| National City to Camarillo (California) | 154.95 mi (249.37 km) |
| National City to Camas (Washington) | 937.74 mi (1,509.14 km) |
| National City to Cambridge (Maryland) | 2,320.32 mi (3,734.19 km) |
| National City to Cambridge (Massachusetts) | 2,574.14 mi (4,142.67 km) |
| National City to Camden (Arkansas) | 1,401.63 mi (2,255.70 km) |
| National City to Camden (New Jersey) | 2,368.97 mi (3,812.49 km) |
| National City to Cameron Park (California) | 468.91 mi (754.63 km) |
| National City to Camp Pendleton South (California) | 42.77 mi (68.83 km) |
| National City to Camp Springs (Maryland) | 2,274.28 mi (3,660.10 km) |
| National City to Camp Verde (Arizona) | 329.00 mi (529.47 km) |
| National City to Campbell (California) | 420.86 mi (677.31 km) |
| National City to Campbellsville (Kentucky) | 1,816.76 mi (2,923.79 km) |
| National City to Campton Hills (Illinois) | 1,691.68 mi (2,722.50 km) |
| National City to Canby (Oregon) | 920.27 mi (1,481.04 km) |
| National City to Candelaria (Puerto Rico) | 3,288.41 mi (5,292.19 km) |
