| Key Largo to Collegno | 4,915.96 mi (7,911.48 km) |
| Key Largo to Cologno al Serio | 5,003.86 mi (8,052.94 km) |
| Key Largo to Cologno Monzese | 4,985.65 mi (8,023.63 km) |
| Key Largo to Colorno | 5,049.66 mi (8,126.64 km) |
| Key Largo to Comacchio | 5,138.21 mi (8,269.15 km) |
| Key Largo to Comiso | 5,453.60 mi (8,776.71 km) |
| Key Largo to Como | 4,970.84 mi (7,999.80 km) |
| Key Largo to Concordia Sagittaria | 5,143.27 mi (8,277.29 km) |
| Key Largo to Concorezzo | 4,986.99 mi (8,025.79 km) |
| Key Largo to Conegliano | 5,115.43 mi (8,232.49 km) |
| Key Largo to Conselice | 5,126.36 mi (8,250.08 km) |
| Key Largo to Conselve | 5,111.11 mi (8,225.54 km) |
| Key Largo to Conversano | 5,466.59 mi (8,797.63 km) |
| Key Largo to Copertino | 5,531.09 mi (8,901.43 km) |
| Key Largo to Copparo | 5,117.36 mi (8,235.60 km) |
