| Fort Collins to Carmona | 5,026.27 mi (8,089.01 km) |
| Fort Collins to Cartagena | 5,217.50 mi (8,396.76 km) |
| Fort Collins to Cartama | 5,102.02 mi (8,210.91 km) |
| Fort Collins to Cartaya | 4,968.42 mi (7,995.89 km) |
| Fort Collins to Caspe | 5,093.80 mi (8,197.67 km) |
| Fort Collins to Cassa de la Selva | 5,177.90 mi (8,333.03 km) |
| Fort Collins to Castalla | 5,185.75 mi (8,345.66 km) |
| Fort Collins to Castellbisbal | 5,162.17 mi (8,307.71 km) |
| Fort Collins to Castelldefels | 5,170.90 mi (8,321.75 km) |
| Fort Collins to Castello de Ampurias | 5,168.69 mi (8,318.21 km) |
| Fort Collins to Castellon de la Plana | 5,149.64 mi (8,287.55 km) |
| Fort Collins to Castilleja de la Cuesta | 5,011.87 mi (8,065.82 km) |
| Fort Collins to Catarroja | 5,160.58 mi (8,305.15 km) |
| Fort Collins to Catral | 5,199.79 mi (8,368.25 km) |
| Fort Collins to Caudete | 5,167.88 mi (8,316.89 km) |
