| Key West to Coudekerque-Branche | 4,669.72 mi (7,515.19 km) |
| Key West to Coueron | 4,538.23 mi (7,303.57 km) |
| Key West to Coulommiers | 4,732.87 mi (7,616.82 km) |
| Key West to Courbevoic | 4,694.80 mi (7,555.56 km) |
| Key West to Courcouronnes | 4,706.80 mi (7,574.86 km) |
| Key West to Cournon-d'Auvergne | 4,788.76 mi (7,706.76 km) |
| Key West to Courrieres | 4,701.72 mi (7,566.68 km) |
| Key West to Coutras | 4,643.12 mi (7,472.38 km) |
| Key West to Couzeix | 4,694.94 mi (7,555.77 km) |
| Key West to Cran-Gevrier | 4,920.77 mi (7,919.21 km) |
| Key West to Craponne | 4,859.80 mi (7,821.10 km) |
| Key West to Creil | 4,699.54 mi (7,563.17 km) |
| Key West to Crepy-en-Valois | 4,717.68 mi (7,592.38 km) |
| Key West to Crest | 4,892.80 mi (7,874.21 km) |
| Key West to Creteil | 4,705.72 mi (7,573.13 km) |
