| Heerlen to Siran | 1,746.78 mi (2,811.17 km) |
| Heerlen to Sirnak | 2,001.40 mi (3,220.95 km) |
| Heerlen to Sirvan | 1,959.49 mi (3,153.49 km) |
| Heerlen to Sivas | 1,675.61 mi (2,696.63 km) |
| Heerlen to Sivasli | 1,434.96 mi (2,309.35 km) |
| Heerlen to Siverek | 1,858.79 mi (2,991.43 km) |
| Heerlen to Sivrice | 1,827.99 mi (2,941.86 km) |
| Heerlen to Sivrihisar | 1,462.86 mi (2,354.24 km) |
| Heerlen to Sogut | 1,382.70 mi (2,225.23 km) |
| Heerlen to Sogutlu | 1,355.83 mi (2,182.00 km) |
| Heerlen to Soke | 1,385.61 mi (2,229.92 km) |
| Heerlen to Solhan | 1,879.49 mi (3,024.75 km) |
| Heerlen to Soma | 1,321.23 mi (2,126.31 km) |
| Heerlen to Sorgun | 1,596.42 mi (2,569.20 km) |
| Heerlen to Suhut | 1,466.24 mi (2,359.68 km) |
