| Porthcawl to Burlingame (California) | 5,257.32 mi (8,460.84 km) |
| Porthcawl to Burlington (Iowa) | 3,995.81 mi (6,430.63 km) |
| Porthcawl to Burlington (Kentucky) | 3,826.84 mi (6,158.71 km) |
| Porthcawl to Burlington (North Carolina) | 3,747.69 mi (6,031.32 km) |
| Porthcawl to Burlington (Vermont) | 3,129.01 mi (5,035.66 km) |
| Porthcawl to Burlington (Wisconsin) | 3,800.20 mi (6,115.83 km) |
| Porthcawl to Burnsville (Minnesota) | 3,893.36 mi (6,265.76 km) |
| Porthcawl to Burr Ridge (Illinois) | 3,828.57 mi (6,161.48 km) |
| Porthcawl to Burton (Michigan) | 3,605.07 mi (5,801.79 km) |
| Porthcawl to Burtonsville (Maryland) | 3,505.48 mi (5,641.52 km) |
| Porthcawl to Butler (Pennsylvania) | 3,549.93 mi (5,713.06 km) |
| Porthcawl to Butte (Montana) | 4,498.08 mi (7,238.96 km) |
| Porthcawl to Byram (Mississippi) | 4,379.08 mi (7,047.44 km) |
| Porthcawl to Cabot (Arkansas) | 4,311.38 mi (6,938.50 km) |
| Porthcawl to Cadillac (Michigan) | 3,620.55 mi (5,826.71 km) |
