| Irthlingborough to Klaukkala | 1,109.09 mi (1,784.90 km) |
| Irthlingborough to Kokkola | 1,164.28 mi (1,873.73 km) |
| Irthlingborough to Kontiolahti | 1,321.19 mi (2,126.24 km) |
| Irthlingborough to Korsholm | 1,099.65 mi (1,769.72 km) |
| Irthlingborough to Kotka | 1,182.18 mi (1,902.54 km) |
| Irthlingborough to Kouvola | 1,182.52 mi (1,903.07 km) |
| Irthlingborough to Kuhmo | 1,345.16 mi (2,164.82 km) |
| Irthlingborough to Kuopio | 1,260.09 mi (2,027.92 km) |
| Irthlingborough to Kurikka | 1,101.58 mi (1,772.82 km) |
| Irthlingborough to Kuusamo | 1,391.29 mi (2,239.07 km) |
| Irthlingborough to Kuusankoski | 1,180.78 mi (1,900.28 km) |
| Irthlingborough to Lahti | 1,151.48 mi (1,853.13 km) |
| Irthlingborough to Laitila | 1,026.16 mi (1,651.45 km) |
| Irthlingborough to Lapinlahti | 1,264.48 mi (2,034.98 km) |
| Irthlingborough to Lappeenranta | 1,233.96 mi (1,985.86 km) |
