| Heerlen to Derecik | 2,099.31 mi (3,378.51 km) |
| Heerlen to Dereli | 1,695.24 mi (2,728.22 km) |
| Heerlen to Derik | 1,915.82 mi (3,083.21 km) |
| Heerlen to Derinkuyu | 1,641.27 mi (2,641.36 km) |
| Heerlen to Develi | 1,671.61 mi (2,690.20 km) |
| Heerlen to Dicle | 1,863.21 mi (2,998.55 km) |
| Heerlen to Digor | 1,923.42 mi (3,095.45 km) |
| Heerlen to Dikili | 1,299.82 mi (2,091.86 km) |
| Heerlen to Divrigi | 1,738.15 mi (2,797.29 km) |
| Heerlen to Diyadin | 1,968.31 mi (3,167.68 km) |
| Heerlen to Diyarbakir | 1,890.50 mi (3,042.46 km) |
| Heerlen to Doganhisar | 1,529.13 mi (2,460.89 km) |
| Heerlen to Dogansehir | 1,783.42 mi (2,870.13 km) |
| Heerlen to Dogubayazit | 1,985.52 mi (3,195.39 km) |
| Heerlen to Domanic | 1,370.10 mi (2,204.97 km) |
