| Idanha-a-Nova to Cividale del Friuli | 1,124.04 mi (1,808.97 km) |
| Idanha-a-Nova to Civita Castellana | 1,033.39 mi (1,663.09 km) |
| Idanha-a-Nova to Civitanova Marche | 1,104.96 mi (1,778.25 km) |
| Idanha-a-Nova to Civitavecchia | 1,001.63 mi (1,611.96 km) |
| Idanha-a-Nova to Civitella in Val di Chiana | 1,005.12 mi (1,617.59 km) |
| Idanha-a-Nova to Clusone | 959.82 mi (1,544.69 km) |
| Idanha-a-Nova to Coccaglio | 954.04 mi (1,535.38 km) |
| Idanha-a-Nova to Codigoro | 1,041.43 mi (1,676.02 km) |
| Idanha-a-Nova to Codogno | 933.02 mi (1,501.56 km) |
| Idanha-a-Nova to Codroipo | 1,100.54 mi (1,771.16 km) |
| Idanha-a-Nova to Cogoleto | 868.34 mi (1,397.46 km) |
| Idanha-a-Nova to Colle di Val d'Elsa | 975.95 mi (1,570.64 km) |
| Idanha-a-Nova to Colle Salvetti | 945.85 mi (1,522.20 km) |
| Idanha-a-Nova to Collecchio | 949.46 mi (1,528.01 km) |
| Idanha-a-Nova to Colleferro | 1,063.66 mi (1,711.79 km) |
