| Idanha-a-Nova to Commerce City (Colorado) | 4,873.07 mi (7,842.44 km) |
| Idanha-a-Nova to Compton (California) | 5,703.38 mi (9,178.70 km) |
| Idanha-a-Nova to Comstock Park (Michigan) | 3,911.71 mi (6,295.30 km) |
| Idanha-a-Nova to Concord (California) | 5,656.33 mi (9,102.98 km) |
| Idanha-a-Nova to Concord (Missouri) | 4,275.12 mi (6,880.14 km) |
| Idanha-a-Nova to Concord (New Hampshire) | 3,249.47 mi (5,229.52 km) |
| Idanha-a-Nova to Concord (North Carolina) | 3,911.85 mi (6,295.52 km) |
| Idanha-a-Nova to Conneaut (Ohio) | 3,708.42 mi (5,968.12 km) |
| Idanha-a-Nova to Connersville (Indiana) | 3,992.00 mi (6,424.51 km) |
| Idanha-a-Nova to Conroe (Texas) | 4,827.34 mi (7,768.86 km) |
| Idanha-a-Nova to Converse (Texas) | 4,997.50 mi (8,042.69 km) |
| Idanha-a-Nova to Conway (Arkansas) | 4,498.69 mi (7,239.95 km) |
| Idanha-a-Nova to Conway (Florida) | 4,187.38 mi (6,738.94 km) |
| Idanha-a-Nova to Conway (South Carolina) | 3,883.49 mi (6,249.87 km) |
| Idanha-a-Nova to Conyers (Georgia) | 4,137.07 mi (6,657.96 km) |
