| Porthcawl to Ridgeland (Mississippi) | 4,361.83 mi (7,019.68 km) |
| Porthcawl to Ridgewood (New Jersey) | 3,308.39 mi (5,324.34 km) |
| Porthcawl to Rifle (Colorado) | 4,670.27 mi (7,516.08 km) |
| Porthcawl to Rincon (Georgia) | 3,999.80 mi (6,437.05 km) |
| Porthcawl to Ringwood (New Jersey) | 3,309.82 mi (5,326.65 km) |
| Porthcawl to Río Grande (Puerto Rico) | 4,040.56 mi (6,502.66 km) |
| Porthcawl to Rio Grande City (Texas) | 5,021.56 mi (8,081.43 km) |
| Porthcawl to Rio Linda (California) | 5,166.12 mi (8,314.07 km) |
| Porthcawl to Rio Rancho (New Mexico) | 4,855.38 mi (7,813.98 km) |
| Porthcawl to Rio Rico (Arizona) | 5,214.65 mi (8,392.16 km) |
| Porthcawl to Ripon (California) | 5,210.13 mi (8,384.89 km) |
| Porthcawl to River Edge (New Jersey) | 3,307.67 mi (5,323.18 km) |
| Porthcawl to River Falls (Wisconsin) | 3,864.91 mi (6,219.97 km) |
| Porthcawl to River Forest (Illinois) | 3,818.01 mi (6,144.49 km) |
| Porthcawl to River Grove (Illinois) | 3,817.40 mi (6,143.50 km) |
