| Rapid City to Sestu | 5,301.84 mi (8,532.48 km) |
| Rapid City to Settimo Torinese | 4,964.62 mi (7,989.78 km) |
| Rapid City to Seveso | 4,986.21 mi (8,024.52 km) |
| Rapid City to Sezze | 5,329.81 mi (8,577.51 km) |
| Rapid City to Siano | 5,421.67 mi (8,725.33 km) |
| Rapid City to Siena | 5,177.21 mi (8,331.92 km) |
| Rapid City to Signa | 5,145.74 mi (8,281.27 km) |
| Rapid City to Silea | 5,090.46 mi (8,192.30 km) |
| Rapid City to Silvi Paese | 5,310.65 mi (8,546.67 km) |
| Rapid City to Sinalunga | 5,196.04 mi (8,362.23 km) |
| Rapid City to Siniscola | 5,259.29 mi (8,464.00 km) |
| Rapid City to Sinnai | 5,305.74 mi (8,538.76 km) |
| Rapid City to Siracusa | 5,639.73 mi (9,076.26 km) |
| Rapid City to Solaro | 4,985.81 mi (8,023.88 km) |
| Rapid City to Soliera | 5,091.54 mi (8,194.04 km) |
