| Sierpc to Sangeorz-Bai | 440.68 mi (709.21 km) |
| Sierpc to Sannicolau Mare | 473.09 mi (761.37 km) |
| Sierpc to Santana | 458.77 mi (738.31 km) |
| Sierpc to Satu Mare | 379.44 mi (610.65 km) |
| Sierpc to Scobinti | 497.48 mi (800.61 km) |
| Sierpc to Scornicesti | 615.65 mi (990.79 km) |
| Sierpc to Sebes | 509.31 mi (819.66 km) |
| Sierpc to Seini | 388.97 mi (625.98 km) |
| Sierpc to Sfantu-Gheorghe | 557.26 mi (896.83 km) |
| Sierpc to Sibiu | 529.63 mi (852.36 km) |
| Sierpc to Sighetu Marmatiei | 389.48 mi (626.81 km) |
| Sierpc to Sighisoara | 514.39 mi (827.83 km) |
| Sierpc to Simeria | 508.56 mi (818.45 km) |
| Sierpc to Sinaia | 584.12 mi (940.05 km) |
| Sierpc to Slatina | 621.85 mi (1,000.78 km) |
