| Holyhead to Denizli | 1,925.84 mi (3,099.35 km) |
| Holyhead to Derecik | 2,569.98 mi (4,135.98 km) |
| Holyhead to Dereli | 2,165.96 mi (3,485.78 km) |
| Holyhead to Derik | 2,391.47 mi (3,848.70 km) |
| Holyhead to Derinkuyu | 2,120.59 mi (3,412.75 km) |
| Holyhead to Develi | 2,150.42 mi (3,460.77 km) |
| Holyhead to Dicle | 2,337.23 mi (3,761.41 km) |
| Holyhead to Digor | 2,386.31 mi (3,840.39 km) |
| Holyhead to Dikili | 1,777.92 mi (2,861.28 km) |
| Holyhead to Divrigi | 2,212.71 mi (3,561.02 km) |
| Holyhead to Diyadin | 2,433.44 mi (3,916.25 km) |
| Holyhead to Diyarbakir | 2,365.22 mi (3,806.45 km) |
| Holyhead to Doganhisar | 2,009.33 mi (3,233.70 km) |
| Holyhead to Dogansehir | 2,260.52 mi (3,637.96 km) |
| Holyhead to Dogubayazit | 2,449.87 mi (3,942.69 km) |
