| National City to San Diego (California) | 11.55 mi (18.58 km) |
| National City to San Diego Country Estates (California) | 29.84 mi (48.03 km) |
| National City to San Dimas (California) | 107.79 mi (173.47 km) |
| National City to San Fernando (California) | 136.10 mi (219.03 km) |
| National City to San Francisco (California) | 463.28 mi (745.58 km) |
| National City to San Gabriel (California) | 114.40 mi (184.12 km) |
| National City to San Germán (Puerto Rico) | 3,250.82 mi (5,231.69 km) |
| National City to San Jacinto (California) | 78.43 mi (126.22 km) |
| National City to San Jose (California) | 418.06 mi (672.81 km) |
| National City to San Juan (Puerto Rico) | 3,297.67 mi (5,307.09 km) |
| National City to San Juan (Texas) | 1,222.51 mi (1,967.44 km) |
| National City to San Juan Capistrano (California) | 66.09 mi (106.36 km) |
| National City to San Leandro (California) | 450.45 mi (724.93 km) |
| National City to San Lorenzo (California) | 447.71 mi (720.53 km) |
| National City to San Luis (Arizona) | 139.63 mi (224.72 km) |
