| Donostia to Curtea de Arges | 1,319.80 mi (2,124.01 km) |
| Donostia to Dabuleni | 1,300.38 mi (2,092.77 km) |
| Donostia to Darabani | 1,408.90 mi (2,267.40 km) |
| Donostia to Darmanesti | 1,402.26 mi (2,256.72 km) |
| Donostia to Dej | 1,275.83 mi (2,053.24 km) |
| Donostia to Deva | 1,232.28 mi (1,983.17 km) |
| Donostia to Dolhasca | 1,407.95 mi (2,265.87 km) |
| Donostia to Dorohoi | 1,399.38 mi (2,252.08 km) |
| Donostia to Draganesti-Olt | 1,318.80 mi (2,122.41 km) |
| Donostia to Dragasani | 1,302.04 mi (2,095.43 km) |
| Donostia to Drobeta-Turnu Severin | 1,223.31 mi (1,968.73 km) |
| Donostia to Fagaras | 1,331.42 mi (2,142.71 km) |
| Donostia to Falticeni | 1,393.54 mi (2,242.68 km) |
| Donostia to Fetesti | 1,478.30 mi (2,379.10 km) |
| Donostia to Filiasi | 1,267.42 mi (2,039.72 km) |
