| Healdsburg to Silver Firs (Washington) | 639.50 mi (1,029.18 km) |
| Healdsburg to Silver Spring (Maryland) | 2,441.46 mi (3,929.16 km) |
| Healdsburg to Silver Springs Shores (Florida) | 2,412.42 mi (3,882.42 km) |
| Healdsburg to Silverdale (Washington) | 624.94 mi (1,005.74 km) |
| Healdsburg to Silverton (Oregon) | 440.88 mi (709.52 km) |
| Healdsburg to Simi Valley (California) | 377.96 mi (608.26 km) |
| Healdsburg to Simpsonville (South Carolina) | 2,247.97 mi (3,617.76 km) |
| Healdsburg to Sioux City (Iowa) | 1,409.25 mi (2,267.97 km) |
| Healdsburg to Sioux Falls (South Dakota) | 1,396.52 mi (2,247.48 km) |
| Healdsburg to Skokie (Illinois) | 1,851.96 mi (2,980.44 km) |
| Healdsburg to Sleepy Hollow (New York) | 2,569.73 mi (4,135.57 km) |
| Healdsburg to Slidell (Louisiana) | 1,958.70 mi (3,152.22 km) |
| Healdsburg to Smithfield (North Carolina) | 2,439.59 mi (3,926.15 km) |
| Healdsburg to Smithfield (Utah) | 622.59 mi (1,001.96 km) |
| Healdsburg to Smithville (Missouri) | 1,513.62 mi (2,435.94 km) |
