| Porthcawl to Harrison (Wisconsin) | 3,733.01 mi (6,007.70 km) |
| Porthcawl to Harrisonburg (Virginia) | 3,615.63 mi (5,818.79 km) |
| Porthcawl to Hartford (Connecticut) | 3,216.61 mi (5,176.64 km) |
| Porthcawl to Hartford (Wisconsin) | 3,775.11 mi (6,075.45 km) |
| Porthcawl to Hartselle (Alabama) | 4,132.60 mi (6,650.78 km) |
| Porthcawl to Hartsville (Tennessee) | 4,007.39 mi (6,449.28 km) |
| Porthcawl to Harvey (Illinois) | 3,824.57 mi (6,155.04 km) |
| Porthcawl to Harvey (Louisiana) | 4,485.07 mi (7,218.02 km) |
| Porthcawl to Hasbrouck Heights (New Jersey) | 3,311.89 mi (5,329.97 km) |
| Porthcawl to Haslett (Michigan) | 3,646.53 mi (5,868.52 km) |
| Porthcawl to Hastings (Minnesota) | 3,879.23 mi (6,243.02 km) |
| Porthcawl to Hastings (Nebraska) | 4,279.75 mi (6,887.59 km) |
| Porthcawl to Hattiesburg (Mississippi) | 4,383.32 mi (7,054.27 km) |
| Porthcawl to Hauppauge (New York) | 3,277.91 mi (5,275.28 km) |
| Porthcawl to Havelock (North Carolina) | 3,694.28 mi (5,945.36 km) |
