| Mountain Ash to Droylsden | 134.60 mi (216.62 km) |
| Mountain Ash to Dudley | 79.13 mi (127.34 km) |
| Mountain Ash to Dukinfield | 135.28 mi (217.71 km) |
| Mountain Ash to Dumbarton | 298.87 mi (480.99 km) |
| Mountain Ash to Dumfries | 234.31 mi (377.09 km) |
| Mountain Ash to Dunbar | 300.63 mi (483.82 km) |
| Mountain Ash to Dunblane | 312.00 mi (502.12 km) |
| Mountain Ash to Dundee | 330.72 mi (532.24 km) |
| Mountain Ash to Dunfermline | 303.36 mi (488.22 km) |
| Mountain Ash to Dunstable | 122.98 mi (197.91 km) |
| Mountain Ash to Durham | 226.47 mi (364.47 km) |
| Mountain Ash to Ealing | 132.68 mi (213.52 km) |
| Mountain Ash to Earlestown | 125.98 mi (202.74 km) |
| Mountain Ash to Earley | 106.47 mi (171.35 km) |
| Mountain Ash to East Barnet | 137.86 mi (221.86 km) |
