| Harpenden to Klaukkala | 1,123.53 mi (1,808.15 km) |
| Harpenden to Kokkola | 1,185.46 mi (1,907.81 km) |
| Harpenden to Kontiolahti | 1,338.35 mi (2,153.86 km) |
| Harpenden to Korsholm | 1,120.36 mi (1,803.04 km) |
| Harpenden to Kotka | 1,196.09 mi (1,924.93 km) |
| Harpenden to Kouvola | 1,197.26 mi (1,926.81 km) |
| Harpenden to Kuhmo | 1,364.52 mi (2,195.98 km) |
| Harpenden to Kuopio | 1,278.09 mi (2,056.88 km) |
| Harpenden to Kurikka | 1,121.13 mi (1,804.29 km) |
| Harpenden to Kuusamo | 1,413.31 mi (2,274.51 km) |
| Harpenden to Kuusankoski | 1,195.63 mi (1,924.17 km) |
| Harpenden to Lahti | 1,166.78 mi (1,877.75 km) |
| Harpenden to Laitila | 1,042.86 mi (1,678.32 km) |
| Harpenden to Lapinlahti | 1,283.33 mi (2,065.31 km) |
| Harpenden to Lappeenranta | 1,248.64 mi (2,009.50 km) |
