| Irthlingborough to Kanjiza | 1,023.55 mi (1,647.24 km) |
| Irthlingborough to Kikinda | 1,048.43 mi (1,687.29 km) |
| Irthlingborough to Kladovo | 1,182.97 mi (1,903.80 km) |
| Irthlingborough to Knic | 1,136.22 mi (1,828.57 km) |
| Irthlingborough to Knjazevac | 1,221.44 mi (1,965.72 km) |
| Irthlingborough to Koceljeva | 1,077.14 mi (1,733.49 km) |
| Irthlingborough to Kosjeric | 1,101.49 mi (1,772.67 km) |
| Irthlingborough to Kovacica | 1,083.18 mi (1,743.21 km) |
| Irthlingborough to Kovin | 1,111.42 mi (1,788.66 km) |
| Irthlingborough to Kragujevac | 1,140.79 mi (1,835.93 km) |
| Irthlingborough to Kraljevo | 1,143.38 mi (1,840.09 km) |
| Irthlingborough to Krupanj | 1,064.39 mi (1,712.97 km) |
| Irthlingborough to Krusevac | 1,174.39 mi (1,889.99 km) |
| Irthlingborough to Kucevo | 1,150.11 mi (1,850.93 km) |
| Irthlingborough to Kula | 1,020.54 mi (1,642.40 km) |
