| Boise to Caño Martin Peña (Puerto Rico) | 3,375.46 mi (5,432.28 km) |
| Boise to Cañon City (Colorado) | 674.72 mi (1,085.86 km) |
| Boise to Canóvanas (Puerto Rico) | 3,385.59 mi (5,448.57 km) |
| Boise to Canton (Georgia) | 1,811.02 mi (2,914.56 km) |
| Boise to Canton (Illinois) | 1,353.54 mi (2,178.31 km) |
| Boise to Canton (Mississippi) | 1,604.93 mi (2,582.89 km) |
| Boise to Canton (Ohio) | 1,781.56 mi (2,867.14 km) |
| Boise to Canyon (Texas) | 966.91 mi (1,556.10 km) |
| Boise to Canyon Lake (California) | 687.09 mi (1,105.77 km) |
| Boise to Canyon Lake (Texas) | 1,368.78 mi (2,202.84 km) |
| Boise to Cape Coral (Florida) | 2,238.24 mi (3,602.09 km) |
| Boise to Cape Girardeau (Missouri) | 1,460.69 mi (2,350.76 km) |
| Boise to Carbondale (Illinois) | 1,465.29 mi (2,358.15 km) |
| Boise to Carlisle (Pennsylvania) | 2,002.16 mi (3,222.17 km) |
| Boise to Carlsbad (California) | 726.04 mi (1,168.45 km) |
