| Penarth to Rancho Cordova (California) | 5,185.19 mi (8,344.75 km) |
| Penarth to Rancho Cucamonga (California) | 5,318.24 mi (8,558.89 km) |
| Penarth to Rancho Mirage (California) | 5,300.21 mi (8,529.87 km) |
| Penarth to Rancho Palos Verdes (California) | 5,365.52 mi (8,634.97 km) |
| Penarth to Rancho San Diego (California) | 5,372.93 mi (8,646.90 km) |
| Penarth to Rancho Santa Margarita (California) | 5,347.00 mi (8,605.17 km) |
| Penarth to Randallstown (Maryland) | 3,511.17 mi (5,650.69 km) |
| Penarth to Rantoul (Illinois) | 3,925.80 mi (6,317.96 km) |
| Penarth to Rapid City (South Dakota) | 4,300.92 mi (6,921.66 km) |
| Penarth to Ravenna (Ohio) | 3,613.17 mi (5,814.84 km) |
| Penarth to Raymondville (Texas) | 4,996.67 mi (8,041.36 km) |
| Penarth to Raymore (Missouri) | 4,240.87 mi (6,825.02 km) |
| Penarth to Raytown (Missouri) | 4,231.78 mi (6,810.39 km) |
| Penarth to Reading (Ohio) | 3,828.13 mi (6,160.78 km) |
| Penarth to Reading (Pennsylvania) | 3,432.97 mi (5,524.83 km) |
