| Hemel Hempstead to Ames | 720.32 mi (1,159.24 km) |
| Hemel Hempstead to Amorebieta | 598.93 mi (963.89 km) |
| Hemel Hempstead to Amposta | 764.56 mi (1,230.43 km) |
| Hemel Hempstead to Amurrio | 612.55 mi (985.80 km) |
| Hemel Hempstead to Andoain | 594.15 mi (956.19 km) |
| Hemel Hempstead to Andraitx | 852.73 mi (1,372.34 km) |
| Hemel Hempstead to Andujar | 963.28 mi (1,550.24 km) |
| Hemel Hempstead to Antequera | 1,037.46 mi (1,669.63 km) |
| Hemel Hempstead to Antigua | 1,757.55 mi (2,828.51 km) |
| Hemel Hempstead to Aranda de Duero | 712.00 mi (1,145.85 km) |
| Hemel Hempstead to Aranjuez | 823.42 mi (1,325.17 km) |
| Hemel Hempstead to Archena | 943.12 mi (1,517.81 km) |
| Hemel Hempstead to Arcos de la Frontera | 1,068.90 mi (1,720.22 km) |
| Hemel Hempstead to Arenys de Mar | 717.00 mi (1,153.89 km) |
| Hemel Hempstead to Arenys de Munt | 714.80 mi (1,150.36 km) |
