| Hemel Hempstead to Archdale (North Carolina) | 3,903.44 mi (6,281.97 km) |
| Hemel Hempstead to Arden-Arcade (California) | 5,253.14 mi (8,454.11 km) |
| Hemel Hempstead to Ardmore (Oklahoma) | 4,666.65 mi (7,510.24 km) |
| Hemel Hempstead to Ardmore (Pennsylvania) | 3,525.53 mi (5,673.80 km) |
| Hemel Hempstead to Arecibo (Puerto Rico) | 4,214.47 mi (6,782.53 km) |
| Hemel Hempstead to Arkadelphia (Arkansas) | 4,514.25 mi (7,264.99 km) |
| Hemel Hempstead to Arkansas City (Kansas) | 4,515.92 mi (7,267.68 km) |
| Hemel Hempstead to Arlington (Tennessee) | 4,324.21 mi (6,959.14 km) |
| Hemel Hempstead to Arlington (Texas) | 4,743.98 mi (7,634.70 km) |
| Hemel Hempstead to Arlington (Virginia) | 3,649.30 mi (5,872.98 km) |
| Hemel Hempstead to Arlington (Washington) | 4,724.86 mi (7,603.93 km) |
| Hemel Hempstead to Arlington Heights (Illinois) | 3,930.00 mi (6,324.72 km) |
| Hemel Hempstead to Arnold (Maryland) | 3,617.29 mi (5,821.46 km) |
| Hemel Hempstead to Arnold (Missouri) | 4,195.94 mi (6,752.72 km) |
| Hemel Hempstead to Arroyo Grande (California) | 5,430.16 mi (8,739.00 km) |
