| Portalegre to Kobarid | 1,162.73 mi (1,871.23 km) |
| Portalegre to Kobilje | 1,299.98 mi (2,092.12 km) |
| Portalegre to Kocevje | 1,211.42 mi (1,949.59 km) |
| Portalegre to Komen | 1,162.51 mi (1,870.87 km) |
| Portalegre to Komenda | 1,206.12 mi (1,941.06 km) |
| Portalegre to Koper | 1,157.01 mi (1,862.03 km) |
| Portalegre to Kostanjevica na Krki | 1,241.17 mi (1,997.47 km) |
| Portalegre to Kostel | 1,211.72 mi (1,950.07 km) |
| Portalegre to Kozje | 1,251.09 mi (2,013.43 km) |
| Portalegre to Kranj | 1,198.66 mi (1,929.06 km) |
| Portalegre to Kranjska Gora | 1,177.09 mi (1,894.34 km) |
| Portalegre to Krizevci | 1,286.17 mi (2,069.90 km) |
| Portalegre to Krsko | 1,245.55 mi (2,004.52 km) |
| Portalegre to Kuzma | 1,288.35 mi (2,073.40 km) |
| Portalegre to Lasko | 1,237.57 mi (1,991.68 km) |
