| Boise to Caguas (Puerto Rico) | 3,385.32 mi (5,448.14 km) |
| Boise to Cahokia (Illinois) | 1,394.32 mi (2,243.95 km) |
| Boise to Calabasas (California) | 666.77 mi (1,073.06 km) |
| Boise to Caldwell (Idaho) | 21.66 mi (34.86 km) |
| Boise to Caledonia (Wisconsin) | 1,422.27 mi (2,288.92 km) |
| Boise to Calera (Alabama) | 1,741.57 mi (2,802.79 km) |
| Boise to Calexico (California) | 755.25 mi (1,215.45 km) |
| Boise to Calhoun (Georgia) | 1,780.40 mi (2,865.28 km) |
| Boise to California (Maryland) | 2,085.37 mi (3,356.07 km) |
| Boise to California City (California) | 589.85 mi (949.27 km) |
| Boise to Callaway (Florida) | 1,918.24 mi (3,087.11 km) |
| Boise to Calumet City (Illinois) | 1,457.66 mi (2,345.87 km) |
| Boise to Calverton (Maryland) | 2,042.75 mi (3,287.49 km) |
| Boise to Camano (Washington) | 436.12 mi (701.86 km) |
| Boise to Camarillo (California) | 665.08 mi (1,070.35 km) |
