| National City to Carlsbad (California) | 33.50 mi (53.91 km) |
| National City to Carlsbad (New Mexico) | 748.85 mi (1,205.15 km) |
| National City to Carmel (Indiana) | 1,785.38 mi (2,873.29 km) |
| National City to Carmichael (California) | 475.56 mi (765.33 km) |
| National City to Carney (Maryland) | 2,294.44 mi (3,692.54 km) |
| National City to Carnot-Moon (Pennsylvania) | 2,100.09 mi (3,379.76 km) |
| National City to Carol Stream (Illinois) | 1,705.54 mi (2,744.80 km) |
| National City to Carolina (Puerto Rico) | 3,302.20 mi (5,314.37 km) |
| National City to Carolina Forest (South Carolina) | 2,195.90 mi (3,533.96 km) |
| National City to Carpentersville (Illinois) | 1,700.72 mi (2,737.04 km) |
| National City to Carpinteria (California) | 183.36 mi (295.08 km) |
| National City to Carrboro (North Carolina) | 2,167.70 mi (3,488.58 km) |
| National City to Carroll (Iowa) | 1,377.20 mi (2,216.38 km) |
| National City to Carrollton (Georgia) | 1,846.22 mi (2,971.20 km) |
| National City to Carrollton (Texas) | 1,171.12 mi (1,884.74 km) |
