| Caerfyrddin to Deville-les-Rouen | 286.95 mi (461.81 km) |
| Caerfyrddin to Dieppe | 270.47 mi (435.28 km) |
| Caerfyrddin to Digne-les-Bains | 723.78 mi (1,164.81 km) |
| Caerfyrddin to Dijon | 521.95 mi (840.00 km) |
| Caerfyrddin to Dinan | 255.43 mi (411.07 km) |
| Caerfyrddin to Dinard | 243.95 mi (392.60 km) |
| Caerfyrddin to Divonne-les-Bains | 605.77 mi (974.90 km) |
| Caerfyrddin to Dole | 548.90 mi (883.38 km) |
| Caerfyrddin to Dombasle-sur-Meurthe | 520.85 mi (838.22 km) |
| Caerfyrddin to Domerat | 489.65 mi (788.02 km) |
| Caerfyrddin to Domont | 351.40 mi (565.52 km) |
| Caerfyrddin to Douai | 336.63 mi (541.75 km) |
| Caerfyrddin to Douarnenez | 260.05 mi (418.52 km) |
| Caerfyrddin to Douchy-les-Mines | 351.26 mi (565.30 km) |
| Caerfyrddin to Dourdan | 361.94 mi (582.49 km) |
