| Harpenden to Luban | 673.66 mi (1,084.15 km) |
| Harpenden to Lubartow | 980.36 mi (1,577.74 km) |
| Harpenden to Lubawa | 847.56 mi (1,364.02 km) |
| Harpenden to Lubin | 709.30 mi (1,141.51 km) |
| Harpenden to Lublin | 981.77 mi (1,580.01 km) |
| Harpenden to Lubliniec | 824.58 mi (1,327.03 km) |
| Harpenden to Lubon | 731.07 mi (1,176.54 km) |
| Harpenden to Lubsko | 653.22 mi (1,051.26 km) |
| Harpenden to Lukow | 965.96 mi (1,554.56 km) |
| Harpenden to Lwowek Slaski | 686.24 mi (1,104.40 km) |
| Harpenden to Makow Mazowiecki | 905.06 mi (1,456.55 km) |
| Harpenden to Malbork | 819.14 mi (1,318.27 km) |
| Harpenden to Marki | 908.36 mi (1,461.87 km) |
| Harpenden to Miastko | 736.05 mi (1,184.55 km) |
| Harpenden to Miechow | 887.48 mi (1,428.25 km) |
