| Colonia to Castelfidardo | 4,289.61 mi (6,903.45 km) |
| Colonia to Castelfiorentino | 4,173.18 mi (6,716.08 km) |
| Colonia to Castelfranco di Sopra | 4,198.10 mi (6,756.18 km) |
| Colonia to Castelfranco di Sotto | 4,160.35 mi (6,695.43 km) |
| Colonia to Castelfranco Emilia | 4,143.24 mi (6,667.89 km) |
| Colonia to Castelfranco Veneto | 4,144.94 mi (6,670.63 km) |
| Colonia to Castellabate | 4,467.20 mi (7,189.27 km) |
| Colonia to Castellammare del Golfo | 4,458.32 mi (7,174.97 km) |
| Colonia to Castellammare di Stabia | 4,430.80 mi (7,130.68 km) |
| Colonia to Castellamonte | 3,973.64 mi (6,394.95 km) |
| Colonia to Castellana Grotte | 4,541.50 mi (7,308.84 km) |
| Colonia to Castellaneta | 4,540.89 mi (7,307.86 km) |
| Colonia to Castellanza | 4,017.41 mi (6,465.40 km) |
| Colonia to Castellarano | 4,132.64 mi (6,650.84 km) |
| Colonia to Castelleone | 4,064.66 mi (6,541.44 km) |
