| Southborough to Bear (Delaware) | 3,601.19 mi (5,795.56 km) |
| Southborough to Beatrice (Nebraska) | 4,392.25 mi (7,068.64 km) |
| Southborough to Beaufort (South Carolina) | 4,141.38 mi (6,664.90 km) |
| Southborough to Beaumont (California) | 5,436.39 mi (8,749.02 km) |
| Southborough to Beaumont (Texas) | 4,808.28 mi (7,738.17 km) |
| Southborough to Beaver Dam (Wisconsin) | 3,945.91 mi (6,350.32 km) |
| Southborough to Beavercreek (Ohio) | 3,934.11 mi (6,331.33 km) |
| Southborough to Beaverton (Oregon) | 4,948.51 mi (7,963.85 km) |
| Southborough to Beckley (West Virginia) | 3,908.44 mi (6,290.03 km) |
| Southborough to Bedford (Indiana) | 4,070.47 mi (6,550.79 km) |
| Southborough to Bedford (Ohio) | 3,758.75 mi (6,049.12 km) |
| Southborough to Bedford (Texas) | 4,783.39 mi (7,698.12 km) |
| Southborough to Bedford Heights (Ohio) | 3,756.99 mi (6,046.29 km) |
| Southborough to Beech Grove (Indiana) | 4,014.54 mi (6,460.78 km) |
| Southborough to Beeville (Texas) | 5,038.66 mi (8,108.93 km) |
