| Idanha-a-Nova to Cognac | 530.55 mi (853.83 km) |
| Idanha-a-Nova to Cogolin | 746.66 mi (1,201.63 km) |
| Idanha-a-Nova to Colmar | 916.12 mi (1,474.35 km) |
| Idanha-a-Nova to Colombes | 777.43 mi (1,251.14 km) |
| Idanha-a-Nova to Colomiers | 509.83 mi (820.49 km) |
| Idanha-a-Nova to Combs-la-Ville | 773.51 mi (1,244.84 km) |
| Idanha-a-Nova to Comines | 897.47 mi (1,444.33 km) |
| Idanha-a-Nova to Compiegne | 819.99 mi (1,319.64 km) |
| Idanha-a-Nova to Concarneau | 573.97 mi (923.71 km) |
| Idanha-a-Nova to Conde-sur-l'Escaut | 896.58 mi (1,442.91 km) |
| Idanha-a-Nova to Conflans-Sainte-Honorine | 776.94 mi (1,250.36 km) |
| Idanha-a-Nova to Corbas | 731.23 mi (1,176.80 km) |
| Idanha-a-Nova to Corbeil-Essonnes | 768.24 mi (1,236.37 km) |
| Idanha-a-Nova to Cormeilles-en-Parisis | 778.59 mi (1,253.02 km) |
| Idanha-a-Nova to Cosne sur Loire | 724.00 mi (1,165.17 km) |
