| Rhondda to Roy (Utah) | 4,732.01 mi (7,615.44 km) |
| Rhondda to Royal Kunia (Hawaii) | 7,162.37 mi (11,526.72 km) |
| Rhondda to Royal Oak (Michigan) | 3,615.14 mi (5,818.01 km) |
| Rhondda to Royal Palm Beach (Florida) | 4,241.58 mi (6,826.17 km) |
| Rhondda to Royse City (Texas) | 4,588.02 mi (7,383.70 km) |
| Rhondda to Ruskin (Florida) | 4,284.49 mi (6,895.22 km) |
| Rhondda to Russellville (Alabama) | 4,169.45 mi (6,710.08 km) |
| Rhondda to Russellville (Arkansas) | 4,347.65 mi (6,996.86 km) |
| Rhondda to Ruston (Louisiana) | 4,464.52 mi (7,184.95 km) |
| Rhondda to Rutherford (New Jersey) | 3,323.54 mi (5,348.73 km) |
| Rhondda to Rutland (Vermont) | 3,161.72 mi (5,088.30 km) |
| Rhondda to Sabana Grande (Puerto Rico) | 4,116.97 mi (6,625.62 km) |
| Rhondda to Sachse (Texas) | 4,598.46 mi (7,400.51 km) |
| Rhondda to Saco (Maine) | 3,061.85 mi (4,927.57 km) |
| Rhondda to Sacramento (California) | 5,175.57 mi (8,329.27 km) |
