| National City to Salisbury (New York) | 2,449.31 mi (3,941.79 km) |
| National City to Salisbury (North Carolina) | 2,091.03 mi (3,365.19 km) |
| National City to Salmon Creek (Washington) | 948.66 mi (1,526.72 km) |
| National City to Salt Lake City (Utah) | 629.02 mi (1,012.31 km) |
| National City to Sammamish (Washington) | 1,063.94 mi (1,712.25 km) |
| National City to San Angelo (Texas) | 977.55 mi (1,573.21 km) |
| National City to San Anselmo (California) | 479.47 mi (771.63 km) |
| National City to San Antonio (Texas) | 1,119.81 mi (1,802.16 km) |
| National City to San Benito (Texas) | 1,252.69 mi (2,016.01 km) |
| National City to San Bernardino (California) | 102.62 mi (165.15 km) |
| National City to San Bruno (California) | 456.15 mi (734.10 km) |
| National City to San Buenaventura (California) | 165.73 mi (266.72 km) |
| National City to San Carlos (California) | 443.60 mi (713.91 km) |
| National City to San Carlos Park (Florida) | 2,152.51 mi (3,464.13 km) |
| National City to San Clemente (California) | 61.78 mi (99.42 km) |
