| Sioux City to Curtea de Arges | 5,379.10 mi (8,656.82 km) |
| Sioux City to Dabuleni | 5,430.85 mi (8,740.10 km) |
| Sioux City to Darabani | 5,275.62 mi (8,490.30 km) |
| Sioux City to Darmanesti | 5,369.30 mi (8,641.06 km) |
| Sioux City to Dej | 5,249.71 mi (8,448.60 km) |
| Sioux City to Deva | 5,284.61 mi (8,504.76 km) |
| Sioux City to Dolhasca | 5,316.55 mi (8,556.16 km) |
| Sioux City to Dorohoi | 5,282.12 mi (8,500.76 km) |
| Sioux City to Draganesti-Olt | 5,425.51 mi (8,731.52 km) |
| Sioux City to Dragasani | 5,391.02 mi (8,676.01 km) |
| Sioux City to Drobeta-Turnu Severin | 5,340.64 mi (8,594.94 km) |
| Sioux City to Fagaras | 5,351.09 mi (8,611.75 km) |
| Sioux City to Falticeni | 5,305.79 mi (8,538.84 km) |
| Sioux City to Fetesti | 5,515.43 mi (8,876.22 km) |
| Sioux City to Filiasi | 5,380.96 mi (8,659.82 km) |
