| Key Largo to Carmona | 4,384.19 mi (7,055.67 km) |
| Key Largo to Cartagena | 4,629.71 mi (7,450.80 km) |
| Key Largo to Cartama | 4,449.68 mi (7,161.07 km) |
| Key Largo to Cartaya | 4,305.40 mi (6,928.87 km) |
| Key Largo to Caspe | 4,616.75 mi (7,429.94 km) |
| Key Largo to Cassa de la Selva | 4,750.88 mi (7,645.80 km) |
| Key Largo to Castalla | 4,628.63 mi (7,449.06 km) |
| Key Largo to Castellbisbal | 4,713.85 mi (7,586.21 km) |
| Key Largo to Castelldefels | 4,717.07 mi (7,591.40 km) |
| Key Largo to Castello de Ampurias | 4,754.09 mi (7,650.97 km) |
| Key Largo to Castellon de la Plana | 4,637.77 mi (7,463.77 km) |
| Key Largo to Castilleja de la Cuesta | 4,363.08 mi (7,021.70 km) |
| Key Largo to Catarroja | 4,628.58 mi (7,448.98 km) |
| Key Largo to Catral | 4,629.22 mi (7,450.00 km) |
| Key Largo to Caudete | 4,610.20 mi (7,419.39 km) |
