| Rapid City to Sangeorgiu de Mures | 5,409.61 mi (8,705.93 km) |
| Rapid City to Sangeorz-Bai | 5,369.32 mi (8,641.08 km) |
| Rapid City to Sannicolau Mare | 5,326.82 mi (8,572.70 km) |
| Rapid City to Santana | 5,336.97 mi (8,589.02 km) |
| Rapid City to Satu Mare | 5,296.76 mi (8,524.32 km) |
| Rapid City to Scobinti | 5,428.68 mi (8,736.62 km) |
| Rapid City to Scornicesti | 5,523.52 mi (8,889.24 km) |
| Rapid City to Sebes | 5,417.69 mi (8,718.92 km) |
| Rapid City to Seini | 5,310.03 mi (8,545.66 km) |
| Rapid City to Sfantu-Gheorghe | 5,484.71 mi (8,826.78 km) |
| Rapid City to Sibiu | 5,443.42 mi (8,760.34 km) |
| Rapid City to Sighetu Marmatiei | 5,316.58 mi (8,556.21 km) |
| Rapid City to Sighisoara | 5,437.33 mi (8,750.54 km) |
| Rapid City to Simeria | 5,407.95 mi (8,703.25 km) |
| Rapid City to Sinaia | 5,507.41 mi (8,863.32 km) |
