| Southborough to Belvedere Park (Georgia) | 4,225.26 mi (6,799.90 km) |
| Southborough to Belvidere (Illinois) | 4,003.32 mi (6,442.72 km) |
| Southborough to Bemidji (Minnesota) | 3,978.50 mi (6,402.78 km) |
| Southborough to Benbrook (Texas) | 4,804.73 mi (7,732.47 km) |
| Southborough to Bend (Oregon) | 4,988.83 mi (8,028.75 km) |
| Southborough to Benicia (California) | 5,357.97 mi (8,622.82 km) |
| Southborough to Bensenville (Illinois) | 3,982.09 mi (6,408.56 km) |
| Southborough to Bensville (Maryland) | 3,700.15 mi (5,954.82 km) |
| Southborough to Benton (Arkansas) | 4,517.80 mi (7,270.69 km) |
| Southborough to Bentonville (Arkansas) | 4,493.21 mi (7,231.13 km) |
| Southborough to Berea (Kentucky) | 4,042.91 mi (6,506.44 km) |
| Southborough to Berea (Ohio) | 3,772.72 mi (6,071.61 km) |
| Southborough to Berea (South Carolina) | 4,097.31 mi (6,593.98 km) |
| Southborough to Bergenfield (New Jersey) | 3,475.55 mi (5,593.35 km) |
| Southborough to Berkeley (California) | 5,373.25 mi (8,647.41 km) |
