| Middlesex to Beacon (New York) | 70.01 mi (112.66 km) |
| Middlesex to Bear (Delaware) | 90.81 mi (146.14 km) |
| Middlesex to Beatrice (Nebraska) | 1,167.09 mi (1,878.25 km) |
| Middlesex to Beaufort (South Carolina) | 658.16 mi (1,059.20 km) |
| Middlesex to Beaumont (California) | 2,357.90 mi (3,794.68 km) |
| Middlesex to Beaumont (Texas) | 1,318.62 mi (2,122.11 km) |
| Middlesex to Beaver Dam (Wisconsin) | 761.14 mi (1,224.94 km) |
| Middlesex to Beavercreek (Ohio) | 508.03 mi (817.59 km) |
| Middlesex to Beaverton (Oregon) | 2,426.65 mi (3,905.32 km) |
| Middlesex to Beckley (West Virginia) | 406.26 mi (653.82 km) |
| Middlesex to Bedford (Indiana) | 647.52 mi (1,042.09 km) |
| Middlesex to Bedford (Ohio) | 371.15 mi (597.30 km) |
| Middlesex to Bedford (Texas) | 1,357.61 mi (2,184.86 km) |
| Middlesex to Bedford Heights (Ohio) | 369.66 mi (594.91 km) |
| Middlesex to Beech Grove (Indiana) | 614.34 mi (988.69 km) |
