| Fort Collins to Cadiz | 5,037.35 mi (8,106.83 km) |
| Fort Collins to Calafell | 5,158.55 mi (8,301.89 km) |
| Fort Collins to Calahorra | 4,970.04 mi (7,998.51 km) |
| Fort Collins to Calasparra | 5,159.48 mi (8,303.39 km) |
| Fort Collins to Calatayud | 5,024.75 mi (8,086.55 km) |
| Fort Collins to Caldas de Montbuy | 5,162.28 mi (8,307.89 km) |
| Fort Collins to Caldas de Reyes | 4,686.25 mi (7,541.79 km) |
| Fort Collins to Calella | 5,182.27 mi (8,340.05 km) |
| Fort Collins to Callosa de Segura | 5,198.35 mi (8,365.94 km) |
| Fort Collins to Calpe | 5,212.91 mi (8,389.36 km) |
| Fort Collins to Calvia | 5,270.20 mi (8,481.57 km) |
| Fort Collins to Camas | 5,011.80 mi (8,065.71 km) |
| Fort Collins to Cambados | 4,683.65 mi (7,537.60 km) |
| Fort Collins to Cambre | 4,671.67 mi (7,518.32 km) |
| Fort Collins to Cambrils | 5,144.40 mi (8,279.11 km) |
