| Hemel Hempstead to Arcos de Valdevez | 779.80 mi (1,254.97 km) |
| Hemel Hempstead to Arcozelo | 834.12 mi (1,342.39 km) |
| Hemel Hempstead to Arganil | 875.07 mi (1,408.30 km) |
| Hemel Hempstead to Arouca | 833.34 mi (1,341.13 km) |
| Hemel Hempstead to Arruda dos Vinhos | 974.40 mi (1,568.15 km) |
| Hemel Hempstead to Aveiro | 860.90 mi (1,385.48 km) |
| Hemel Hempstead to Aver-o-Mar | 815.26 mi (1,312.04 km) |
| Hemel Hempstead to Aves | 802.61 mi (1,291.67 km) |
| Hemel Hempstead to Azambuja | 965.02 mi (1,553.04 km) |
| Hemel Hempstead to Baiao | 814.18 mi (1,310.29 km) |
| Hemel Hempstead to Barcelos | 804.81 mi (1,295.22 km) |
| Hemel Hempstead to Barreiro | 994.67 mi (1,600.77 km) |
| Hemel Hempstead to Batalha | 926.39 mi (1,490.88 km) |
| Hemel Hempstead to Beja | 1,013.72 mi (1,631.43 km) |
| Hemel Hempstead to Belas | 991.88 mi (1,596.28 km) |
