| National City to Shoreview (Minnesota) | 1,539.09 mi (2,476.92 km) |
| National City to Shorewood (Illinois) | 1,695.49 mi (2,728.62 km) |
| National City to Shorewood (Wisconsin) | 1,736.71 mi (2,794.96 km) |
| National City to Short Hills (New Jersey) | 2,409.15 mi (3,877.15 km) |
| National City to Short Pump (Virginia) | 2,239.84 mi (3,604.68 km) |
| National City to Show Low (Arizona) | 421.60 mi (678.49 km) |
| National City to Shreveport (Louisiana) | 1,354.26 mi (2,179.47 km) |
| National City to Sicklerville (New Jersey) | 2,375.34 mi (3,822.74 km) |
| National City to Sidney (Ohio) | 1,891.73 mi (3,044.45 km) |
| National City to Sierra Madre (California) | 117.49 mi (189.08 km) |
| National City to Sierra Vista (Arizona) | 404.11 mi (650.36 km) |
| National City to Sierra Vista Southeast (Arizona) | 411.54 mi (662.31 km) |
| National City to Signal Hill (California) | 100.00 mi (160.94 km) |
| National City to Sikeston (Missouri) | 1,582.58 mi (2,546.91 km) |
| National City to Siloam Springs (Arkansas) | 1,305.81 mi (2,101.50 km) |
