| South Portland to Curtea de Arges | 4,393.27 mi (7,070.29 km) |
| South Portland to Dabuleni | 4,424.98 mi (7,121.32 km) |
| South Portland to Darabani | 4,341.80 mi (6,987.45 km) |
| South Portland to Darmanesti | 4,412.28 mi (7,100.87 km) |
| South Portland to Dej | 4,280.67 mi (6,889.07 km) |
| South Portland to Deva | 4,294.10 mi (6,910.69 km) |
| South Portland to Dolhasca | 4,373.48 mi (7,038.43 km) |
| South Portland to Dorohoi | 4,343.97 mi (6,990.94 km) |
| South Portland to Draganesti-Olt | 4,427.25 mi (7,124.98 km) |
| South Portland to Dragasani | 4,396.36 mi (7,075.26 km) |
| South Portland to Drobeta-Turnu Severin | 4,333.42 mi (6,973.96 km) |
| South Portland to Fagaras | 4,375.92 mi (7,042.37 km) |
| South Portland to Falticeni | 4,360.63 mi (7,017.76 km) |
| South Portland to Fetesti | 4,546.26 mi (7,316.50 km) |
| South Portland to Filiasi | 4,377.60 mi (7,045.07 km) |
