| Rapid City to Sugar Hill (Georgia) | 1,232.19 mi (1,983.02 km) |
| Rapid City to Sugar Land (Texas) | 1,083.51 mi (1,743.74 km) |
| Rapid City to Sugarland Run (Virginia) | 1,374.68 mi (2,212.34 km) |
| Rapid City to Sugarmill Woods (Florida) | 1,557.30 mi (2,506.24 km) |
| Rapid City to Suisun City (California) | 1,053.93 mi (1,696.13 km) |
| Rapid City to Suitland (Maryland) | 1,402.04 mi (2,256.37 km) |
| Rapid City to Sulphur (Louisiana) | 1,098.05 mi (1,767.13 km) |
| Rapid City to Sulphur Springs (Texas) | 858.73 mi (1,381.99 km) |
| Rapid City to Summerfield (Maryland) | 1,403.24 mi (2,258.29 km) |
| Rapid City to Summerfield (North Carolina) | 1,340.64 mi (2,157.55 km) |
| Rapid City to Summerlin South (Nevada) | 841.80 mi (1,354.74 km) |
| Rapid City to Summerville (South Carolina) | 1,453.76 mi (2,339.59 km) |
| Rapid City to Summit (Illinois) | 793.93 mi (1,277.71 km) |
| Rapid City to Summit (New Jersey) | 1,482.78 mi (2,386.30 km) |
| Rapid City to Sumner (Washington) | 941.23 mi (1,514.76 km) |
