| Difficult Run to Dewsbury | 3,572.20 mi (5,748.90 km) |
| Difficult Run to Deysbrook | 3,525.71 mi (5,674.08 km) |
| Difficult Run to Didcot | 3,629.96 mi (5,841.86 km) |
| Difficult Run to Dingle | 3,525.57 mi (5,673.86 km) |
| Difficult Run to Dinnington | 3,595.56 mi (5,786.50 km) |
| Difficult Run to Dodworth | 3,579.46 mi (5,760.59 km) |
| Difficult Run to Dollis Hill | 3,671.93 mi (5,909.40 km) |
| Difficult Run to Doncaster | 3,595.09 mi (5,785.74 km) |
| Difficult Run to Dorchester | 3,599.46 mi (5,792.78 km) |
| Difficult Run to Dorking | 3,675.31 mi (5,914.83 km) |
| Difficult Run to Dorridge | 3,593.23 mi (5,782.75 km) |
| Difficult Run to Dover | 3,744.69 mi (6,026.49 km) |
| Difficult Run to Downham Market | 3,674.52 mi (5,913.57 km) |
| Difficult Run to Droitwich | 3,579.27 mi (5,760.28 km) |
| Difficult Run to Dronfield | 3,586.29 mi (5,771.58 km) |
