| Siedlce to Solofra | 857.75 mi (1,380.42 km) |
| Siedlce to Somma Lombardo | 759.70 mi (1,222.63 km) |
| Siedlce to Somma Vesuviana | 863.39 mi (1,389.50 km) |
| Siedlce to Sommacampagna | 697.72 mi (1,122.87 km) |
| Siedlce to Sona | 696.62 mi (1,121.10 km) |
| Siedlce to Sondrio | 695.22 mi (1,118.86 km) |
| Siedlce to Sora | 828.02 mi (1,332.57 km) |
| Siedlce to Sorbolo | 738.99 mi (1,189.30 km) |
| Siedlce to Soresina | 737.18 mi (1,186.38 km) |
| Siedlce to Sorisole | 722.77 mi (1,163.18 km) |
| Siedlce to Sorrento | 880.28 mi (1,416.67 km) |
| Siedlce to Sorso | 1,016.95 mi (1,636.62 km) |
| Siedlce to Sortino | 1,094.28 mi (1,761.08 km) |
| Siedlce to Soverato Marina | 971.17 mi (1,562.95 km) |
| Siedlce to Sovicille | 798.07 mi (1,284.36 km) |
