| Encinitas to Silver Firs (Washington) | 1,054.78 mi (1,697.50 km) |
| Encinitas to Silver Spring (Maryland) | 2,267.10 mi (3,648.54 km) |
| Encinitas to Silver Springs Shores (Florida) | 2,093.54 mi (3,369.22 km) |
| Encinitas to Silverdale (Washington) | 1,048.83 mi (1,687.93 km) |
| Encinitas to Silverton (Oregon) | 876.90 mi (1,411.24 km) |
| Encinitas to Simi Valley (California) | 119.98 mi (193.08 km) |
| Encinitas to Simpsonville (South Carolina) | 2,000.93 mi (3,220.19 km) |
| Encinitas to Sioux City (Iowa) | 1,308.28 mi (2,105.48 km) |
| Encinitas to Sioux Falls (South Dakota) | 1,322.74 mi (2,128.75 km) |
| Encinitas to Skokie (Illinois) | 1,721.76 mi (2,770.91 km) |
| Encinitas to Sleepy Hollow (New York) | 2,429.49 mi (3,909.89 km) |
| Encinitas to Slidell (Louisiana) | 1,622.43 mi (2,611.05 km) |
| Encinitas to Smithfield (North Carolina) | 2,213.67 mi (3,562.55 km) |
| Encinitas to Smithfield (Utah) | 675.92 mi (1,087.78 km) |
| Encinitas to Smithville (Missouri) | 1,333.99 mi (2,146.85 km) |
