| Cities | Distance |
|---|---|
| Heerlen to Dabuleni | 975.12 mi (1,569.30 km) |
| Heerlen to Darabani | 939.32 mi (1,511.68 km) |
| Heerlen to Darmanesti | 982.81 mi (1,581.68 km) |
| Heerlen to Dej | 847.13 mi (1,363.32 km) |
| Heerlen to Deva | 847.93 mi (1,364.61 km) |
| Heerlen to Dolhasca | 958.58 mi (1,542.69 km) |
| Heerlen to Dorohoi | 936.33 mi (1,506.88 km) |
| Heerlen to Draganesti-Olt | 977.97 mi (1,573.89 km) |
| Heerlen to Dragasani | 947.90 mi (1,525.50 km) |
| Heerlen to Drobeta-Turnu Severin | 883.57 mi (1,421.98 km) |
| Heerlen to Fagaras | 935.39 mi (1,505.37 km) |
| Heerlen to Falticeni | 944.42 mi (1,519.89 km) |
| Heerlen to Fetesti | 1,105.10 mi (1,778.49 km) |
| Heerlen to Filiasi | 927.91 mi (1,493.32 km) |
| Heerlen to Flamanzi | 966.67 mi (1,555.70 km) |