| Porthcawl to Brownsburg (Indiana) | 3,855.83 mi (6,205.36 km) |
| Porthcawl to Brownsville (Florida) | 4,276.19 mi (6,881.86 km) |
| Porthcawl to Brownsville (Texas) | 4,986.60 mi (8,025.16 km) |
| Porthcawl to Brownwood (Texas) | 4,750.09 mi (7,644.53 km) |
| Porthcawl to Brunswick (Georgia) | 4,065.42 mi (6,542.66 km) |
| Porthcawl to Brunswick (Ohio) | 3,610.47 mi (5,810.48 km) |
| Porthcawl to Brushy Creek (Texas) | 4,763.22 mi (7,665.66 km) |
| Porthcawl to Bryan (Texas) | 4,701.43 mi (7,566.21 km) |
| Porthcawl to Bryant (Arkansas) | 4,347.64 mi (6,996.86 km) |
| Porthcawl to Bryn Mawr-Skyway (Washington) | 4,693.76 mi (7,553.88 km) |
| Porthcawl to Buckeye (Arizona) | 5,167.97 mi (8,317.04 km) |
| Porthcawl to Buckhall (Virginia) | 3,543.99 mi (5,703.50 km) |
| Porthcawl to Bucyrus (Ohio) | 3,676.09 mi (5,916.10 km) |
| Porthcawl to Buda (Texas) | 4,790.14 mi (7,708.99 km) |
| Porthcawl to Buena Park (California) | 5,328.35 mi (8,575.14 km) |
