| Boise to Cloverly (Maryland) | 2,038.98 mi (3,281.43 km) |
| Boise to Clovis (California) | 502.02 mi (807.93 km) |
| Boise to Clovis (New Mexico) | 941.68 mi (1,515.48 km) |
| Boise to Clute (Texas) | 1,528.11 mi (2,459.26 km) |
| Boise to Coachella (California) | 684.73 mi (1,101.97 km) |
| Boise to Coalinga (California) | 558.99 mi (899.61 km) |
| Boise to Coamo (Puerto Rico) | 3,376.88 mi (5,434.56 km) |
| Boise to Coatesville (Pennsylvania) | 2,075.95 mi (3,340.91 km) |
| Boise to Cockeysville (Maryland) | 2,048.03 mi (3,295.98 km) |
| Boise to Cocoa (Florida) | 2,220.75 mi (3,573.96 km) |
| Boise to Cocoa Beach (Florida) | 2,229.57 mi (3,588.15 km) |
| Boise to Coconut Creek (Florida) | 2,339.96 mi (3,765.80 km) |
| Boise to Coeur d'Alene (Idaho) | 284.82 mi (458.38 km) |
| Boise to Cohoes (New York) | 2,119.28 mi (3,410.66 km) |
| Boise to Cold Springs (Nevada) | 332.07 mi (534.41 km) |
