| Southborough to Beverly Hills (Florida) | 4,387.39 mi (7,060.82 km) |
| Southborough to Beverly Hills (Michigan) | 3,775.31 mi (6,075.77 km) |
| Southborough to Bexley (Ohio) | 3,878.64 mi (6,242.07 km) |
| Southborough to Biddeford (Maine) | 3,224.84 mi (5,189.88 km) |
| Southborough to Big Bear City (California) | 5,410.67 mi (8,707.63 km) |
| Southborough to Big Lake (Minnesota) | 4,038.59 mi (6,499.48 km) |
| Southborough to Big Spring (Texas) | 4,980.93 mi (8,016.04 km) |
| Southborough to Billings (Montana) | 4,514.54 mi (7,265.44 km) |
| Southborough to Biloxi (Mississippi) | 4,580.48 mi (7,371.58 km) |
| Southborough to Binghamton (New York) | 3,502.91 mi (5,637.39 km) |
| Southborough to Birmingham (Alabama) | 4,339.44 mi (6,983.65 km) |
| Southborough to Birmingham (Michigan) | 3,773.30 mi (6,072.54 km) |
| Southborough to Bismarck (North Dakota) | 4,210.32 mi (6,775.85 km) |
| Southborough to Bithlo (Florida) | 4,348.15 mi (6,997.67 km) |
| Southborough to Bixby (Oklahoma) | 4,576.79 mi (7,365.64 km) |
