| Harpenden to Lagoa | 1,088.67 mi (1,752.05 km) |
| Harpenden to Lagoa | 1,559.77 mi (2,510.20 km) |
| Harpenden to Lagos | 1,094.65 mi (1,761.66 km) |
| Harpenden to Lamego | 820.11 mi (1,319.84 km) |
| Harpenden to Leiria | 926.37 mi (1,490.85 km) |
| Harpenden to Lisbon | 998.92 mi (1,607.61 km) |
| Harpenden to Loule | 1,079.82 mi (1,737.80 km) |
| Harpenden to Loures | 992.36 mi (1,597.05 km) |
| Harpenden to Lourinha | 969.69 mi (1,560.56 km) |
| Harpenden to Lousa | 891.95 mi (1,435.46 km) |
| Harpenden to Lousada | 816.50 mi (1,314.03 km) |
| Harpenden to Macedo de Cavaleiros | 775.43 mi (1,247.93 km) |
| Harpenden to Mafamude | 836.01 mi (1,345.42 km) |
| Harpenden to Mafra | 988.92 mi (1,591.51 km) |
| Harpenden to Maia | 828.91 mi (1,334.01 km) |
