| Holyhead to Kidricevo | 1,022.44 mi (1,645.46 km) |
| Holyhead to Kobarid | 943.79 mi (1,518.88 km) |
| Holyhead to Kobilje | 1,034.90 mi (1,665.51 km) |
| Holyhead to Kocevje | 1,017.96 mi (1,638.25 km) |
| Holyhead to Komen | 968.74 mi (1,559.04 km) |
| Holyhead to Komenda | 981.95 mi (1,580.29 km) |
| Holyhead to Koper | 979.74 mi (1,576.74 km) |
| Holyhead to Kostanjevica na Krki | 1,030.89 mi (1,659.06 km) |
| Holyhead to Kostel | 1,025.65 mi (1,650.63 km) |
| Holyhead to Kozje | 1,026.61 mi (1,652.16 km) |
| Holyhead to Kranj | 974.29 mi (1,567.96 km) |
| Holyhead to Kranjska Gora | 941.73 mi (1,515.56 km) |
| Holyhead to Krizevci | 1,029.56 mi (1,656.92 km) |
| Holyhead to Krsko | 1,028.81 mi (1,655.71 km) |
| Holyhead to Kuzma | 1,016.88 mi (1,636.50 km) |
