| Ada to Silver Firs (Washington) | 5,575.72 mi (8,973.25 km) |
| Ada to Silver Spring (Maryland) | 4,659.34 mi (7,498.49 km) |
| Ada to Silver Springs Shores (Florida) | 5,337.77 mi (8,590.32 km) |
| Ada to Silverdale (Washington) | 5,598.65 mi (9,010.16 km) |
| Ada to Silverton (Oregon) | 5,767.23 mi (9,281.45 km) |
| Ada to Simi Valley (California) | 6,338.78 mi (10,201.28 km) |
| Ada to Simpsonville (South Carolina) | 5,072.32 mi (8,163.12 km) |
| Ada to Sioux City (Iowa) | 5,198.67 mi (8,366.45 km) |
| Ada to Sioux Falls (South Dakota) | 5,154.68 mi (8,295.65 km) |
| Ada to Skokie (Illinois) | 4,924.23 mi (7,924.78 km) |
| Ada to Sleepy Hollow (New York) | 4,438.93 mi (7,143.76 km) |
| Ada to Slidell (Louisiana) | 5,596.25 mi (9,006.29 km) |
| Ada to Smithfield (North Carolina) | 4,875.57 mi (7,846.47 km) |
| Ada to Smithfield (Utah) | 5,698.83 mi (9,171.37 km) |
| Ada to Smithville (Missouri) | 5,300.64 mi (8,530.56 km) |
