| National City to Cadillac (Michigan) | 1,876.29 mi (3,019.59 km) |
| National City to Caguas (Puerto Rico) | 3,304.34 mi (5,317.82 km) |
| National City to Cahokia (Illinois) | 1,559.74 mi (2,510.15 km) |
| National City to Calabasas (California) | 136.20 mi (219.20 km) |
| National City to Caldwell (Idaho) | 759.01 mi (1,221.51 km) |
| National City to Caledonia (Wisconsin) | 1,732.18 mi (2,787.67 km) |
| National City to Calera (Alabama) | 1,755.04 mi (2,824.47 km) |
| National City to Calexico (California) | 93.29 mi (150.14 km) |
| National City to Calhoun (Georgia) | 1,847.77 mi (2,973.70 km) |
| National City to California (Maryland) | 2,298.67 mi (3,699.36 km) |
| National City to California City (California) | 177.83 mi (286.19 km) |
| National City to Callaway (Florida) | 1,861.54 mi (2,995.86 km) |
| National City to Calumet City (Illinois) | 1,730.46 mi (2,784.90 km) |
| National City to Calverton (Maryland) | 2,272.23 mi (3,656.80 km) |
| National City to Camano (Washington) | 1,108.29 mi (1,783.63 km) |
