| West Whittier-Los Nietos to Siloam Springs (Arkansas) | 1,336.27 mi (2,150.52 km) |
| West Whittier-Los Nietos to Silver Firs (Washington) | 982.54 mi (1,581.24 km) |
| West Whittier-Los Nietos to Silver Spring (Maryland) | 2,286.96 mi (3,680.50 km) |
| West Whittier-Los Nietos to Silver Springs Shores (Florida) | 2,138.34 mi (3,441.32 km) |
| West Whittier-Los Nietos to Silverdale (Washington) | 975.73 mi (1,570.28 km) |
| West Whittier-Los Nietos to Silverton (Oregon) | 801.88 mi (1,290.50 km) |
| West Whittier-Los Nietos to Simi Valley (California) | 43.77 mi (70.44 km) |
| West Whittier-Los Nietos to Simpsonville (South Carolina) | 2,032.57 mi (3,271.10 km) |
| West Whittier-Los Nietos to Sioux City (Iowa) | 1,310.37 mi (2,108.83 km) |
| West Whittier-Los Nietos to Sioux Falls (South Dakota) | 1,320.34 mi (2,124.89 km) |
| West Whittier-Los Nietos to Skokie (Illinois) | 1,731.83 mi (2,787.11 km) |
| West Whittier-Los Nietos to Sleepy Hollow (New York) | 2,444.07 mi (3,933.35 km) |
| West Whittier-Los Nietos to Slidell (Louisiana) | 1,669.11 mi (2,686.17 km) |
| West Whittier-Los Nietos to Smithfield (North Carolina) | 2,242.26 mi (3,608.56 km) |
| West Whittier-Los Nietos to Smithfield (Utah) | 640.40 mi (1,030.62 km) |
