| Boise to Clarkston (Georgia) | 1,838.66 mi (2,959.04 km) |
| Boise to Clarksville (Indiana) | 1,621.02 mi (2,608.77 km) |
| Boise to Clarksville (Tennessee) | 1,593.24 mi (2,564.07 km) |
| Boise to Clawson (Michigan) | 1,660.29 mi (2,671.98 km) |
| Boise to Clay (Alabama) | 1,726.94 mi (2,779.24 km) |
| Boise to Clayton (California) | 491.54 mi (791.06 km) |
| Boise to Clayton (Missouri) | 1,384.68 mi (2,228.43 km) |
| Boise to Clayton (North Carolina) | 2,064.60 mi (3,322.65 km) |
| Boise to Clayton (Ohio) | 1,654.50 mi (2,662.66 km) |
| Boise to Clearfield (Utah) | 275.48 mi (443.34 km) |
| Boise to Clearlake (California) | 461.63 mi (742.93 km) |
| Boise to Clearwater (Florida) | 2,143.01 mi (3,448.85 km) |
| Boise to Cleburne (Texas) | 1,280.81 mi (2,061.26 km) |
| Boise to Clemmons (North Carolina) | 1,956.20 mi (3,148.20 km) |
| Boise to Clemson (South Carolina) | 1,878.93 mi (3,023.85 km) |
