| Rhondda to Reidsville (North Carolina) | 3,752.86 mi (6,039.64 km) |
| Rhondda to Reisterstown (Maryland) | 3,494.12 mi (5,623.24 km) |
| Rhondda to Rendon (Texas) | 4,644.23 mi (7,474.16 km) |
| Rhondda to Reno (Nevada) | 5,070.12 mi (8,159.57 km) |
| Rhondda to Renton (Washington) | 4,693.61 mi (7,553.63 km) |
| Rhondda to Republic (Missouri) | 4,267.53 mi (6,867.93 km) |
| Rhondda to Reston (Virginia) | 3,538.36 mi (5,694.43 km) |
| Rhondda to Revere (Massachusetts) | 3,129.16 mi (5,035.89 km) |
| Rhondda to Rexburg (Idaho) | 4,582.60 mi (7,374.98 km) |
| Rhondda to Reynoldsburg (Ohio) | 3,714.46 mi (5,977.85 km) |
| Rhondda to Rialto (California) | 5,296.37 mi (8,523.68 km) |
| Rhondda to Richardson (Texas) | 4,603.61 mi (7,408.79 km) |
| Rhondda to Richfield (Minnesota) | 3,893.43 mi (6,265.88 km) |
| Rhondda to Richfield (Wisconsin) | 3,779.80 mi (6,083.00 km) |
| Rhondda to Richland (Washington) | 4,678.46 mi (7,529.26 km) |
