| Boise to Baraboo (Wisconsin) | 1,321.39 mi (2,126.58 km) |
| Boise to Barberton (Ohio) | 1,765.58 mi (2,841.42 km) |
| Boise to Bardstown (Kentucky) | 1,650.39 mi (2,656.05 km) |
| Boise to Barrington (Illinois) | 1,419.66 mi (2,284.72 km) |
| Boise to Barstow (California) | 605.06 mi (973.75 km) |
| Boise to Bartlesville (Oklahoma) | 1,167.33 mi (1,878.64 km) |
| Boise to Bartlett (Illinois) | 1,418.55 mi (2,282.93 km) |
| Boise to Bartlett (Tennessee) | 1,515.46 mi (2,438.89 km) |
| Boise to Bartow (Florida) | 2,191.64 mi (3,527.10 km) |
| Boise to Batavia (Illinois) | 1,415.62 mi (2,278.22 km) |
| Boise to Batavia (New York) | 1,896.90 mi (3,052.76 km) |
| Boise to Batesville (Arkansas) | 1,409.22 mi (2,267.92 km) |
| Boise to Baton Rouge (Louisiana) | 1,646.10 mi (2,649.14 km) |
| Boise to Battle Creek (Michigan) | 1,561.30 mi (2,512.66 km) |
| Boise to Battle Ground (Washington) | 344.38 mi (554.23 km) |
