| Westerlo to Siran | 1,795.01 mi (2,888.79 km) |
| Westerlo to Sirnak | 2,049.71 mi (3,298.69 km) |
| Westerlo to Sirvan | 2,007.77 mi (3,231.19 km) |
| Westerlo to Sivas | 1,724.00 mi (2,774.50 km) |
| Westerlo to Sivasli | 1,482.59 mi (2,386.00 km) |
| Westerlo to Siverek | 1,907.19 mi (3,069.33 km) |
| Westerlo to Sivrice | 1,876.37 mi (3,019.72 km) |
| Westerlo to Sivrihisar | 1,511.03 mi (2,431.77 km) |
| Westerlo to Sogut | 1,430.81 mi (2,302.66 km) |
| Westerlo to Sogutlu | 1,404.12 mi (2,259.72 km) |
| Westerlo to Soke | 1,432.28 mi (2,305.04 km) |
| Westerlo to Solhan | 1,927.74 mi (3,102.39 km) |
| Westerlo to Soma | 1,368.56 mi (2,202.49 km) |
| Westerlo to Sorgun | 1,644.83 mi (2,647.10 km) |
| Westerlo to Suhut | 1,514.06 mi (2,436.65 km) |
