| Round Rock to Curtea de Arges | 6,079.92 mi (9,784.68 km) |
| Round Rock to Dabuleni | 6,121.91 mi (9,852.26 km) |
| Round Rock to Darabani | 5,999.23 mi (9,654.83 km) |
| Round Rock to Darmanesti | 6,083.54 mi (9,790.52 km) |
| Round Rock to Dej | 5,957.60 mi (9,587.83 km) |
| Round Rock to Deva | 5,982.48 mi (9,627.87 km) |
| Round Rock to Dolhasca | 6,036.54 mi (9,714.87 km) |
| Round Rock to Dorohoi | 6,003.95 mi (9,662.43 km) |
| Round Rock to Draganesti-Olt | 6,120.45 mi (9,849.91 km) |
| Round Rock to Dragasani | 6,087.54 mi (9,796.96 km) |
| Round Rock to Drobeta-Turnu Severin | 6,030.41 mi (9,705.01 km) |
| Round Rock to Fagaras | 6,056.84 mi (9,747.54 km) |
| Round Rock to Falticeni | 6,024.79 mi (9,695.97 km) |
| Round Rock to Fetesti | 6,225.14 mi (10,018.40 km) |
| Round Rock to Filiasi | 6,073.00 mi (9,773.54 km) |
