| Porthcawl to Caguas (Puerto Rico) | 4,056.79 mi (6,528.77 km) |
| Porthcawl to Cahokia (Illinois) | 4,064.83 mi (6,541.72 km) |
| Porthcawl to Calabasas (California) | 5,334.67 mi (8,585.32 km) |
| Porthcawl to Caldwell (Idaho) | 4,742.97 mi (7,633.07 km) |
| Porthcawl to Caledonia (Wisconsin) | 3,779.37 mi (6,082.32 km) |
| Porthcawl to Calera (Alabama) | 4,188.33 mi (6,740.47 km) |
| Porthcawl to Calexico (California) | 5,308.57 mi (8,543.32 km) |
| Porthcawl to Calhoun (Georgia) | 4,048.22 mi (6,514.98 km) |
| Porthcawl to California (Maryland) | 3,523.51 mi (5,670.54 km) |
| Porthcawl to California City (California) | 5,250.98 mi (8,450.64 km) |
| Porthcawl to Callaway (Florida) | 4,285.94 mi (6,897.56 km) |
| Porthcawl to Calumet City (Illinois) | 3,820.35 mi (6,148.26 km) |
| Porthcawl to Calverton (Maryland) | 3,508.61 mi (5,646.57 km) |
| Porthcawl to Camano (Washington) | 4,661.50 mi (7,501.96 km) |
| Porthcawl to Camarillo (California) | 5,341.84 mi (8,596.87 km) |
