| Porthcawl to Castle Rock (Colorado) | 4,575.68 mi (7,363.85 km) |
| Porthcawl to Castro Valley (California) | 5,240.93 mi (8,434.45 km) |
| Porthcawl to Catalina Foothills (Arizona) | 5,166.82 mi (8,315.19 km) |
| Porthcawl to Cataño (Puerto Rico) | 4,050.41 mi (6,518.50 km) |
| Porthcawl to Cathedral City (California) | 5,277.67 mi (8,493.59 km) |
| Porthcawl to Catonsville (Maryland) | 3,490.99 mi (5,618.20 km) |
| Porthcawl to Cave Spring (Virginia) | 3,717.18 mi (5,982.23 km) |
| Porthcawl to Cayce (South Carolina) | 3,912.91 mi (6,297.21 km) |
| Porthcawl to Cayey (Puerto Rico) | 4,068.22 mi (6,547.17 km) |
| Porthcawl to Cedar City (Utah) | 4,951.81 mi (7,969.17 km) |
| Porthcawl to Cedar Falls (Iowa) | 3,966.40 mi (6,383.30 km) |
| Porthcawl to Cedar Hill (Texas) | 4,626.44 mi (7,445.54 km) |
| Porthcawl to Cedar Lake (Indiana) | 3,827.10 mi (6,159.11 km) |
| Porthcawl to Cedar Mill (Oregon) | 4,819.12 mi (7,755.62 km) |
| Porthcawl to Cedar Park (Texas) | 4,766.55 mi (7,671.02 km) |
