| Fort Collins to Cocentaina | 5,188.56 mi (8,350.18 km) |
| Fort Collins to Coin | 5,098.81 mi (8,205.74 km) |
| Fort Collins to Colindres | 4,864.17 mi (7,828.13 km) |
| Fort Collins to Collado-Villalba | 4,959.19 mi (7,981.04 km) |
| Fort Collins to Colmenar Viejo | 4,968.07 mi (7,995.33 km) |
| Fort Collins to Colmenarejo | 4,961.94 mi (7,985.47 km) |
| Fort Collins to Conil de la Frontera | 5,058.18 mi (8,140.36 km) |
| Fort Collins to Consuegra | 5,026.22 mi (8,088.92 km) |
| Fort Collins to Corbera de Llobregat | 5,162.90 mi (8,308.89 km) |
| Fort Collins to Cordoba | 5,044.90 mi (8,118.98 km) |
| Fort Collins to Coria del Rio | 5,016.14 mi (8,072.69 km) |
| Fort Collins to Crevillente | 5,195.64 mi (8,361.57 km) |
| Fort Collins to Cuarte de Huerva | 5,043.16 mi (8,116.18 km) |
| Fort Collins to Cubellas | 5,162.21 mi (8,307.78 km) |
| Fort Collins to Cuellar | 4,913.94 mi (7,908.23 km) |
