| Mill Valley to Silver Firs (Washington) | 688.10 mi (1,107.39 km) |
| Mill Valley to Silver Spring (Maryland) | 2,438.08 mi (3,923.72 km) |
| Mill Valley to Silver Springs Shores (Florida) | 2,392.48 mi (3,850.32 km) |
| Mill Valley to Silverdale (Washington) | 674.23 mi (1,085.07 km) |
| Mill Valley to Silverton (Oregon) | 490.33 mi (789.11 km) |
| Mill Valley to Simi Valley (California) | 328.85 mi (529.23 km) |
| Mill Valley to Simpsonville (South Carolina) | 2,236.07 mi (3,598.61 km) |
| Mill Valley to Sioux City (Iowa) | 1,409.95 mi (2,269.10 km) |
| Mill Valley to Sioux Falls (South Dakota) | 1,400.01 mi (2,253.10 km) |
| Mill Valley to Skokie (Illinois) | 1,851.69 mi (2,980.01 km) |
| Mill Valley to Sleepy Hollow (New York) | 2,570.32 mi (4,136.53 km) |
| Mill Valley to Slidell (Louisiana) | 1,935.76 mi (3,115.31 km) |
| Mill Valley to Smithfield (North Carolina) | 2,430.49 mi (3,911.49 km) |
| Mill Valley to Smithfield (Utah) | 629.04 mi (1,012.35 km) |
| Mill Valley to Smithville (Missouri) | 1,506.56 mi (2,424.58 km) |
