| Altadena to Silver Firs (Washington) | 967.11 mi (1,556.41 km) |
| Altadena to Silver Spring (Maryland) | 2,285.18 mi (3,677.64 km) |
| Altadena to Silver Springs Shores (Florida) | 2,141.88 mi (3,447.03 km) |
| Altadena to Silverdale (Washington) | 960.29 mi (1,545.43 km) |
| Altadena to Silverton (Oregon) | 786.45 mi (1,265.67 km) |
| Altadena to Simi Valley (California) | 35.46 mi (57.07 km) |
| Altadena to Simpsonville (South Carolina) | 2,033.25 mi (3,272.20 km) |
| Altadena to Sioux City (Iowa) | 1,305.42 mi (2,100.87 km) |
| Altadena to Sioux Falls (South Dakota) | 1,314.57 mi (2,115.60 km) |
| Altadena to Skokie (Illinois) | 1,728.25 mi (2,781.35 km) |
| Altadena to Sleepy Hollow (New York) | 2,441.22 mi (3,928.77 km) |
| Altadena to Slidell (Louisiana) | 1,673.17 mi (2,692.70 km) |
| Altadena to Smithfield (North Carolina) | 2,242.26 mi (3,608.57 km) |
| Altadena to Smithfield (Utah) | 629.43 mi (1,012.97 km) |
| Altadena to Smithville (Missouri) | 1,347.81 mi (2,169.09 km) |
