| Boise to Kenosha (Wisconsin) | 1,425.33 mi (2,293.85 km) |
| Boise to Kent (Ohio) | 1,774.77 mi (2,856.22 km) |
| Boise to Kent (Washington) | 390.24 mi (628.02 km) |
| Boise to Kentwood (Michigan) | 1,534.08 mi (2,468.87 km) |
| Boise to Kerman (California) | 516.20 mi (830.74 km) |
| Boise to Kernersville (North Carolina) | 1,968.98 mi (3,168.77 km) |
| Boise to Kerrville (Texas) | 1,326.15 mi (2,134.24 km) |
| Boise to Kettering (Maryland) | 2,055.07 mi (3,307.31 km) |
| Boise to Kettering (Ohio) | 1,667.52 mi (2,683.61 km) |
| Boise to Kewanee (Illinois) | 1,345.85 mi (2,165.93 km) |
| Boise to Key Biscayne (Florida) | 2,367.27 mi (3,809.76 km) |
| Boise to Key Largo (Florida) | 2,381.52 mi (3,832.69 km) |
| Boise to Key West (Florida) | 2,343.90 mi (3,772.15 km) |
| Boise to Keystone (Florida) | 2,144.08 mi (3,450.56 km) |
| Boise to Kihei (Hawaii) | 2,791.15 mi (4,491.92 km) |
