| Mountain Ash to Deville-les-Rouen | 247.14 mi (397.74 km) |
| Mountain Ash to Dieppe | 229.57 mi (369.45 km) |
| Mountain Ash to Digne-les-Bains | 686.86 mi (1,105.40 km) |
| Mountain Ash to Dijon | 482.07 mi (775.81 km) |
| Mountain Ash to Dinan | 230.53 mi (371.00 km) |
| Mountain Ash to Dinard | 218.57 mi (351.76 km) |
| Mountain Ash to Divonne-les-Bains | 566.21 mi (911.23 km) |
| Mountain Ash to Dole | 508.95 mi (819.07 km) |
| Mountain Ash to Dombasle-sur-Meurthe | 479.17 mi (771.15 km) |
| Mountain Ash to Domerat | 454.61 mi (731.62 km) |
| Mountain Ash to Domont | 311.13 mi (500.72 km) |
| Mountain Ash to Douai | 294.81 mi (474.45 km) |
| Mountain Ash to Douarnenez | 251.57 mi (404.87 km) |
| Mountain Ash to Douchy-les-Mines | 309.45 mi (498.01 km) |
| Mountain Ash to Dourdan | 323.10 mi (519.99 km) |
