| Opatija to Dabuleni | 493.15 mi (793.65 km) |
| Opatija to Darabani | 613.37 mi (987.12 km) |
| Opatija to Darmanesti | 589.91 mi (949.36 km) |
| Opatija to Dej | 470.02 mi (756.43 km) |
| Opatija to Deva | 417.89 mi (672.52 km) |
| Opatija to Dolhasca | 603.63 mi (971.45 km) |
| Opatija to Dorohoi | 601.18 mi (967.50 km) |
| Opatija to Draganesti-Olt | 508.00 mi (817.55 km) |
| Opatija to Dragasani | 488.56 mi (786.26 km) |
| Opatija to Drobeta-Turnu Severin | 410.74 mi (661.02 km) |
| Opatija to Fagaras | 516.93 mi (831.93 km) |
| Opatija to Falticeni | 589.72 mi (949.06 km) |
| Opatija to Fetesti | 664.40 mi (1,069.26 km) |
| Opatija to Filiasi | 455.82 mi (733.58 km) |
| Opatija to Flamanzi | 616.85 mi (992.72 km) |
