| Fort Collins to Collegno | 5,202.70 mi (8,372.93 km) |
| Fort Collins to Cologno al Serio | 5,252.59 mi (8,453.23 km) |
| Fort Collins to Cologno Monzese | 5,240.71 mi (8,434.10 km) |
| Fort Collins to Colorno | 5,307.84 mi (8,542.14 km) |
| Fort Collins to Comacchio | 5,380.95 mi (8,659.80 km) |
| Fort Collins to Comiso | 5,860.74 mi (9,431.95 km) |
| Fort Collins to Como | 5,220.46 mi (8,401.52 km) |
| Fort Collins to Concordia Sagittaria | 5,349.93 mi (8,609.87 km) |
| Fort Collins to Concorezzo | 5,239.74 mi (8,432.54 km) |
| Fort Collins to Conegliano | 5,325.56 mi (8,570.66 km) |
| Fort Collins to Conselice | 5,378.17 mi (8,655.33 km) |
| Fort Collins to Conselve | 5,343.65 mi (8,599.77 km) |
| Fort Collins to Conversano | 5,739.77 mi (9,237.27 km) |
| Fort Collins to Copertino | 5,808.29 mi (9,347.54 km) |
| Fort Collins to Copparo | 5,359.10 mi (8,624.63 km) |
