| Llantrisant to Rosemont (California) | 5,178.10 mi (8,333.34 km) |
| Llantrisant to Rosemount (Minnesota) | 3,895.69 mi (6,269.51 km) |
| Llantrisant to Rosenberg (Texas) | 4,747.62 mi (7,640.55 km) |
| Llantrisant to Roseville (California) | 5,164.36 mi (8,311.23 km) |
| Llantrisant to Roseville (Michigan) | 3,610.36 mi (5,810.31 km) |
| Llantrisant to Roseville (Minnesota) | 3,886.59 mi (6,254.86 km) |
| Llantrisant to Rossmoor (California) | 5,342.51 mi (8,597.95 km) |
| Llantrisant to Rossville (Maryland) | 3,487.74 mi (5,612.98 km) |
| Llantrisant to Roswell (Georgia) | 4,057.44 mi (6,529.82 km) |
| Llantrisant to Roswell (New Mexico) | 4,885.89 mi (7,863.09 km) |
| Llantrisant to Round Lake (Illinois) | 3,819.00 mi (6,146.08 km) |
| Llantrisant to Round Lake Beach (Illinois) | 3,816.43 mi (6,141.94 km) |
| Llantrisant to Round Rock (Texas) | 4,770.33 mi (7,677.11 km) |
| Llantrisant to Rowland Heights (California) | 5,325.93 mi (8,571.25 km) |
| Llantrisant to Rowlett (Texas) | 4,603.93 mi (7,409.31 km) |
