| National City to Southern Pines (North Carolina) | 2,155.15 mi (3,468.38 km) |
| National City to Southfield (Michigan) | 1,957.61 mi (3,150.47 km) |
| National City to Southgate (Michigan) | 1,957.54 mi (3,150.35 km) |
| National City to Southlake (Texas) | 1,156.84 mi (1,861.75 km) |
| National City to Spanaway (Washington) | 1,035.74 mi (1,666.87 km) |
| National City to Spanish Fork (Utah) | 596.97 mi (960.73 km) |
| National City to Spanish Lake (Missouri) | 1,560.14 mi (2,510.80 km) |
| National City to Spanish Springs (Nevada) | 503.83 mi (810.84 km) |
| National City to Sparks (Nevada) | 499.10 mi (803.23 km) |
| National City to Spartanburg (South Carolina) | 2,015.16 mi (3,243.08 km) |
| National City to Spearfish (South Dakota) | 1,084.49 mi (1,745.31 km) |
| National City to Speedway (Indiana) | 1,778.67 mi (2,862.49 km) |
| National City to Spencer (Iowa) | 1,392.04 mi (2,240.27 km) |
| National City to Spokane (Washington) | 1,036.66 mi (1,668.35 km) |
| National City to Spokane Valley (Washington) | 1,036.23 mi (1,667.65 km) |
