| Boise to Cicero (Illinois) | 1,443.17 mi (2,322.56 km) |
| Boise to Cimarron Hills (Colorado) | 682.00 mi (1,097.58 km) |
| Boise to Cincinnati (Ohio) | 1,663.03 mi (2,676.39 km) |
| Boise to Cinco Ranch (Texas) | 1,477.30 mi (2,377.49 km) |
| Boise to Circleville (Ohio) | 1,730.43 mi (2,784.85 km) |
| Boise to Citrus (California) | 661.32 mi (1,064.29 km) |
| Boise to Citrus Heights (California) | 428.91 mi (690.26 km) |
| Boise to Citrus Park (Florida) | 2,148.36 mi (3,457.46 km) |
| Boise to Claiborne (Louisiana) | 1,506.13 mi (2,423.87 km) |
| Boise to Claremont (California) | 659.45 mi (1,061.29 km) |
| Boise to Claremont (New Hampshire) | 2,174.13 mi (3,498.92 km) |
| Boise to Claremore (Oklahoma) | 1,198.26 mi (1,928.42 km) |
| Boise to Clarksburg (Maryland) | 2,022.71 mi (3,255.24 km) |
| Boise to Clarksburg (West Virginia) | 1,868.61 mi (3,007.24 km) |
| Boise to Clarksdale (Mississippi) | 1,517.00 mi (2,441.38 km) |
