| Riverdale to Silver Firs (Washington) | 2,180.77 mi (3,509.61 km) |
| Riverdale to Silver Spring (Maryland) | 556.95 mi (896.33 km) |
| Riverdale to Silver Springs Shores (Florida) | 338.45 mi (544.69 km) |
| Riverdale to Silverdale (Washington) | 2,201.97 mi (3,543.72 km) |
| Riverdale to Silverton (Oregon) | 2,174.61 mi (3,499.70 km) |
| Riverdale to Simi Valley (California) | 1,960.10 mi (3,154.47 km) |
| Riverdale to Simpsonville (South Carolina) | 147.10 mi (236.73 km) |
| Riverdale to Sioux City (Iowa) | 896.06 mi (1,442.07 km) |
| Riverdale to Sioux Falls (South Dakota) | 956.22 mi (1,538.89 km) |
| Riverdale to Skokie (Illinois) | 612.80 mi (986.21 km) |
| Riverdale to Sleepy Hollow (New York) | 777.30 mi (1,250.95 km) |
| Riverdale to Slidell (Louisiana) | 387.80 mi (624.10 km) |
| Riverdale to Smithfield (North Carolina) | 370.23 mi (595.83 km) |
| Riverdale to Smithfield (Utah) | 1,595.58 mi (2,567.84 km) |
| Riverdale to Smithville (Missouri) | 692.83 mi (1,115.00 km) |
