| Porthcawl to Culpeper (Virginia) | 3,578.09 mi (5,758.38 km) |
| Porthcawl to Culver City (California) | 5,333.06 mi (8,582.73 km) |
| Porthcawl to Cumberland (Maryland) | 3,556.81 mi (5,724.14 km) |
| Porthcawl to Cupertino (California) | 5,262.78 mi (8,469.63 km) |
| Porthcawl to Cutler Bay (Florida) | 4,292.52 mi (6,908.14 km) |
| Porthcawl to Cutlerville (Michigan) | 3,692.28 mi (5,942.15 km) |
| Porthcawl to Cuyahoga Falls (Ohio) | 3,602.10 mi (5,797.03 km) |
| Porthcawl to Cypress (California) | 5,331.73 mi (8,580.60 km) |
| Porthcawl to Cypress Gardens (Florida) | 4,228.67 mi (6,805.39 km) |
| Porthcawl to Cypress Lake (Florida) | 4,310.85 mi (6,937.65 km) |
| Porthcawl to D'Iberville (Mississippi) | 4,407.90 mi (7,093.83 km) |
| Porthcawl to Dakota Ridge (Colorado) | 4,573.18 mi (7,359.82 km) |
| Porthcawl to Dale City (Virginia) | 3,543.19 mi (5,702.22 km) |
| Porthcawl to Dallas (Georgia) | 4,071.85 mi (6,553.01 km) |
| Porthcawl to Dallas (Oregon) | 4,868.12 mi (7,834.48 km) |
