| Rancho San Diego to Silver Firs (Washington) | 1,078.50 mi (1,735.68 km) |
| Rancho San Diego to Silver Spring (Maryland) | 2,256.31 mi (3,631.18 km) |
| Rancho San Diego to Silver Springs Shores (Florida) | 2,074.54 mi (3,338.66 km) |
| Rancho San Diego to Silverdale (Washington) | 1,072.93 mi (1,726.72 km) |
| Rancho San Diego to Silverton (Oregon) | 901.94 mi (1,451.54 km) |
| Rancho San Diego to Simi Valley (California) | 147.99 mi (238.16 km) |
| Rancho San Diego to Simpsonville (South Carolina) | 1,986.27 mi (3,196.59 km) |
| Rancho San Diego to Sioux City (Iowa) | 1,304.13 mi (2,098.79 km) |
| Rancho San Diego to Sioux Falls (South Dakota) | 1,320.15 mi (2,124.58 km) |
| Rancho San Diego to Skokie (Illinois) | 1,714.54 mi (2,759.29 km) |
| Rancho San Diego to Sleepy Hollow (New York) | 2,420.46 mi (3,895.35 km) |
| Rancho San Diego to Slidell (Louisiana) | 1,602.97 mi (2,579.73 km) |
| Rancho San Diego to Smithfield (North Carolina) | 2,199.95 mi (3,540.48 km) |
| Rancho San Diego to Smithfield (Utah) | 686.17 mi (1,104.29 km) |
| Rancho San Diego to Smithville (Missouri) | 1,324.93 mi (2,132.26 km) |
