| Donaueschingen to Siran | 1,599.50 mi (2,574.15 km) |
| Donaueschingen to Sirnak | 1,849.10 mi (2,975.84 km) |
| Donaueschingen to Sirvan | 1,808.76 mi (2,910.92 km) |
| Donaueschingen to Sivas | 1,518.71 mi (2,444.12 km) |
| Donaueschingen to Sivasli | 1,244.94 mi (2,003.53 km) |
| Donaueschingen to Siverek | 1,697.81 mi (2,732.36 km) |
| Donaueschingen to Sivrice | 1,670.82 mi (2,688.93 km) |
| Donaueschingen to Sivrihisar | 1,285.06 mi (2,068.10 km) |
| Donaueschingen to Sogut | 1,203.41 mi (1,936.71 km) |
| Donaueschingen to Sogutlu | 1,183.59 mi (1,904.80 km) |
| Donaueschingen to Soke | 1,183.86 mi (1,905.24 km) |
| Donaueschingen to Solhan | 1,730.83 mi (2,785.50 km) |
| Donaueschingen to Soma | 1,127.30 mi (1,814.21 km) |
| Donaueschingen to Sorgun | 1,433.78 mi (2,307.45 km) |
| Donaueschingen to Suhut | 1,279.59 mi (2,059.31 km) |
