| Isernia to Dabuleni | 522.43 mi (840.77 km) |
| Isernia to Darabani | 754.97 mi (1,215.01 km) |
| Isernia to Darmanesti | 690.84 mi (1,111.80 km) |
| Isernia to Dej | 605.04 mi (973.72 km) |
| Isernia to Deva | 523.71 mi (842.83 km) |
| Isernia to Dolhasca | 729.07 mi (1,173.33 km) |
| Isernia to Dorohoi | 739.22 mi (1,189.66 km) |
| Isernia to Draganesti-Olt | 549.85 mi (884.91 km) |
| Isernia to Dragasani | 547.21 mi (880.65 km) |
| Isernia to Drobeta-Turnu Severin | 472.71 mi (760.76 km) |
| Isernia to Fagaras | 610.17 mi (981.97 km) |
| Isernia to Falticeni | 717.48 mi (1,154.68 km) |
| Isernia to Fetesti | 712.33 mi (1,146.39 km) |
| Isernia to Filiasi | 506.83 mi (815.66 km) |
| Isernia to Flamanzi | 743.59 mi (1,196.69 km) |
