| Sieradz to Sangeorz-Bai | 395.05 mi (635.78 km) |
| Sieradz to Sannicolau Mare | 391.76 mi (630.48 km) |
| Sieradz to Santana | 383.51 mi (617.20 km) |
| Sieradz to Satu Mare | 321.65 mi (517.65 km) |
| Sieradz to Scobinti | 468.32 mi (753.69 km) |
| Sieradz to Scornicesti | 554.20 mi (891.90 km) |
| Sieradz to Sebes | 447.00 mi (719.37 km) |
| Sieradz to Seini | 334.47 mi (538.28 km) |
| Sieradz to Sfantu-Gheorghe | 509.37 mi (819.75 km) |
| Sieradz to Sibiu | 470.53 mi (757.25 km) |
| Sieradz to Sighetu Marmatiei | 341.92 mi (550.26 km) |
| Sieradz to Sighisoara | 461.83 mi (743.24 km) |
| Sieradz to Simeria | 442.01 mi (711.35 km) |
| Sieradz to Sinaia | 531.98 mi (856.15 km) |
| Sieradz to Slatina | 558.86 mi (899.40 km) |
