| Postojna to Karis | 1,060.74 mi (1,707.09 km) |
| Postojna to Karkkila | 1,097.77 mi (1,766.69 km) |
| Postojna to Kauhajoki | 1,193.08 mi (1,920.08 km) |
| Postojna to Kauhava | 1,245.99 mi (2,005.22 km) |
| Postojna to Kauniainen | 1,086.36 mi (1,748.32 km) |
| Postojna to Kemi | 1,432.22 mi (2,304.93 km) |
| Postojna to Kemijarvi | 1,525.74 mi (2,455.44 km) |
| Postojna to Kempele | 1,389.72 mi (2,236.54 km) |
| Postojna to Kerava | 1,103.46 mi (1,775.84 km) |
| Postojna to Keuruu | 1,212.30 mi (1,951.01 km) |
| Postojna to Kiiminki | 1,406.81 mi (2,264.05 km) |
| Postojna to Kirkkonummi | 1,075.18 mi (1,730.33 km) |
| Postojna to Kitee | 1,292.54 mi (2,080.14 km) |
| Postojna to Kiuruvesi | 1,325.00 mi (2,132.39 km) |
| Postojna to Kivisto | 1,094.68 mi (1,761.72 km) |
