| Witham to Brownsburg (Indiana) | 4,016.08 mi (6,463.26 km) |
| Witham to Brownsville (Florida) | 4,456.43 mi (7,171.92 km) |
| Witham to Brownsville (Texas) | 5,151.80 mi (8,291.02 km) |
| Witham to Brownwood (Texas) | 4,907.09 mi (7,897.21 km) |
| Witham to Brunswick (Georgia) | 4,240.59 mi (6,824.58 km) |
| Witham to Brunswick (Ohio) | 3,773.19 mi (6,072.36 km) |
| Witham to Brushy Creek (Texas) | 4,923.14 mi (7,923.03 km) |
| Witham to Bryan (Texas) | 4,862.73 mi (7,825.81 km) |
| Witham to Bryant (Arkansas) | 4,508.50 mi (7,255.73 km) |
| Witham to Bryn Mawr-Skyway (Washington) | 4,792.31 mi (7,712.47 km) |
| Witham to Buckeye (Arizona) | 5,303.88 mi (8,535.77 km) |
| Witham to Buckhall (Virginia) | 3,714.27 mi (5,977.53 km) |
| Witham to Bucyrus (Ohio) | 3,838.35 mi (6,177.23 km) |
| Witham to Buda (Texas) | 4,950.45 mi (7,966.97 km) |
| Witham to Buena Park (California) | 5,455.03 mi (8,779.03 km) |
