| Porthcawl to Clarkston (Georgia) | 4,052.02 mi (6,521.09 km) |
| Porthcawl to Clarksville (Indiana) | 3,901.13 mi (6,278.27 km) |
| Porthcawl to Clarksville (Tennessee) | 4,046.81 mi (6,512.71 km) |
| Porthcawl to Clawson (Michigan) | 3,606.78 mi (5,804.56 km) |
| Porthcawl to Clay (Alabama) | 4,155.08 mi (6,686.95 km) |
| Porthcawl to Clayton (California) | 5,223.64 mi (8,406.64 km) |
| Porthcawl to Clayton (Missouri) | 4,066.99 mi (6,545.18 km) |
| Porthcawl to Clayton (North Carolina) | 3,724.52 mi (5,994.03 km) |
| Porthcawl to Clayton (Ohio) | 3,772.47 mi (6,071.21 km) |
| Porthcawl to Clearfield (Utah) | 4,731.88 mi (7,615.22 km) |
| Porthcawl to Clearlake (California) | 5,187.09 mi (8,347.81 km) |
| Porthcawl to Clearwater (Florida) | 4,275.49 mi (6,880.74 km) |
| Porthcawl to Cleburne (Texas) | 4,655.80 mi (7,492.79 km) |
| Porthcawl to Clemmons (North Carolina) | 3,787.80 mi (6,095.87 km) |
| Porthcawl to Clemson (South Carolina) | 3,951.42 mi (6,359.20 km) |
