| Hemel Hempstead to Desert Hot Springs (California) | 5,368.86 mi (8,640.35 km) |
| Hemel Hempstead to DeSoto (Texas) | 4,739.15 mi (7,626.92 km) |
| Hemel Hempstead to Destin (Florida) | 4,438.60 mi (7,143.24 km) |
| Hemel Hempstead to Destrehan (Louisiana) | 4,618.72 mi (7,433.10 km) |
| Hemel Hempstead to Detroit (Michigan) | 3,729.87 mi (6,002.65 km) |
| Hemel Hempstead to Diamond Bar (California) | 5,407.59 mi (8,702.67 km) |
| Hemel Hempstead to Diamond Springs (California) | 5,231.76 mi (8,419.71 km) |
| Hemel Hempstead to Dickinson (North Dakota) | 4,222.60 mi (6,795.62 km) |
| Hemel Hempstead to Dickinson (Texas) | 4,832.20 mi (7,776.67 km) |
| Hemel Hempstead to Dickson (Tennessee) | 4,193.86 mi (6,749.36 km) |
| Hemel Hempstead to Difficult Run (Virginia) | 3,658.26 mi (5,887.40 km) |
| Hemel Hempstead to Dinuba (California) | 5,311.62 mi (8,548.22 km) |
| Hemel Hempstead to Discovery Bay (California) | 5,299.75 mi (8,529.13 km) |
| Hemel Hempstead to Dix Hills (New York) | 3,410.83 mi (5,489.20 km) |
| Hemel Hempstead to Dixon (California) | 5,275.10 mi (8,489.45 km) |
