| Fort Collins to Castrovillari | 5,768.70 mi (9,283.83 km) |
| Fort Collins to Catania | 5,850.08 mi (9,414.80 km) |
| Fort Collins to Catanzaro | 5,830.67 mi (9,383.55 km) |
| Fort Collins to Cattolica | 5,436.41 mi (8,749.06 km) |
| Fort Collins to Cava de' Tirreni | 5,670.66 mi (9,126.04 km) |
| Fort Collins to Cavallino | 5,810.69 mi (9,351.40 km) |
| Fort Collins to Cavarzere | 5,355.70 mi (8,619.17 km) |
| Fort Collins to Cave | 5,551.83 mi (8,934.81 km) |
| Fort Collins to Cavriago | 5,324.46 mi (8,568.89 km) |
| Fort Collins to Cavriglia | 5,415.89 mi (8,716.03 km) |
| Fort Collins to Cazzago San Martino | 5,263.85 mi (8,471.35 km) |
| Fort Collins to Ceccano | 5,578.53 mi (8,977.77 km) |
| Fort Collins to Cecina | 5,391.97 mi (8,677.53 km) |
| Fort Collins to Cefalu | 5,783.59 mi (9,307.80 km) |
| Fort Collins to Ceglie Messapico | 5,769.42 mi (9,284.99 km) |
