| Difficult Run to Curtea de Arges | 4,883.91 mi (7,859.89 km) |
| Difficult Run to Dabuleni | 4,915.25 mi (7,910.33 km) |
| Difficult Run to Darabani | 4,832.04 mi (7,776.41 km) |
| Difficult Run to Darmanesti | 4,902.93 mi (7,890.50 km) |
| Difficult Run to Dej | 4,771.37 mi (7,678.78 km) |
| Difficult Run to Deva | 4,784.71 mi (7,700.25 km) |
| Difficult Run to Dolhasca | 4,863.93 mi (7,827.74 km) |
| Difficult Run to Dorohoi | 4,834.31 mi (7,780.06 km) |
| Difficult Run to Draganesti-Olt | 4,917.69 mi (7,914.26 km) |
| Difficult Run to Dragasani | 4,886.88 mi (7,864.67 km) |
| Difficult Run to Drobeta-Turnu Severin | 4,823.71 mi (7,763.01 km) |
| Difficult Run to Fagaras | 4,866.63 mi (7,832.08 km) |
| Difficult Run to Falticeni | 4,851.11 mi (7,807.11 km) |
| Difficult Run to Fetesti | 5,036.97 mi (8,106.22 km) |
| Difficult Run to Filiasi | 4,867.95 mi (7,834.22 km) |
