| Porthcawl to Cicero (Illinois) | 3,817.97 mi (6,144.43 km) |
| Porthcawl to Cimarron Hills (Colorado) | 4,596.77 mi (7,397.78 km) |
| Porthcawl to Cincinnati (Ohio) | 3,812.73 mi (6,136.00 km) |
| Porthcawl to Cinco Ranch (Texas) | 4,724.08 mi (7,602.67 km) |
| Porthcawl to Circleville (Ohio) | 3,728.35 mi (6,000.21 km) |
| Porthcawl to Citrus (California) | 5,309.96 mi (8,545.55 km) |
| Porthcawl to Citrus Heights (California) | 5,160.97 mi (8,305.78 km) |
| Porthcawl to Citrus Park (Florida) | 4,262.37 mi (6,859.63 km) |
| Porthcawl to Claiborne (Louisiana) | 4,439.07 mi (7,144.00 km) |
| Porthcawl to Claremont (California) | 5,303.60 mi (8,535.32 km) |
| Porthcawl to Claremont (New Hampshire) | 3,136.67 mi (5,047.98 km) |
| Porthcawl to Claremore (Oklahoma) | 4,385.92 mi (7,058.46 km) |
| Porthcawl to Clarksburg (Maryland) | 3,514.35 mi (5,655.79 km) |
| Porthcawl to Clarksburg (West Virginia) | 3,636.96 mi (5,853.12 km) |
| Porthcawl to Clarksdale (Mississippi) | 4,291.56 mi (6,906.59 km) |
