| National City to Hutchinson (Kansas) | 1,141.28 mi (1,836.71 km) |
| National City to Hutchinson (Minnesota) | 1,478.63 mi (2,379.63 km) |
| National City to Hutto (Texas) | 1,158.38 mi (1,864.22 km) |
| National City to Hyattsville (Maryland) | 2,272.08 mi (3,656.56 km) |
| National City to Hybla Valley (Virginia) | 2,265.68 mi (3,646.25 km) |
| National City to Idaho Falls (Idaho) | 796.37 mi (1,281.64 km) |
| National City to Idylwood (Virginia) | 2,258.74 mi (3,635.09 km) |
| National City to Ilchester (Maryland) | 2,281.63 mi (3,671.93 km) |
| National City to Immokalee (Florida) | 2,176.63 mi (3,502.95 km) |
| National City to Imperial (California) | 89.50 mi (144.03 km) |
| National City to Imperial Beach (California) | 6.74 mi (10.84 km) |
| National City to Independence (Kentucky) | 1,864.20 mi (3,000.14 km) |
| National City to Independence (Missouri) | 1,344.28 mi (2,163.40 km) |
| National City to Indian Trail (North Carolina) | 2,086.33 mi (3,357.62 km) |
| National City to Indiana (Pennsylvania) | 2,156.14 mi (3,469.97 km) |
