| Llantrisant to Robertsville (New Jersey) | 3,355.03 mi (5,399.40 km) |
| Llantrisant to Robinson (Texas) | 4,701.31 mi (7,566.02 km) |
| Llantrisant to Robstown (Texas) | 4,912.43 mi (7,905.80 km) |
| Llantrisant to Rochester (Michigan) | 3,609.71 mi (5,809.27 km) |
| Llantrisant to Rochester (Minnesota) | 3,907.67 mi (6,288.79 km) |
| Llantrisant to Rochester (New Hampshire) | 3,095.83 mi (4,982.26 km) |
| Llantrisant to Rochester (New York) | 3,370.53 mi (5,424.35 km) |
| Llantrisant to Rochester Hills (Michigan) | 3,612.11 mi (5,813.14 km) |
| Llantrisant to Rock Hill (South Carolina) | 3,877.10 mi (6,239.58 km) |
| Llantrisant to Rock Island (Illinois) | 3,954.21 mi (6,363.68 km) |
| Llantrisant to Rock Springs (Wyoming) | 4,620.18 mi (7,435.46 km) |
| Llantrisant to Rockford (Illinois) | 3,859.61 mi (6,211.44 km) |
| Llantrisant to Rockledge (Florida) | 4,185.33 mi (6,735.64 km) |
| Llantrisant to Rocklin (California) | 5,160.08 mi (8,304.34 km) |
| Llantrisant to Rockport (Texas) | 4,876.25 mi (7,847.56 km) |
