| Harpenden to Kecskemet | 959.80 mi (1,544.66 km) |
| Harpenden to Kerepestarcsa | 921.85 mi (1,483.57 km) |
| Harpenden to Keszthely | 863.57 mi (1,389.79 km) |
| Harpenden to Kiskoros | 952.43 mi (1,532.79 km) |
| Harpenden to Kiskunfelegyhaza | 973.07 mi (1,566.01 km) |
| Harpenden to Kiskunhalas | 967.32 mi (1,556.74 km) |
| Harpenden to Kiskunlachaza | 922.31 mi (1,484.32 km) |
| Harpenden to Kiskunmajsa | 975.53 mi (1,569.96 km) |
| Harpenden to Kisujszallas | 995.06 mi (1,601.39 km) |
| Harpenden to Kisvarda | 1,022.19 mi (1,645.05 km) |
| Harpenden to Komarom | 868.34 mi (1,397.45 km) |
| Harpenden to Komlo | 925.47 mi (1,489.39 km) |
| Harpenden to Kormend | 828.97 mi (1,334.10 km) |
| Harpenden to Koszeg | 814.31 mi (1,310.50 km) |
| Harpenden to Lajosmizse | 950.42 mi (1,529.55 km) |
