| Hemel Hempstead to Arcore | 613.81 mi (987.83 km) |
| Hemel Hempstead to Ardea | 930.61 mi (1,497.68 km) |
| Hemel Hempstead to Arenzano | 659.41 mi (1,061.22 km) |
| Hemel Hempstead to Arese | 609.90 mi (981.54 km) |
| Hemel Hempstead to Arezzo | 809.63 mi (1,302.97 km) |
| Hemel Hempstead to Argelato | 734.90 mi (1,182.71 km) |
| Hemel Hempstead to Argenta | 749.48 mi (1,206.18 km) |
| Hemel Hempstead to Ariano Irpino | 1,037.46 mi (1,669.62 km) |
| Hemel Hempstead to Ariccia | 928.72 mi (1,494.63 km) |
| Hemel Hempstead to Arluno | 608.19 mi (978.78 km) |
| Hemel Hempstead to Arona | 582.95 mi (938.16 km) |
| Hemel Hempstead to Artena | 935.66 mi (1,505.80 km) |
| Hemel Hempstead to Arzachena | 872.14 mi (1,403.58 km) |
| Hemel Hempstead to Arzano | 1,023.21 mi (1,646.69 km) |
| Hemel Hempstead to Arzignano | 688.54 mi (1,108.10 km) |
