| Porthcawl to Chantilly (Virginia) | 3,536.67 mi (5,691.72 km) |
| Porthcawl to Chaparral (New Mexico) | 5,016.69 mi (8,073.59 km) |
| Porthcawl to Chapel Hill (North Carolina) | 3,736.70 mi (6,013.64 km) |
| Porthcawl to Charleston (Illinois) | 3,942.92 mi (6,345.51 km) |
| Porthcawl to Charleston (South Carolina) | 3,921.63 mi (6,311.26 km) |
| Porthcawl to Charleston (West Virginia) | 3,732.64 mi (6,007.10 km) |
| Porthcawl to Charlotte (North Carolina) | 3,844.59 mi (6,187.27 km) |
| Porthcawl to Charlottesville (Virginia) | 3,617.54 mi (5,821.87 km) |
| Porthcawl to Chaska (Minnesota) | 3,903.08 mi (6,281.41 km) |
| Porthcawl to Chatham (Illinois) | 3,993.50 mi (6,426.92 km) |
| Porthcawl to Chattanooga (Tennessee) | 4,033.44 mi (6,491.19 km) |
| Porthcawl to Cheat Lake (West Virginia) | 3,600.96 mi (5,795.19 km) |
| Porthcawl to Chelsea (Alabama) | 4,173.85 mi (6,717.16 km) |
| Porthcawl to Chelsea (Massachusetts) | 3,122.64 mi (5,025.40 km) |
| Porthcawl to Cheney (Washington) | 4,561.94 mi (7,341.73 km) |
