| Irthlingborough to Jicin | 699.24 mi (1,125.31 km) |
| Irthlingborough to Jihlava | 733.23 mi (1,180.02 km) |
| Irthlingborough to Jindrichuv Hradec | 715.75 mi (1,151.88 km) |
| Irthlingborough to Jirkov | 617.90 mi (994.42 km) |
| Irthlingborough to Kadan | 613.09 mi (986.67 km) |
| Irthlingborough to Karlovy Vary | 599.61 mi (964.98 km) |
| Irthlingborough to Karvina | 846.05 mi (1,361.58 km) |
| Irthlingborough to Kladno | 652.75 mi (1,050.51 km) |
| Irthlingborough to Klasterec nad Ohri | 608.72 mi (979.64 km) |
| Irthlingborough to Klatovy | 638.27 mi (1,027.20 km) |
| Irthlingborough to Kolin | 701.62 mi (1,129.15 km) |
| Irthlingborough to Koprivnice | 835.19 mi (1,344.12 km) |
| Irthlingborough to Kralupy nad Vltavou | 659.61 mi (1,061.54 km) |
| Irthlingborough to Kraluv Dvur | 654.64 mi (1,053.54 km) |
| Irthlingborough to Krnov | 805.29 mi (1,295.98 km) |
