| National City to Ukiah (California) | 563.18 mi (906.35 km) |
| National City to Union (Missouri) | 1,515.02 mi (2,438.20 km) |
| National City to Union City (California) | 439.93 mi (708.00 km) |
| National City to Union City (Georgia) | 1,875.87 mi (3,018.91 km) |
| National City to Union City (New Jersey) | 2,424.59 mi (3,902.01 km) |
| National City to Union City (Tennessee) | 1,611.57 mi (2,593.57 km) |
| National City to Union Hill-Novelty Hill (Washington) | 1,068.90 mi (1,720.23 km) |
| National City to Union Park (Florida) | 2,141.06 mi (3,445.71 km) |
| National City to Uniondale (New York) | 2,447.55 mi (3,938.95 km) |
| National City to Universal City (Texas) | 1,130.64 mi (1,819.58 km) |
| National City to University (Florida) | 2,081.30 mi (3,349.53 km) |
| National City to University City (Missouri) | 1,552.44 mi (2,498.40 km) |
| National City to University Heights (Ohio) | 2,036.81 mi (3,277.92 km) |
| National City to University of California-Santa Barbara (California) | 199.61 mi (321.25 km) |
| National City to University Park (Texas) | 1,178.04 mi (1,895.88 km) |
