| Llantrisant to Reidsville (North Carolina) | 3,755.99 mi (6,044.68 km) |
| Llantrisant to Reisterstown (Maryland) | 3,497.33 mi (5,628.41 km) |
| Llantrisant to Rendon (Texas) | 4,647.99 mi (7,480.22 km) |
| Llantrisant to Reno (Nevada) | 5,074.97 mi (8,167.38 km) |
| Llantrisant to Renton (Washington) | 4,698.70 mi (7,561.83 km) |
| Llantrisant to Republic (Missouri) | 4,271.36 mi (6,874.09 km) |
| Llantrisant to Reston (Virginia) | 3,541.56 mi (5,699.59 km) |
| Llantrisant to Revere (Massachusetts) | 3,132.34 mi (5,041.01 km) |
| Llantrisant to Rexburg (Idaho) | 4,587.35 mi (7,382.63 km) |
| Llantrisant to Reynoldsburg (Ohio) | 3,717.99 mi (5,983.53 km) |
| Llantrisant to Rialto (California) | 5,301.00 mi (8,531.14 km) |
| Llantrisant to Richardson (Texas) | 4,607.36 mi (7,414.83 km) |
| Llantrisant to Richfield (Minnesota) | 3,897.67 mi (6,272.69 km) |
| Llantrisant to Richfield (Wisconsin) | 3,783.76 mi (6,089.38 km) |
| Llantrisant to Richland (Washington) | 4,683.47 mi (7,537.32 km) |
