| Llantrisant to Romeoville (Illinois) | 3,851.20 mi (6,197.91 km) |
| Llantrisant to Romulus (Michigan) | 3,639.73 mi (5,857.58 km) |
| Llantrisant to Ronkonkoma (New York) | 3,286.94 mi (5,289.82 km) |
| Llantrisant to Roosevelt (New York) | 3,311.17 mi (5,328.82 km) |
| Llantrisant to Rosamond (California) | 5,286.35 mi (8,507.56 km) |
| Llantrisant to Rosaryville (Maryland) | 3,528.24 mi (5,678.15 km) |
| Llantrisant to Roscoe (Illinois) | 3,849.89 mi (6,195.81 km) |
| Llantrisant to Rose Hill (Virginia) | 3,538.98 mi (5,695.44 km) |
| Llantrisant to Roseburg (Oregon) | 4,971.33 mi (8,000.59 km) |
| Llantrisant to Rosedale (California) | 5,289.22 mi (8,512.18 km) |
| Llantrisant to Rosedale (Maryland) | 3,490.39 mi (5,617.25 km) |
| Llantrisant to Roselle (Illinois) | 3,834.73 mi (6,171.41 km) |
| Llantrisant to Roselle (New Jersey) | 3,340.23 mi (5,375.58 km) |
| Llantrisant to Roselle Park (New Jersey) | 3,339.97 mi (5,375.16 km) |
| Llantrisant to Rosemead (California) | 5,326.80 mi (8,572.66 km) |
