| Drogheda to Siran | 2,290.98 mi (3,686.98 km) |
| Drogheda to Sirnak | 2,547.19 mi (4,099.30 km) |
| Drogheda to Sirvan | 2,504.60 mi (4,030.76 km) |
| Drogheda to Sivas | 2,224.74 mi (3,580.37 km) |
| Drogheda to Sivasli | 1,990.54 mi (3,203.47 km) |
| Drogheda to Siverek | 2,409.02 mi (3,876.95 km) |
| Drogheda to Sivrice | 2,376.70 mi (3,824.94 km) |
| Drogheda to Sivrihisar | 2,018.27 mi (3,248.09 km) |
| Drogheda to Sogut | 1,938.32 mi (3,119.42 km) |
| Drogheda to Sogutlu | 1,910.52 mi (3,074.69 km) |
| Drogheda to Soke | 1,938.25 mi (3,119.31 km) |
| Drogheda to Solhan | 2,423.82 mi (3,900.76 km) |
| Drogheda to Soma | 1,876.14 mi (3,019.36 km) |
| Drogheda to Sorgun | 2,148.01 mi (3,456.89 km) |
| Drogheda to Suhut | 2,022.06 mi (3,254.19 km) |
