| Fort Collins to Castelfidardo | 5,489.49 mi (8,834.48 km) |
| Fort Collins to Castelfiorentino | 5,393.75 mi (8,680.41 km) |
| Fort Collins to Castelfranco di Sopra | 5,413.17 mi (8,711.66 km) |
| Fort Collins to Castelfranco di Sotto | 5,381.24 mi (8,660.27 km) |
| Fort Collins to Castelfranco Emilia | 5,347.45 mi (8,605.90 km) |
| Fort Collins to Castelfranco Veneto | 5,324.35 mi (8,568.71 km) |
| Fort Collins to Castellabate | 5,701.22 mi (9,175.23 km) |
| Fort Collins to Castellammare del Golfo | 5,742.39 mi (9,241.48 km) |
| Fort Collins to Castellammare di Stabia | 5,663.26 mi (9,114.13 km) |
| Fort Collins to Castellamonte | 5,193.13 mi (8,357.54 km) |
| Fort Collins to Castellana Grotte | 5,745.85 mi (9,247.05 km) |
| Fort Collins to Castellaneta | 5,751.09 mi (9,255.48 km) |
| Fort Collins to Castellanza | 5,223.36 mi (8,406.19 km) |
| Fort Collins to Castellarano | 5,339.65 mi (8,593.34 km) |
| Fort Collins to Castelleone | 5,268.67 mi (8,479.10 km) |
