| Porthcawl to Deville-les-Rouen | 250.38 mi (402.95 km) |
| Porthcawl to Dieppe | 234.87 mi (377.98 km) |
| Porthcawl to Digne-les-Bains | 686.44 mi (1,104.72 km) |
| Porthcawl to Dijon | 485.29 mi (781.00 km) |
| Porthcawl to Dinan | 221.29 mi (356.14 km) |
| Porthcawl to Dinard | 209.57 mi (337.27 km) |
| Porthcawl to Divonne-les-Bains | 568.93 mi (915.61 km) |
| Porthcawl to Dole | 512.28 mi (824.43 km) |
| Porthcawl to Dombasle-sur-Meurthe | 486.60 mi (783.10 km) |
| Porthcawl to Domerat | 452.42 mi (728.10 km) |
| Porthcawl to Domont | 315.07 mi (507.06 km) |
| Porthcawl to Douai | 304.51 mi (490.05 km) |
| Porthcawl to Douarnenez | 235.81 mi (379.50 km) |
| Porthcawl to Douchy-les-Mines | 319.14 mi (513.60 km) |
| Porthcawl to Dourdan | 324.90 mi (522.88 km) |
