| Middlesex to Blue Island (Illinois) | 689.45 mi (1,109.56 km) |
| Middlesex to Blue Springs (Missouri) | 1,052.91 mi (1,694.49 km) |
| Middlesex to Bluffdale (Utah) | 1,951.09 mi (3,139.98 km) |
| Middlesex to Bluffton (Indiana) | 559.14 mi (899.85 km) |
| Middlesex to Bluffton (South Carolina) | 678.96 mi (1,092.68 km) |
| Middlesex to Blythe (California) | 2,242.30 mi (3,608.63 km) |
| Middlesex to Blytheville (Arkansas) | 893.70 mi (1,438.28 km) |
| Middlesex to Boca Raton (Florida) | 1,032.30 mi (1,661.33 km) |
| Middlesex to Boerne (Texas) | 1,550.70 mi (2,495.61 km) |
| Middlesex to Bogalusa (Louisiana) | 1,093.21 mi (1,759.35 km) |
| Middlesex to Boiling Springs (South Carolina) | 558.64 mi (899.05 km) |
| Middlesex to Boise (Idaho) | 2,127.34 mi (3,423.63 km) |
| Middlesex to Bolingbrook (Illinois) | 711.24 mi (1,144.62 km) |
| Middlesex to Bolivar (Missouri) | 1,032.82 mi (1,662.16 km) |
| Middlesex to Bon Air (Virginia) | 267.76 mi (430.92 km) |
