| Key Largo to Coudekerque-Branche | 4,583.27 mi (7,376.06 km) |
| Key Largo to Coueron | 4,449.09 mi (7,160.12 km) |
| Key Largo to Coulommiers | 4,645.06 mi (7,475.50 km) |
| Key Largo to Courbevoic | 4,606.96 mi (7,414.19 km) |
| Key Largo to Courcouronnes | 4,618.81 mi (7,433.25 km) |
| Key Largo to Cournon-d'Auvergne | 4,699.22 mi (7,562.67 km) |
| Key Largo to Courrieres | 4,614.93 mi (7,427.02 km) |
| Key Largo to Coutras | 4,552.96 mi (7,327.28 km) |
| Key Largo to Couzeix | 4,605.30 mi (7,411.52 km) |
| Key Largo to Cran-Gevrier | 4,831.60 mi (7,775.71 km) |
| Key Largo to Craponne | 4,770.42 mi (7,677.24 km) |
| Key Largo to Creil | 4,611.94 mi (7,422.20 km) |
| Key Largo to Crepy-en-Valois | 4,630.11 mi (7,451.44 km) |
| Key Largo to Crest | 4,802.93 mi (7,729.58 km) |
| Key Largo to Creteil | 4,617.84 mi (7,431.69 km) |
