| Idanha-a-Nova to Castelfidardo | 1,096.67 mi (1,764.91 km) |
| Idanha-a-Nova to Castelfiorentino | 969.73 mi (1,560.62 km) |
| Idanha-a-Nova to Castelfranco di Sopra | 999.23 mi (1,608.10 km) |
| Idanha-a-Nova to Castelfranco di Sotto | 960.15 mi (1,545.21 km) |
| Idanha-a-Nova to Castelfranco Emilia | 986.89 mi (1,588.25 km) |
| Idanha-a-Nova to Castelfranco Veneto | 1,046.57 mi (1,684.29 km) |
| Idanha-a-Nova to Castellabate | 1,169.79 mi (1,882.60 km) |
| Idanha-a-Nova to Castellammare del Golfo | 1,085.99 mi (1,747.73 km) |
| Idanha-a-Nova to Castellammare di Stabia | 1,142.46 mi (1,838.61 km) |
| Idanha-a-Nova to Castellamonte | 846.40 mi (1,362.15 km) |
| Idanha-a-Nova to Castellana Grotte | 1,281.44 mi (2,062.28 km) |
| Idanha-a-Nova to Castellaneta | 1,270.89 mi (2,045.30 km) |
| Idanha-a-Nova to Castellanza | 905.95 mi (1,457.99 km) |
| Idanha-a-Nova to Castellarano | 973.50 mi (1,566.70 km) |
| Idanha-a-Nova to Castelleone | 938.38 mi (1,510.18 km) |
