| Rhondda to River Ridge (Louisiana) | 4,496.14 mi (7,235.84 km) |
| Rhondda to Riverbank (California) | 5,207.20 mi (8,380.17 km) |
| Rhondda to Riverdale (Georgia) | 4,079.56 mi (6,565.41 km) |
| Rhondda to Riverdale (Illinois) | 3,828.86 mi (6,161.95 km) |
| Rhondda to Riverside (California) | 5,306.63 mi (8,540.20 km) |
| Rhondda to Riverside (Ohio) | 3,775.50 mi (6,076.08 km) |
| Rhondda to Riverton (Utah) | 4,764.23 mi (7,667.29 km) |
| Rhondda to Riverton (Wyoming) | 4,513.02 mi (7,263.00 km) |
| Rhondda to Riverview (Florida) | 4,273.67 mi (6,877.81 km) |
| Rhondda to Riverview (Michigan) | 3,631.54 mi (5,844.40 km) |
| Rhondda to Riviera Beach (Florida) | 4,231.33 mi (6,809.66 km) |
| Rhondda to Riviera Beach (Maryland) | 3,495.16 mi (5,624.92 km) |
| Rhondda to Roanoke (Virginia) | 3,721.28 mi (5,988.81 km) |
| Rhondda to Roanoke Rapids (North Carolina) | 3,664.02 mi (5,896.67 km) |
| Rhondda to Robbinsdale (Minnesota) | 3,888.38 mi (6,257.74 km) |
