| Idanha-a-Nova to Colchester | 913.85 mi (1,470.71 km) |
| Idanha-a-Nova to Coleford | 849.54 mi (1,367.21 km) |
| Idanha-a-Nova to Colne | 991.60 mi (1,595.83 km) |
| Idanha-a-Nova to Colwyn Bay | 938.81 mi (1,510.86 km) |
| Idanha-a-Nova to Congleton | 945.11 mi (1,521.01 km) |
| Idanha-a-Nova to Conisbrough | 978.47 mi (1,574.69 km) |
| Idanha-a-Nova to Connahs Quay | 939.78 mi (1,512.43 km) |
| Idanha-a-Nova to Consett | 1,061.51 mi (1,708.34 km) |
| Idanha-a-Nova to Conwy | 937.07 mi (1,508.06 km) |
| Idanha-a-Nova to Cookstown | 1,018.02 mi (1,638.34 km) |
| Idanha-a-Nova to Corby | 922.10 mi (1,483.97 km) |
| Idanha-a-Nova to Corfe Mullen | 791.01 mi (1,273.01 km) |
| Idanha-a-Nova to Corsham | 831.74 mi (1,338.56 km) |
| Idanha-a-Nova to Coseley | 906.33 mi (1,458.59 km) |
| Idanha-a-Nova to Cosham | 811.35 mi (1,305.75 km) |
