| National City to Carrollwood (Florida) | 2,076.97 mi (3,342.57 km) |
| National City to Carson (California) | 105.03 mi (169.03 km) |
| National City to Carson City (Nevada) | 471.94 mi (759.52 km) |
| National City to Carteret (New Jersey) | 2,414.49 mi (3,885.75 km) |
| National City to Cartersville (Georgia) | 1,857.80 mi (2,989.84 km) |
| National City to Carthage (Missouri) | 1,323.67 mi (2,130.24 km) |
| National City to Cary (Illinois) | 1,704.14 mi (2,742.55 km) |
| National City to Cary (North Carolina) | 2,183.60 mi (3,514.17 km) |
| National City to Casa de Oro-Mount Helix (California) | 10.15 mi (16.34 km) |
| National City to Casa Grande (Arizona) | 310.36 mi (499.48 km) |
| National City to Casas Adobes (Arizona) | 355.34 mi (571.87 km) |
| National City to Cascades (Virginia) | 2,248.72 mi (3,618.96 km) |
| National City to Casper (Wyoming) | 915.48 mi (1,473.32 km) |
| National City to Casselberry (Florida) | 2,134.14 mi (3,434.57 km) |
| National City to Castaic (California) | 153.43 mi (246.92 km) |
