| Hemel Hempstead to Dewsbury | 142.51 mi (229.34 km) |
| Hemel Hempstead to Deysbrook | 155.29 mi (249.91 km) |
| Hemel Hempstead to Didcot | 34.58 mi (55.65 km) |
| Hemel Hempstead to Dingle | 153.47 mi (246.98 km) |
| Hemel Hempstead to Dinnington | 115.67 mi (186.15 km) |
| Hemel Hempstead to Dodworth | 131.24 mi (211.22 km) |
| Hemel Hempstead to Dollis Hill | 16.47 mi (26.50 km) |
| Hemel Hempstead to Doncaster | 125.46 mi (201.91 km) |
| Hemel Hempstead to Dorchester | 111.26 mi (179.06 km) |
| Hemel Hempstead to Dorking | 36.43 mi (58.62 km) |
| Hemel Hempstead to Dorridge | 69.40 mi (111.69 km) |
| Hemel Hempstead to Dover | 87.85 mi (141.38 km) |
| Hemel Hempstead to Downham Market | 68.94 mi (110.95 km) |
| Hemel Hempstead to Droitwich | 79.94 mi (128.65 km) |
| Hemel Hempstead to Dronfield | 114.99 mi (185.06 km) |
