| Colonia to Collegno | 3,977.12 mi (6,400.56 km) |
| Colonia to Cologno al Serio | 4,052.75 mi (6,522.27 km) |
| Colonia to Cologno Monzese | 4,036.45 mi (6,496.04 km) |
| Colonia to Colorno | 4,103.25 mi (6,603.55 km) |
| Colonia to Comacchio | 4,188.20 mi (6,740.26 km) |
| Colonia to Comiso | 4,577.95 mi (7,367.50 km) |
| Colonia to Como | 4,019.23 mi (6,468.32 km) |
| Colonia to Concordia Sagittaria | 4,180.19 mi (6,727.36 km) |
| Colonia to Concorezzo | 4,036.96 mi (6,496.86 km) |
| Colonia to Conegliano | 4,152.91 mi (6,683.47 km) |
| Colonia to Conselice | 4,179.46 mi (6,726.19 km) |
| Colonia to Conselve | 4,156.65 mi (6,689.49 km) |
| Colonia to Conversano | 4,536.14 mi (7,300.21 km) |
| Colonia to Copertino | 4,603.74 mi (7,409.01 km) |
| Colonia to Copparo | 4,166.47 mi (6,705.28 km) |
