| Key Largo to Cortona | 5,163.09 mi (8,309.19 km) |
| Key Largo to Cosenza | 5,471.22 mi (8,805.08 km) |
| Key Largo to Cossato | 4,933.59 mi (7,939.84 km) |
| Key Largo to Costa Volpino | 5,016.77 mi (8,073.72 km) |
| Key Largo to Creazzo | 5,086.64 mi (8,186.15 km) |
| Key Largo to Crema | 5,007.79 mi (8,059.25 km) |
| Key Largo to Cremona | 5,029.04 mi (8,093.46 km) |
| Key Largo to Crevalcore | 5,090.06 mi (8,191.66 km) |
| Key Largo to Crispiano | 5,482.47 mi (8,823.18 km) |
| Key Largo to Crosia | 5,488.99 mi (8,833.68 km) |
| Key Largo to Crotone | 5,519.71 mi (8,883.12 km) |
| Key Largo to Cuneo | 4,929.05 mi (7,932.54 km) |
| Key Largo to Cuorgne | 4,913.26 mi (7,907.12 km) |
| Key Largo to Cusano Milanino | 4,980.82 mi (8,015.85 km) |
| Key Largo to Cutro | 5,514.58 mi (8,874.85 km) |
