| Southborough to Burlingame (California) | 5,392.57 mi (8,678.50 km) |
| Southborough to Burlington (Iowa) | 4,156.99 mi (6,690.02 km) |
| Southborough to Burlington (Kentucky) | 3,993.07 mi (6,426.22 km) |
| Southborough to Burlington (North Carolina) | 3,917.70 mi (6,304.93 km) |
| Southborough to Burlington (Vermont) | 3,296.29 mi (5,304.86 km) |
| Southborough to Burlington (Wisconsin) | 3,961.44 mi (6,375.32 km) |
| Southborough to Burnsville (Minnesota) | 4,049.05 mi (6,516.32 km) |
| Southborough to Burr Ridge (Illinois) | 3,990.88 mi (6,422.70 km) |
| Southborough to Burton (Michigan) | 3,768.70 mi (6,065.14 km) |
| Southborough to Burtonsville (Maryland) | 3,674.88 mi (5,914.15 km) |
| Southborough to Butler (Pennsylvania) | 3,717.11 mi (5,982.11 km) |
| Southborough to Butte (Montana) | 4,635.04 mi (7,459.37 km) |
| Southborough to Byram (Mississippi) | 4,546.77 mi (7,317.33 km) |
| Southborough to Cabot (Arkansas) | 4,476.54 mi (7,204.30 km) |
| Southborough to Cadillac (Michigan) | 3,781.97 mi (6,086.50 km) |
