| Boise to Blue Island (Illinois) | 1,450.35 mi (2,334.11 km) |
| Boise to Blue Springs (Missouri) | 1,179.05 mi (1,897.49 km) |
| Boise to Bluffdale (Utah) | 308.43 mi (496.36 km) |
| Boise to Bluffton (Indiana) | 1,593.21 mi (2,564.02 km) |
| Boise to Bluffton (South Carolina) | 2,059.74 mi (3,314.84 km) |
| Boise to Blythe (California) | 694.88 mi (1,118.30 km) |
| Boise to Blytheville (Arkansas) | 1,487.39 mi (2,393.72 km) |
| Boise to Boca Raton (Florida) | 2,339.35 mi (3,764.82 km) |
| Boise to Boerne (Texas) | 1,355.21 mi (2,181.00 km) |
| Boise to Bogalusa (Louisiana) | 1,689.09 mi (2,718.32 km) |
| Boise to Boiling Springs (South Carolina) | 1,908.33 mi (3,071.16 km) |
| Boise to Bolingbrook (Illinois) | 1,428.78 mi (2,299.39 km) |
| Boise to Bolivar (Missouri) | 1,261.54 mi (2,030.25 km) |
| Boise to Bon Air (Virginia) | 2,053.04 mi (3,304.05 km) |
| Boise to Bonham (Texas) | 1,279.24 mi (2,058.74 km) |
