| Os to Castelfidardo | 1,206.22 mi (1,941.22 km) |
| Os to Castelfiorentino | 1,171.42 mi (1,885.22 km) |
| Os to Castelfranco di Sopra | 1,174.89 mi (1,890.80 km) |
| Os to Castelfranco di Sotto | 1,162.86 mi (1,871.45 km) |
| Os to Castelfranco Emilia | 1,104.27 mi (1,777.15 km) |
| Os to Castelfranco Veneto | 1,040.12 mi (1,673.91 km) |
| Os to Castellabate | 1,437.07 mi (2,312.74 km) |
| Os to Castellammare del Golfo | 1,567.73 mi (2,523.02 km) |
| Os to Castellammare di Stabia | 1,403.45 mi (2,258.64 km) |
| Os to Castellamonte | 1,029.78 mi (1,657.27 km) |
| Os to Castellana Grotte | 1,426.68 mi (2,296.02 km) |
| Os to Castellaneta | 1,439.82 mi (2,317.16 km) |
| Os to Castellanza | 1,019.15 mi (1,640.17 km) |
| Os to Castellarano | 1,104.04 mi (1,776.78 km) |
| Os to Castelleone | 1,046.54 mi (1,684.24 km) |
