| Bettendorf to Silver Firs (Washington) | 1,602.30 mi (2,578.66 km) |
| Bettendorf to Silver Spring (Maryland) | 730.15 mi (1,175.06 km) |
| Bettendorf to Silver Springs Shores (Florida) | 982.54 mi (1,581.25 km) |
| Bettendorf to Silverdale (Washington) | 1,626.19 mi (2,617.10 km) |
| Bettendorf to Silverton (Oregon) | 1,631.03 mi (2,624.89 km) |
| Bettendorf to Simi Valley (California) | 1,613.02 mi (2,595.90 km) |
| Bettendorf to Simpsonville (South Carolina) | 649.48 mi (1,045.23 km) |
| Bettendorf to Sioux City (Iowa) | 310.15 mi (499.15 km) |
| Bettendorf to Sioux Falls (South Dakota) | 346.21 mi (557.18 km) |
| Bettendorf to Skokie (Illinois) | 144.64 mi (232.77 km) |
| Bettendorf to Sleepy Hollow (New York) | 860.78 mi (1,385.30 km) |
| Bettendorf to Slidell (Louisiana) | 780.12 mi (1,255.49 km) |
| Bettendorf to Smithfield (North Carolina) | 776.28 mi (1,249.31 km) |
| Bettendorf to Smithfield (Utah) | 1,098.71 mi (1,768.20 km) |
| Bettendorf to Smithville (Missouri) | 262.53 mi (422.50 km) |
