| Oak Ridge to Red Bank (New Jersey) | 632.23 mi (1,017.48 km) |
| Oak Ridge to Red Bank (Tennessee) | 81.51 mi (131.17 km) |
| Oak Ridge to Red Bluff (California) | 2,068.67 mi (3,329.20 km) |
| Oak Ridge to Red Hill (South Carolina) | 335.33 mi (539.66 km) |
| Oak Ridge to Red Oak (Texas) | 751.48 mi (1,209.40 km) |
| Oak Ridge to Red Wing (Minnesota) | 738.35 mi (1,188.25 km) |
| Oak Ridge to Redan (Georgia) | 153.87 mi (247.63 km) |
| Oak Ridge to Redding (California) | 2,073.28 mi (3,336.63 km) |
| Oak Ridge to Redland (Maryland) | 448.43 mi (721.67 km) |
| Oak Ridge to Redlands (California) | 1,856.54 mi (2,987.81 km) |
| Oak Ridge to Redmond (Oregon) | 2,012.86 mi (3,239.38 km) |
| Oak Ridge to Redmond (Washington) | 2,083.40 mi (3,352.90 km) |
| Oak Ridge to Redondo Beach (California) | 1,926.81 mi (3,100.90 km) |
| Oak Ridge to Redwood City (California) | 2,088.85 mi (3,361.67 km) |
| Oak Ridge to Reedley (California) | 1,947.42 mi (3,134.07 km) |
