| Key West to Carlsbad (California) | 2,217.11 mi (3,568.09 km) |
| Key West to Carlsbad (New Mexico) | 1,463.88 mi (2,355.89 km) |
| Key West to Carmel (Indiana) | 1,093.87 mi (1,760.42 km) |
| Key West to Carmichael (California) | 2,498.43 mi (4,020.84 km) |
| Key West to Carney (Maryland) | 1,070.08 mi (1,722.13 km) |
| Key West to Carnot-Moon (Pennsylvania) | 1,106.03 mi (1,779.99 km) |
| Key West to Carol Stream (Illinois) | 1,253.02 mi (2,016.55 km) |
| Key West to Carolina (Puerto Rico) | 1,100.18 mi (1,770.57 km) |
| Key West to Carolina Forest (South Carolina) | 658.70 mi (1,060.07 km) |
| Key West to Carpentersville (Illinois) | 1,269.05 mi (2,042.33 km) |
| Key West to Carpinteria (California) | 2,353.99 mi (3,788.37 km) |
| Key West to Carrboro (North Carolina) | 801.16 mi (1,289.34 km) |
| Key West to Carroll (Iowa) | 1,422.29 mi (2,288.95 km) |
| Key West to Carrollton (Georgia) | 654.14 mi (1,052.74 km) |
| Key West to Carrollton (Texas) | 1,083.30 mi (1,743.41 km) |
