| Harlingen to Kobarid | 600.61 mi (966.59 km) |
| Harlingen to Kobilje | 661.29 mi (1,064.24 km) |
| Harlingen to Kocevje | 670.06 mi (1,078.36 km) |
| Harlingen to Komen | 629.96 mi (1,013.82 km) |
| Harlingen to Komenda | 629.51 mi (1,013.10 km) |
| Harlingen to Koper | 644.96 mi (1,037.96 km) |
| Harlingen to Kostanjevica na Krki | 675.12 mi (1,086.50 km) |
| Harlingen to Kostel | 679.03 mi (1,092.80 km) |
| Harlingen to Kozje | 666.79 mi (1,073.10 km) |
| Harlingen to Kranj | 623.16 mi (1,002.87 km) |
| Harlingen to Kranjska Gora | 592.80 mi (954.02 km) |
| Harlingen to Krizevci | 659.17 mi (1,060.84 km) |
| Harlingen to Krsko | 671.21 mi (1,080.21 km) |
| Harlingen to Kuzma | 643.64 mi (1,035.84 km) |
| Harlingen to Lasko | 652.75 mi (1,050.50 km) |
