| Cwmbran to Brownsburg (Indiana) | 3,877.57 mi (6,240.34 km) |
| Cwmbran to Brownsville (Florida) | 4,303.20 mi (6,925.32 km) |
| Cwmbran to Brownsville (Texas) | 5,009.58 mi (8,062.15 km) |
| Cwmbran to Brownwood (Texas) | 4,771.14 mi (7,678.41 km) |
| Cwmbran to Brunswick (Georgia) | 4,090.93 mi (6,583.71 km) |
| Cwmbran to Brunswick (Ohio) | 3,632.77 mi (5,846.38 km) |
| Cwmbran to Brushy Creek (Texas) | 4,784.94 mi (7,700.62 km) |
| Cwmbran to Bryan (Texas) | 4,723.47 mi (7,601.68 km) |
| Cwmbran to Bryant (Arkansas) | 4,369.56 mi (7,032.12 km) |
| Cwmbran to Bryn Mawr-Skyway (Washington) | 4,702.89 mi (7,568.58 km) |
| Cwmbran to Buckeye (Arizona) | 5,184.50 mi (8,343.64 km) |
| Cwmbran to Buckhall (Virginia) | 3,568.17 mi (5,742.41 km) |
| Cwmbran to Bucyrus (Ohio) | 3,698.29 mi (5,951.82 km) |
| Cwmbran to Buda (Texas) | 4,811.95 mi (7,744.09 km) |
| Cwmbran to Buena Park (California) | 5,343.01 mi (8,598.75 km) |
