| Idanha-a-Nova to Cortona | 1,017.46 mi (1,637.45 km) |
| Idanha-a-Nova to Cosenza | 1,247.16 mi (2,007.11 km) |
| Idanha-a-Nova to Cossato | 871.55 mi (1,402.62 km) |
| Idanha-a-Nova to Costa Volpino | 965.42 mi (1,553.69 km) |
| Idanha-a-Nova to Creazzo | 1,023.14 mi (1,646.59 km) |
| Idanha-a-Nova to Crema | 936.26 mi (1,506.77 km) |
| Idanha-a-Nova to Cremona | 947.83 mi (1,525.39 km) |
| Idanha-a-Nova to Crevalcore | 993.40 mi (1,598.73 km) |
| Idanha-a-Nova to Crispiano | 1,286.78 mi (2,070.87 km) |
| Idanha-a-Nova to Crosia | 1,271.45 mi (2,046.21 km) |
| Idanha-a-Nova to Crotone | 1,295.45 mi (2,084.83 km) |
| Idanha-a-Nova to Cuneo | 816.25 mi (1,313.63 km) |
| Idanha-a-Nova to Cuorgne | 843.78 mi (1,357.93 km) |
| Idanha-a-Nova to Cusano Milanino | 917.30 mi (1,476.26 km) |
| Idanha-a-Nova to Cutro | 1,289.00 mi (2,074.44 km) |
