| Dorchester to Brownsburg (Indiana) | 3,926.79 mi (6,319.57 km) |
| Dorchester to Brownsville (Florida) | 4,337.12 mi (6,979.93 km) |
| Dorchester to Brownsville (Texas) | 5,055.85 mi (8,136.61 km) |
| Dorchester to Brownwood (Texas) | 4,821.79 mi (7,759.92 km) |
| Dorchester to Brunswick (Georgia) | 4,130.17 mi (6,646.87 km) |
| Dorchester to Brunswick (Ohio) | 3,680.74 mi (5,923.58 km) |
| Dorchester to Brushy Creek (Texas) | 4,834.16 mi (7,779.82 km) |
| Dorchester to Bryan (Texas) | 4,771.97 mi (7,679.75 km) |
| Dorchester to Bryant (Arkansas) | 4,418.37 mi (7,110.68 km) |
| Dorchester to Bryn Mawr-Skyway (Washington) | 4,769.10 mi (7,675.12 km) |
| Dorchester to Buckeye (Arizona) | 5,242.94 mi (8,437.70 km) |
| Dorchester to Buckhall (Virginia) | 3,611.43 mi (5,812.03 km) |
| Dorchester to Bucyrus (Ohio) | 3,746.50 mi (6,029.41 km) |
| Dorchester to Buda (Texas) | 4,860.97 mi (7,822.97 km) |
| Dorchester to Buena Park (California) | 5,403.92 mi (8,696.76 km) |
