| Porthcawl to Blue Springs (Missouri) | 4,202.10 mi (6,762.62 km) |
| Porthcawl to Bluffdale (Utah) | 4,762.60 mi (7,664.66 km) |
| Porthcawl to Bluffton (Indiana) | 3,766.49 mi (6,061.57 km) |
| Porthcawl to Bluffton (South Carolina) | 3,990.96 mi (6,422.83 km) |
| Porthcawl to Blythe (California) | 5,226.42 mi (8,411.12 km) |
| Porthcawl to Blytheville (Arkansas) | 4,180.18 mi (6,727.35 km) |
| Porthcawl to Boca Raton (Florida) | 4,242.72 mi (6,828.00 km) |
| Porthcawl to Boerne (Texas) | 4,840.12 mi (7,789.41 km) |
| Porthcawl to Bogalusa (Louisiana) | 4,431.94 mi (7,132.52 km) |
| Porthcawl to Boiling Springs (South Carolina) | 3,899.83 mi (6,276.18 km) |
| Porthcawl to Boise (Idaho) | 4,732.18 mi (7,615.70 km) |
| Porthcawl to Bolingbrook (Illinois) | 3,838.29 mi (6,177.13 km) |
| Porthcawl to Bolivar (Missouri) | 4,237.41 mi (6,819.45 km) |
| Porthcawl to Bon Air (Virginia) | 3,603.04 mi (5,798.54 km) |
| Porthcawl to Bonham (Texas) | 4,545.13 mi (7,314.68 km) |
