| Idanha-a-Nova to Clarkston (Georgia) | 4,144.02 mi (6,669.16 km) |
| Idanha-a-Nova to Clarksville (Indiana) | 4,065.11 mi (6,542.16 km) |
| Idanha-a-Nova to Clarksville (Tennessee) | 4,199.66 mi (6,758.71 km) |
| Idanha-a-Nova to Clawson (Michigan) | 3,811.00 mi (6,133.22 km) |
| Idanha-a-Nova to Clay (Alabama) | 4,265.10 mi (6,864.02 km) |
| Idanha-a-Nova to Clayton (California) | 5,655.15 mi (9,101.08 km) |
| Idanha-a-Nova to Clayton (Missouri) | 4,269.24 mi (6,870.67 km) |
| Idanha-a-Nova to Clayton (North Carolina) | 3,794.57 mi (6,106.77 km) |
| Idanha-a-Nova to Clayton (Ohio) | 3,947.02 mi (6,352.11 km) |
| Idanha-a-Nova to Clearfield (Utah) | 5,118.39 mi (8,237.25 km) |
| Idanha-a-Nova to Clearlake (California) | 5,631.76 mi (9,063.44 km) |
| Idanha-a-Nova to Clearwater (Florida) | 4,280.08 mi (6,888.12 km) |
| Idanha-a-Nova to Cleburne (Texas) | 4,839.31 mi (7,788.11 km) |
| Idanha-a-Nova to Clemmons (North Carolina) | 3,878.66 mi (6,242.10 km) |
| Idanha-a-Nova to Clemson (South Carolina) | 4,043.30 mi (6,507.06 km) |
