| National City to Isabela (Puerto Rico) | 3,238.72 mi (5,212.21 km) |
| National City to Iselin (New Jersey) | 2,409.85 mi (3,878.27 km) |
| National City to Isla Vista (California) | 199.73 mi (321.43 km) |
| National City to Issaquah (Washington) | 1,060.17 mi (1,706.18 km) |
| National City to Ithaca (New York) | 2,299.71 mi (3,701.02 km) |
| National City to Ives Estates (Florida) | 2,259.93 mi (3,637.01 km) |
| National City to Jackson (Michigan) | 1,897.41 mi (3,053.58 km) |
| National City to Jackson (Mississippi) | 1,562.84 mi (2,515.15 km) |
| National City to Jackson (Missouri) | 1,580.83 mi (2,544.10 km) |
| National City to Jackson (Tennessee) | 1,623.38 mi (2,612.57 km) |
| National City to Jackson (Wyoming) | 821.45 mi (1,322.00 km) |
| National City to Jacksonville (Alabama) | 1,806.10 mi (2,906.64 km) |
| National City to Jacksonville (Arkansas) | 1,438.40 mi (2,314.88 km) |
| National City to Jacksonville (Florida) | 2,083.50 mi (3,353.07 km) |
| National City to Jacksonville (Illinois) | 1,568.54 mi (2,524.32 km) |
