| Porthcawl to Denizli | 1,846.95 mi (2,972.38 km) |
| Porthcawl to Derecik | 2,519.61 mi (4,054.92 km) |
| Porthcawl to Dereli | 2,115.63 mi (3,404.77 km) |
| Porthcawl to Derik | 2,334.30 mi (3,756.69 km) |
| Porthcawl to Derinkuyu | 2,055.46 mi (3,307.94 km) |
| Porthcawl to Develi | 2,086.87 mi (3,358.49 km) |
| Porthcawl to Dicle | 2,282.60 mi (3,673.49 km) |
| Porthcawl to Digor | 2,343.90 mi (3,772.15 km) |
| Porthcawl to Dikili | 1,698.13 mi (2,732.88 km) |
| Porthcawl to Divrigi | 2,157.35 mi (3,471.93 km) |
| Porthcawl to Diyadin | 2,388.95 mi (3,844.65 km) |
| Porthcawl to Diyarbakir | 2,309.54 mi (3,716.85 km) |
| Porthcawl to Doganhisar | 1,937.16 mi (3,117.55 km) |
| Porthcawl to Dogansehir | 2,200.83 mi (3,541.89 km) |
| Porthcawl to Dogubayazit | 2,406.13 mi (3,872.29 km) |
