| Oak Ridge to Romeoville (Illinois) | 441.88 mi (711.13 km) |
| Oak Ridge to Romulus (Michigan) | 435.35 mi (700.63 km) |
| Oak Ridge to Ronkonkoma (New York) | 690.42 mi (1,111.13 km) |
| Oak Ridge to Roosevelt (New York) | 665.05 mi (1,070.29 km) |
| Oak Ridge to Rosamond (California) | 1,901.98 mi (3,060.94 km) |
| Oak Ridge to Rosaryville (Maryland) | 453.30 mi (729.51 km) |
| Oak Ridge to Roscoe (Illinois) | 512.68 mi (825.08 km) |
| Oak Ridge to Rose Hill (Virginia) | 439.93 mi (708.00 km) |
| Oak Ridge to Roseburg (Oregon) | 2,118.70 mi (3,409.73 km) |
| Oak Ridge to Rosedale (California) | 1,949.31 mi (3,137.12 km) |
| Oak Ridge to Rosedale (Maryland) | 484.92 mi (780.40 km) |
| Oak Ridge to Roselle (Illinois) | 462.83 mi (744.86 km) |
| Oak Ridge to Roselle (New Jersey) | 632.56 mi (1,018.00 km) |
| Oak Ridge to Roselle Park (New Jersey) | 632.65 mi (1,018.15 km) |
| Oak Ridge to Rosemead (California) | 1,906.93 mi (3,068.91 km) |
