| Llantwit Major to Brownsburg (Indiana) | 3,866.34 mi (6,222.28 km) |
| Llantwit Major to Brownsville (Florida) | 4,286.01 mi (6,897.66 km) |
| Llantwit Major to Brownsville (Texas) | 4,997.04 mi (8,041.95 km) |
| Llantwit Major to Brownwood (Texas) | 4,760.63 mi (7,661.50 km) |
| Llantwit Major to Brunswick (Georgia) | 4,075.55 mi (6,558.97 km) |
| Llantwit Major to Brunswick (Ohio) | 3,620.95 mi (5,827.36 km) |
| Llantwit Major to Brushy Creek (Texas) | 4,773.73 mi (7,682.58 km) |
| Llantwit Major to Bryan (Texas) | 4,711.92 mi (7,583.11 km) |
| Llantwit Major to Bryant (Arkansas) | 4,358.15 mi (7,013.77 km) |
| Llantwit Major to Bryn Mawr-Skyway (Washington) | 4,703.60 mi (7,569.72 km) |
| Llantwit Major to Buckeye (Arizona) | 5,178.47 mi (8,333.95 km) |
| Llantwit Major to Buckhall (Virginia) | 3,554.31 mi (5,720.11 km) |
| Llantwit Major to Bucyrus (Ohio) | 3,686.58 mi (5,932.98 km) |
| Llantwit Major to Buda (Texas) | 4,800.65 mi (7,725.90 km) |
| Llantwit Major to Buena Park (California) | 5,338.74 mi (8,591.88 km) |
