| Porthcawl to Cookeville (Tennessee) | 3,992.74 mi (6,425.69 km) |
| Porthcawl to Coolidge (Arizona) | 5,155.41 mi (8,296.84 km) |
| Porthcawl to Coon Rapids (Minnesota) | 3,875.67 mi (6,237.29 km) |
| Porthcawl to Cooper City (Florida) | 4,266.81 mi (6,866.77 km) |
| Porthcawl to Coos Bay (Oregon) | 4,981.75 mi (8,017.35 km) |
| Porthcawl to Copiague (New York) | 3,291.77 mi (5,297.60 km) |
| Porthcawl to Coppell (Texas) | 4,608.18 mi (7,416.15 km) |
| Porthcawl to Copperas Cove (Texas) | 4,738.92 mi (7,626.55 km) |
| Porthcawl to Coral Gables (Florida) | 4,283.38 mi (6,893.44 km) |
| Porthcawl to Coral Springs (Florida) | 4,254.43 mi (6,846.84 km) |
| Porthcawl to Coral Terrace (Florida) | 4,282.67 mi (6,892.28 km) |
| Porthcawl to Coralville (Iowa) | 3,972.18 mi (6,392.61 km) |
| Porthcawl to Coram (New York) | 3,266.89 mi (5,257.54 km) |
| Porthcawl to Corcoran (California) | 5,254.09 mi (8,455.64 km) |
| Porthcawl to Cordele (Georgia) | 4,122.09 mi (6,633.87 km) |
