| Key West to Crawfordsville (Indiana) | 1,109.93 mi (1,786.26 km) |
| Key West to Crest Hill (Illinois) | 1,230.13 mi (1,979.70 km) |
| Key West to Crestview (Florida) | 518.36 mi (834.22 km) |
| Key West to Crestwood (Illinois) | 1,228.78 mi (1,977.53 km) |
| Key West to Crestwood (Missouri) | 1,090.07 mi (1,754.29 km) |
| Key West to Creve Coeur (Missouri) | 1,098.10 mi (1,767.23 km) |
| Key West to Crofton (Maryland) | 1,041.83 mi (1,676.66 km) |
| Key West to Crossville (Tennessee) | 810.29 mi (1,304.03 km) |
| Key West to Crowley (Louisiana) | 757.88 mi (1,219.69 km) |
| Key West to Crowley (Texas) | 1,093.82 mi (1,760.33 km) |
| Key West to Crown Point (Indiana) | 1,207.41 mi (1,943.13 km) |
| Key West to Crystal (Minnesota) | 1,555.97 mi (2,504.09 km) |
| Key West to Crystal Lake (Illinois) | 1,277.03 mi (2,055.18 km) |
| Key West to Cudahy (California) | 2,275.08 mi (3,661.39 km) |
| Key West to Cudahy (Wisconsin) | 1,316.41 mi (2,118.55 km) |
