| Idanha-a-Nova to Camas (Washington) | 5,299.64 mi (8,528.95 km) |
| Idanha-a-Nova to Cambridge (Maryland) | 3,589.31 mi (5,776.43 km) |
| Idanha-a-Nova to Cambridge (Massachusetts) | 3,248.02 mi (5,227.18 km) |
| Idanha-a-Nova to Camden (Arkansas) | 4,573.43 mi (7,360.23 km) |
| Idanha-a-Nova to Camden (New Jersey) | 3,502.87 mi (5,637.33 km) |
| Idanha-a-Nova to Cameron Park (California) | 5,583.17 mi (8,985.25 km) |
| Idanha-a-Nova to Camp Pendleton South (California) | 5,700.04 mi (9,173.32 km) |
| Idanha-a-Nova to Camp Springs (Maryland) | 3,623.15 mi (5,830.90 km) |
| Idanha-a-Nova to Camp Verde (Arizona) | 5,402.50 mi (8,694.48 km) |
| Idanha-a-Nova to Campbell (California) | 5,688.49 mi (9,154.73 km) |
| Idanha-a-Nova to Campbellsville (Kentucky) | 4,077.65 mi (6,562.34 km) |
| Idanha-a-Nova to Campton Hills (Illinois) | 4,070.32 mi (6,550.55 km) |
| Idanha-a-Nova to Canby (Oregon) | 5,324.76 mi (8,569.37 km) |
| Idanha-a-Nova to Candelaria (Puerto Rico) | 3,780.76 mi (6,084.54 km) |
| Idanha-a-Nova to Candler-McAfee (Georgia) | 4,148.57 mi (6,676.48 km) |
