| Hertford to Jicin | 674.46 mi (1,085.44 km) |
| Hertford to Jihlava | 705.31 mi (1,135.08 km) |
| Hertford to Jindrichuv Hradec | 686.63 mi (1,105.03 km) |
| Hertford to Jirkov | 592.14 mi (952.96 km) |
| Hertford to Kadan | 586.74 mi (944.26 km) |
| Hertford to Karlovy Vary | 572.42 mi (921.22 km) |
| Hertford to Karvina | 821.35 mi (1,321.84 km) |
| Hertford to Kladno | 626.17 mi (1,007.72 km) |
| Hertford to Klasterec nad Ohri | 582.33 mi (937.17 km) |
| Hertford to Klatovy | 608.53 mi (979.33 km) |
| Hertford to Kolin | 675.38 mi (1,086.92 km) |
| Hertford to Koprivnice | 809.55 mi (1,302.85 km) |
| Hertford to Kralupy nad Vltavou | 633.49 mi (1,019.50 km) |
| Hertford to Kraluv Dvur | 627.31 mi (1,009.56 km) |
| Hertford to Krnov | 780.78 mi (1,256.55 km) |
