| Idanha-a-Nova to Kobarid | 1,133.36 mi (1,823.96 km) |
| Idanha-a-Nova to Kobilje | 1,270.75 mi (2,045.07 km) |
| Idanha-a-Nova to Kocevje | 1,183.57 mi (1,904.76 km) |
| Idanha-a-Nova to Komen | 1,133.99 mi (1,824.98 km) |
| Idanha-a-Nova to Komenda | 1,177.15 mi (1,894.44 km) |
| Idanha-a-Nova to Koper | 1,128.99 mi (1,816.94 km) |
| Idanha-a-Nova to Kostanjevica na Krki | 1,213.11 mi (1,952.31 km) |
| Idanha-a-Nova to Kostel | 1,184.13 mi (1,905.67 km) |
| Idanha-a-Nova to Kozje | 1,222.66 mi (1,967.67 km) |
| Idanha-a-Nova to Kranj | 1,169.59 mi (1,882.27 km) |
| Idanha-a-Nova to Kranjska Gora | 1,147.37 mi (1,846.51 km) |
| Idanha-a-Nova to Krizevci | 1,257.07 mi (2,023.06 km) |
| Idanha-a-Nova to Krsko | 1,217.32 mi (1,959.08 km) |
| Idanha-a-Nova to Kuzma | 1,258.78 mi (2,025.82 km) |
| Idanha-a-Nova to Lasko | 1,208.90 mi (1,945.54 km) |
