| Key West to Clemson (South Carolina) | 701.93 mi (1,129.65 km) |
| Key West to Clermont (Florida) | 274.21 mi (441.29 km) |
| Key West to Cleveland (Mississippi) | 832.26 mi (1,339.39 km) |
| Key West to Cleveland (Ohio) | 1,168.53 mi (1,880.57 km) |
| Key West to Cleveland (Tennessee) | 756.51 mi (1,217.49 km) |
| Key West to Cleveland Heights (Ohio) | 1,171.00 mi (1,884.54 km) |
| Key West to Cliffside Park (New Jersey) | 1,209.88 mi (1,947.12 km) |
| Key West to Clifton (Colorado) | 1,848.91 mi (2,975.53 km) |
| Key West to Clifton (New Jersey) | 1,208.87 mi (1,945.48 km) |
| Key West to Clinton (Iowa) | 1,288.60 mi (2,073.80 km) |
| Key West to Clinton (Maryland) | 1,020.70 mi (1,642.66 km) |
| Key West to Clinton (Mississippi) | 747.88 mi (1,203.60 km) |
| Key West to Clinton (Utah) | 2,081.30 mi (3,349.52 km) |
| Key West to Clive (Iowa) | 1,365.05 mi (2,196.83 km) |
| Key West to Cloquet (Minnesota) | 1,641.30 mi (2,641.42 km) |
