| Ciechanow to Siran | 1,234.02 mi (1,985.96 km) |
| Ciechanow to Sirnak | 1,489.78 mi (2,397.57 km) |
| Ciechanow to Sirvan | 1,445.68 mi (2,326.60 km) |
| Ciechanow to Sivas | 1,191.27 mi (1,917.16 km) |
| Ciechanow to Sivasli | 1,083.58 mi (1,743.85 km) |
| Ciechanow to Siverek | 1,375.47 mi (2,213.61 km) |
| Ciechanow to Sivrice | 1,335.96 mi (2,150.03 km) |
| Ciechanow to Sivrihisar | 1,061.11 mi (1,707.69 km) |
| Ciechanow to Sogut | 995.34 mi (1,601.84 km) |
| Ciechanow to Sogutlu | 946.69 mi (1,523.56 km) |
| Ciechanow to Soke | 1,093.89 mi (1,760.45 km) |
| Ciechanow to Solhan | 1,363.99 mi (2,195.13 km) |
| Ciechanow to Soma | 1,001.42 mi (1,611.63 km) |
| Ciechanow to Sorgun | 1,133.62 mi (1,824.39 km) |
| Ciechanow to Suhut | 1,097.55 mi (1,766.34 km) |
