| Llantrisant to Brownsburg (Indiana) | 3,866.62 mi (6,222.72 km) |
| Llantrisant to Brownsville (Florida) | 4,289.10 mi (6,902.64 km) |
| Llantrisant to Brownsville (Texas) | 4,997.91 mi (8,043.36 km) |
| Llantrisant to Brownwood (Texas) | 4,760.60 mi (7,661.44 km) |
| Llantrisant to Brunswick (Georgia) | 4,077.75 mi (6,562.50 km) |
| Llantrisant to Brunswick (Ohio) | 3,621.49 mi (5,828.22 km) |
| Llantrisant to Brushy Creek (Texas) | 4,774.01 mi (7,683.02 km) |
| Llantrisant to Bryan (Texas) | 4,712.35 mi (7,583.79 km) |
| Llantrisant to Bryant (Arkansas) | 4,358.51 mi (7,014.34 km) |
| Llantrisant to Bryn Mawr-Skyway (Washington) | 4,699.13 mi (7,562.52 km) |
| Llantrisant to Buckeye (Arizona) | 5,176.56 mi (8,330.87 km) |
| Llantrisant to Buckhall (Virginia) | 3,555.78 mi (5,722.48 km) |
| Llantrisant to Bucyrus (Ohio) | 3,687.07 mi (5,933.77 km) |
| Llantrisant to Buda (Texas) | 4,800.97 mi (7,726.41 km) |
| Llantrisant to Buena Park (California) | 5,336.14 mi (8,587.69 km) |
