| Irthlingborough to Kidricevo | 841.40 mi (1,354.10 km) |
| Irthlingborough to Kobarid | 763.09 mi (1,228.08 km) |
| Irthlingborough to Kobilje | 854.08 mi (1,374.51 km) |
| Irthlingborough to Kocevje | 837.20 mi (1,347.34 km) |
| Irthlingborough to Komen | 788.33 mi (1,268.69 km) |
| Irthlingborough to Komenda | 800.99 mi (1,289.06 km) |
| Irthlingborough to Koper | 799.61 mi (1,286.85 km) |
| Irthlingborough to Kostanjevica na Krki | 849.89 mi (1,367.77 km) |
| Irthlingborough to Kostel | 844.96 mi (1,359.83 km) |
| Irthlingborough to Kozje | 845.55 mi (1,360.78 km) |
| Irthlingborough to Kranj | 793.35 mi (1,276.78 km) |
| Irthlingborough to Kranjska Gora | 760.81 mi (1,224.41 km) |
| Irthlingborough to Krizevci | 848.62 mi (1,365.73 km) |
| Irthlingborough to Krsko | 847.78 mi (1,364.37 km) |
| Irthlingborough to Kuzma | 836.06 mi (1,345.51 km) |
