) |
| Postojna to Karlsruhe | 351.61 mi (565.86 km) |
| Postojna to Kassel | 439.15 mi (706.74 km) |
| Postojna to Kaufbeuren | 223.47 mi (359.63 km) |
| Postojna to Kaufering | 223.81 mi (360.19 km) |
| Postojna to Kaufungen | 434.41 mi (699.12 km) |
| Postojna to Kehl | 356.84 mi (574.27 km) |
| Postojna to Kelheim | 243.21 mi (391.41 km) |
