| Idanha-a-Nova to Crest Hill (Illinois) | 4,068.60 mi (6,547.78 km) |
| Idanha-a-Nova to Crestview (Florida) | 4,370.88 mi (7,034.25 km) |
| Idanha-a-Nova to Crestwood (Illinois) | 4,049.21 mi (6,516.57 km) |
| Idanha-a-Nova to Crestwood (Missouri) | 4,274.52 mi (6,879.18 km) |
| Idanha-a-Nova to Creve Coeur (Missouri) | 4,273.88 mi (6,878.14 km) |
| Idanha-a-Nova to Crofton (Maryland) | 3,605.39 mi (5,802.31 km) |
| Idanha-a-Nova to Crossville (Tennessee) | 4,109.01 mi (6,612.82 km) |
| Idanha-a-Nova to Crowley (Louisiana) | 4,679.26 mi (7,530.54 km) |
| Idanha-a-Nova to Crowley (Texas) | 4,827.78 mi (7,769.57 km) |
| Idanha-a-Nova to Crown Point (Indiana) | 4,038.53 mi (6,499.39 km) |
| Idanha-a-Nova to Crystal (Minnesota) | 4,188.24 mi (6,740.33 km) |
| Idanha-a-Nova to Crystal Lake (Illinois) | 4,057.53 mi (6,529.96 km) |
| Idanha-a-Nova to Cudahy (California) | 5,698.19 mi (9,170.35 km) |
| Idanha-a-Nova to Cudahy (Wisconsin) | 4,013.66 mi (6,459.36 km) |
| Idanha-a-Nova to Cullman (Alabama) | 4,259.28 mi (6,854.65 km) |
