| Niagara Falls to Curtea de Arges | 4,750.74 mi (7,645.57 km) |
| Niagara Falls to Dabuleni | 4,788.72 mi (7,706.69 km) |
| Niagara Falls to Darabani | 4,682.90 mi (7,536.40 km) |
| Niagara Falls to Darmanesti | 4,761.02 mi (7,662.13 km) |
| Niagara Falls to Dej | 4,632.30 mi (7,454.97 km) |
| Niagara Falls to Deva | 4,652.42 mi (7,487.35 km) |
| Niagara Falls to Dolhasca | 4,717.66 mi (7,592.35 km) |
| Niagara Falls to Dorohoi | 4,686.43 mi (7,542.09 km) |
| Niagara Falls to Draganesti-Olt | 4,788.69 mi (7,706.66 km) |
| Niagara Falls to Dragasani | 4,756.54 mi (7,654.91 km) |
| Niagara Falls to Drobeta-Turnu Severin | 4,697.06 mi (7,559.19 km) |
| Niagara Falls to Fagaras | 4,730.02 mi (7,612.24 km) |
| Niagara Falls to Falticeni | 4,705.38 mi (7,572.58 km) |
| Niagara Falls to Fetesti | 4,899.54 mi (7,885.04 km) |
| Niagara Falls to Filiasi | 4,740.32 mi (7,628.80 km) |
