| Donaueschingen to Sulakyurt | 1,355.04 mi (2,180.73 km) |
| Donaueschingen to Sultanbeyli | 1,127.00 mi (1,813.73 km) |
| Donaueschingen to Sultandagi | 1,309.01 mi (2,106.65 km) |
| Donaueschingen to Sultanhani | 1,421.27 mi (2,287.32 km) |
| Donaueschingen to Sultanhisar | 1,207.76 mi (1,943.70 km) |
| Donaueschingen to Suluova | 1,418.72 mi (2,283.21 km) |
| Donaueschingen to Sumbas | 1,563.49 mi (2,516.19 km) |
| Donaueschingen to Sungurlu | 1,384.57 mi (2,228.25 km) |
| Donaueschingen to Surmene | 1,620.54 mi (2,608.01 km) |
| Donaueschingen to Suruc | 1,688.80 mi (2,717.85 km) |
| Donaueschingen to Susehri | 1,553.09 mi (2,499.46 km) |
| Donaueschingen to Susurluk | 1,120.13 mi (1,802.67 km) |
| Donaueschingen to Susuz | 1,764.34 mi (2,839.43 km) |
| Donaueschingen to Sutculer | 1,342.90 mi (2,161.18 km) |
| Donaueschingen to Talas | 1,493.29 mi (2,403.21 km) |
