| Hemel Hempstead to Accokeek (Maryland) | 3,654.52 mi (5,881.38 km) |
| Hemel Hempstead to Acworth (Georgia) | 4,183.84 mi (6,733.24 km) |
| Hemel Hempstead to Ada (Oklahoma) | 4,619.86 mi (7,434.95 km) |
| Hemel Hempstead to Addison (Illinois) | 3,938.64 mi (6,338.62 km) |
| Hemel Hempstead to Addison (Texas) | 4,719.43 mi (7,595.20 km) |
| Hemel Hempstead to Adelanto (California) | 5,362.25 mi (8,629.70 km) |
| Hemel Hempstead to Adelphi (Maryland) | 3,638.20 mi (5,855.12 km) |
| Hemel Hempstead to Adrian (Michigan) | 3,788.26 mi (6,096.61 km) |
| Hemel Hempstead to Affton (Missouri) | 4,188.30 mi (6,740.41 km) |
| Hemel Hempstead to Agoura Hills (California) | 5,429.11 mi (8,737.31 km) |
| Hemel Hempstead to Aguadilla (Puerto Rico) | 4,232.67 mi (6,811.83 km) |
| Hemel Hempstead to Aiken (South Carolina) | 4,089.42 mi (6,581.28 km) |
| Hemel Hempstead to Akron (Ohio) | 3,726.89 mi (5,997.85 km) |
| Hemel Hempstead to Alabaster (Alabama) | 4,311.88 mi (6,939.30 km) |
| Hemel Hempstead to Alachua (Florida) | 4,305.22 mi (6,928.59 km) |
