| Porthcawl to Commerce City (Colorado) | 4,550.25 mi (7,322.91 km) |
| Porthcawl to Compton (California) | 5,333.77 mi (8,583.87 km) |
| Porthcawl to Comstock Park (Michigan) | 3,683.45 mi (5,927.94 km) |
| Porthcawl to Concord (California) | 5,224.03 mi (8,407.27 km) |
| Porthcawl to Concord (Missouri) | 4,074.35 mi (6,557.04 km) |
| Porthcawl to Concord (New Hampshire) | 3,110.76 mi (5,006.28 km) |
| Porthcawl to Concord (North Carolina) | 3,827.91 mi (6,160.43 km) |
| Porthcawl to Conneaut (Ohio) | 3,530.62 mi (5,681.98 km) |
| Porthcawl to Connersville (Indiana) | 3,814.49 mi (6,138.83 km) |
| Porthcawl to Conroe (Texas) | 4,682.97 mi (7,536.52 km) |
| Porthcawl to Converse (Texas) | 4,837.73 mi (7,785.58 km) |
| Porthcawl to Conway (Arkansas) | 4,324.07 mi (6,958.92 km) |
| Porthcawl to Conway (Florida) | 4,189.21 mi (6,741.88 km) |
| Porthcawl to Conway (South Carolina) | 3,834.24 mi (6,170.62 km) |
| Porthcawl to Conyers (Georgia) | 4,049.01 mi (6,516.25 km) |
