| Middlesex to Baraboo (Wisconsin) | 805.96 mi (1,297.07 km) |
| Middlesex to Barberton (Ohio) | 372.64 mi (599.71 km) |
| Middlesex to Bardstown (Kentucky) | 616.20 mi (991.67 km) |
| Middlesex to Barrington (Illinois) | 714.22 mi (1,149.42 km) |
| Middlesex to Barstow (California) | 2,335.45 mi (3,758.55 km) |
| Middlesex to Bartlesville (Oklahoma) | 1,183.85 mi (1,905.23 km) |
| Middlesex to Bartlett (Illinois) | 717.50 mi (1,154.70 km) |
| Middlesex to Bartlett (Tennessee) | 911.37 mi (1,466.71 km) |
| Middlesex to Bartow (Florida) | 970.34 mi (1,561.61 km) |
| Middlesex to Batavia (Illinois) | 722.38 mi (1,162.56 km) |
| Middlesex to Batavia (New York) | 252.90 mi (407.01 km) |
| Middlesex to Batesville (Arkansas) | 985.53 mi (1,586.06 km) |
| Middlesex to Baton Rouge (Louisiana) | 1,164.95 mi (1,874.81 km) |
| Middlesex to Battle Creek (Michigan) | 567.93 mi (913.99 km) |
| Middlesex to Battle Ground (Washington) | 2,410.18 mi (3,878.80 km) |
