| Harpenden to Kolarovo | 857.70 mi (1,380.33 km) |
| Harpenden to Komarno | 867.81 mi (1,396.60 km) |
| Harpenden to Kosice | 973.95 mi (1,567.42 km) |
| Harpenden to Krompachy | 953.15 mi (1,533.94 km) |
| Harpenden to Kysucke Nove Mesto | 855.30 mi (1,376.47 km) |
| Harpenden to Levice | 874.91 mi (1,408.04 km) |
| Harpenden to Levoca | 938.33 mi (1,510.10 km) |
| Harpenden to Liptovsky Mikulas | 894.95 mi (1,440.28 km) |
| Harpenden to Lucenec | 916.72 mi (1,475.32 km) |
| Harpenden to Malacky | 801.88 mi (1,290.50 km) |
| Harpenden to Martin | 866.44 mi (1,394.40 km) |
| Harpenden to Michalovce | 1,001.27 mi (1,611.39 km) |
| Harpenden to Modra | 817.00 mi (1,314.83 km) |
| Harpenden to Moldava nad Bodvou | 966.06 mi (1,554.72 km) |
| Harpenden to Myjava | 816.61 mi (1,314.20 km) |
