| Rhondda to Red Bank (New Jersey) | 3,342.15 mi (5,378.67 km) |
| Rhondda to Red Bank (Tennessee) | 4,041.42 mi (6,504.04 km) |
| Rhondda to Red Bluff (California) | 5,107.56 mi (8,219.82 km) |
| Rhondda to Red Hill (South Carolina) | 3,845.19 mi (6,188.23 km) |
| Rhondda to Red Oak (Texas) | 4,629.61 mi (7,450.65 km) |
| Rhondda to Red Wing (Minnesota) | 3,882.08 mi (6,247.61 km) |
| Rhondda to Redan (Georgia) | 4,060.97 mi (6,535.49 km) |
| Rhondda to Redding (California) | 5,088.68 mi (8,189.43 km) |
| Rhondda to Redland (Maryland) | 3,521.97 mi (5,668.06 km) |
| Rhondda to Redlands (California) | 5,292.81 mi (8,517.95 km) |
| Rhondda to Redmond (Oregon) | 4,845.30 mi (7,797.76 km) |
| Rhondda to Redmond (Washington) | 4,680.49 mi (7,532.53 km) |
| Rhondda to Redondo Beach (California) | 5,343.80 mi (8,600.02 km) |
| Rhondda to Redwood City (California) | 5,259.57 mi (8,464.46 km) |
| Rhondda to Reedley (California) | 5,223.87 mi (8,407.01 km) |
