| Fort Collins to Coudekerque-Branche | 4,751.98 mi (7,647.58 km) |
| Fort Collins to Coueron | 4,769.03 mi (7,675.01 km) |
| Fort Collins to Coulommiers | 4,872.83 mi (7,842.07 km) |
| Fort Collins to Courbevoic | 4,840.18 mi (7,789.51 km) |
| Fort Collins to Courcouronnes | 4,858.42 mi (7,818.88 km) |
| Fort Collins to Cournon-d'Auvergne | 5,014.65 mi (8,070.29 km) |
| Fort Collins to Courrieres | 4,795.58 mi (7,717.74 km) |
| Fort Collins to Coutras | 4,922.18 mi (7,921.48 km) |
| Fort Collins to Couzeix | 4,936.71 mi (7,944.87 km) |
| Fort Collins to Cran-Gevrier | 5,111.75 mi (8,226.57 km) |
| Fort Collins to Craponne | 5,069.79 mi (8,159.03 km) |
| Fort Collins to Creil | 4,832.37 mi (7,776.94 km) |
| Fort Collins to Crepy-en-Valois | 4,847.46 mi (7,801.23 km) |
| Fort Collins to Crest | 5,127.56 mi (8,252.02 km) |
| Fort Collins to Creteil | 4,852.22 mi (7,808.90 km) |
