| Thouare-sur-Loire to Silver Firs (Washington) | 4,961.45 mi (7,984.69 km) |
| Thouare-sur-Loire to Silver Spring (Maryland) | 3,702.57 mi (5,958.71 km) |
| Thouare-sur-Loire to Silver Springs Shores (Florida) | 4,350.88 mi (7,002.06 km) |
| Thouare-sur-Loire to Silverdale (Washington) | 4,987.38 mi (8,026.41 km) |
| Thouare-sur-Loire to Silverton (Oregon) | 5,136.65 mi (8,266.64 km) |
| Thouare-sur-Loire to Simi Valley (California) | 5,597.16 mi (9,007.76 km) |
| Thouare-sur-Loire to Simpsonville (South Carolina) | 4,111.46 mi (6,616.76 km) |
| Thouare-sur-Loire to Sioux City (Iowa) | 4,357.16 mi (7,012.17 km) |
| Thouare-sur-Loire to Sioux Falls (South Dakota) | 4,323.36 mi (6,957.77 km) |
| Thouare-sur-Loire to Skokie (Illinois) | 4,033.32 mi (6,491.00 km) |
| Thouare-sur-Loire to Sleepy Hollow (New York) | 3,483.71 mi (5,606.49 km) |
| Thouare-sur-Loire to Slidell (Louisiana) | 4,643.56 mi (7,473.09 km) |
| Thouare-sur-Loire to Smithfield (North Carolina) | 3,904.55 mi (6,283.76 km) |
| Thouare-sur-Loire to Smithfield (Utah) | 4,954.79 mi (7,973.96 km) |
| Thouare-sur-Loire to Smithville (Missouri) | 4,425.95 mi (7,122.88 km) |
