| Hemel Hempstead to Alenquer | 969.12 mi (1,559.65 km) |
| Hemel Hempstead to Alfena | 820.18 mi (1,319.95 km) |
| Hemel Hempstead to Alijo | 795.94 mi (1,280.94 km) |
| Hemel Hempstead to Aljustrel | 1,026.29 mi (1,651.65 km) |
| Hemel Hempstead to Almada | 995.65 mi (1,602.34 km) |
| Hemel Hempstead to Almargem | 987.28 mi (1,588.87 km) |
| Hemel Hempstead to Almeirim | 951.49 mi (1,531.27 km) |
| Hemel Hempstead to Amadora | 993.79 mi (1,599.34 km) |
| Hemel Hempstead to Amarante | 808.55 mi (1,301.23 km) |
| Hemel Hempstead to Amares | 792.27 mi (1,275.03 km) |
| Hemel Hempstead to Amora | 998.30 mi (1,606.61 km) |
| Hemel Hempstead to Anadia | 868.99 mi (1,398.51 km) |
| Hemel Hempstead to Angra do Heroismo | 1,571.20 mi (2,528.61 km) |
| Hemel Hempstead to Ansiao | 901.91 mi (1,451.48 km) |
| Hemel Hempstead to Anta | 836.83 mi (1,346.75 km) |
