| Middelkerke to Sangeorz-Bai | 1,015.82 mi (1,634.81 km) |
| Middelkerke to Sannicolau Mare | 883.42 mi (1,421.72 km) |
| Middelkerke to Santana | 910.82 mi (1,465.83 km) |
| Middelkerke to Satu Mare | 927.65 mi (1,492.92 km) |
| Middelkerke to Scobinti | 1,112.63 mi (1,790.60 km) |
| Middelkerke to Scornicesti | 1,100.49 mi (1,771.06 km) |
| Middelkerke to Sebes | 1,010.80 mi (1,626.73 km) |
| Middelkerke to Seini | 945.76 mi (1,522.05 km) |
| Middelkerke to Sfantu-Gheorghe | 1,108.01 mi (1,783.18 km) |
| Middelkerke to Sibiu | 1,040.91 mi (1,675.18 km) |
| Middelkerke to Sighetu Marmatiei | 967.29 mi (1,556.71 km) |
| Middelkerke to Sighisoara | 1,054.35 mi (1,696.82 km) |
| Middelkerke to Simeria | 990.86 mi (1,594.64 km) |
| Middelkerke to Sinaia | 1,114.94 mi (1,794.32 km) |
| Middelkerke to Slatina | 1,097.98 mi (1,767.02 km) |
