| Hemel Hempstead to Dixon (Illinois) | 3,998.29 mi (6,434.62 km) |
| Hemel Hempstead to Dobbs Ferry (New York) | 3,423.44 mi (5,509.49 km) |
| Hemel Hempstead to Doctor Phillips (Florida) | 4,330.41 mi (6,969.11 km) |
| Hemel Hempstead to Dodge City (Kansas) | 4,590.45 mi (7,387.62 km) |
| Hemel Hempstead to Dolton (Illinois) | 3,937.17 mi (6,336.27 km) |
| Hemel Hempstead to Donna (Texas) | 5,124.95 mi (8,247.81 km) |
| Hemel Hempstead to Dorado (Puerto Rico) | 4,193.81 mi (6,749.28 km) |
| Hemel Hempstead to Doral (Florida) | 4,415.48 mi (7,106.03 km) |
| Hemel Hempstead to Doraville (Georgia) | 4,174.90 mi (6,718.85 km) |
| Hemel Hempstead to Dothan (Alabama) | 4,353.14 mi (7,005.71 km) |
| Hemel Hempstead to Douglas (Arizona) | 5,275.27 mi (8,489.72 km) |
| Hemel Hempstead to Douglas (Georgia) | 4,234.82 mi (6,815.28 km) |
| Hemel Hempstead to Douglasville (Georgia) | 4,200.77 mi (6,760.49 km) |
| Hemel Hempstead to Dover (Delaware) | 3,572.18 mi (5,748.87 km) |
| Hemel Hempstead to Dover (New Hampshire) | 3,210.47 mi (5,166.76 km) |
