| Boise to Bridgeton (Missouri) | 1,376.60 mi (2,215.42 km) |
| Boise to Bridgetown (Ohio) | 1,656.19 mi (2,665.38 km) |
| Boise to Bridgeview (Illinois) | 1,442.62 mi (2,321.68 km) |
| Boise to Brigham City (Utah) | 257.58 mi (414.54 km) |
| Boise to Brighton (Colorado) | 639.52 mi (1,029.21 km) |
| Boise to Bristol (Connecticut) | 2,179.25 mi (3,507.16 km) |
| Boise to Bristol (Tennessee) | 1,848.78 mi (2,975.32 km) |
| Boise to Bristol (Virginia) | 1,849.69 mi (2,976.80 km) |
| Boise to Broadlands (Virginia) | 2,015.48 mi (3,243.59 km) |
| Boise to Broadview Heights (Ohio) | 1,755.58 mi (2,825.33 km) |
| Boise to Brock Hall (Maryland) | 2,057.95 mi (3,311.94 km) |
| Boise to Brockton (Massachusetts) | 2,264.14 mi (3,643.79 km) |
| Boise to Broken Arrow (Oklahoma) | 1,200.16 mi (1,931.46 km) |
| Boise to Bronx (New York) | 2,152.32 mi (3,463.82 km) |
| Boise to Brook Park (Ohio) | 1,746.76 mi (2,811.13 km) |
