| Donauworth to Smolyan | 834.97 mi (1,343.75 km) |
| Donauworth to Sofia | 731.66 mi (1,177.49 km) |
| Donauworth to Sopot | 790.82 mi (1,272.71 km) |
| Donauworth to Sozopol | 922.87 mi (1,485.21 km) |
| Donauworth to Sredets | 904.36 mi (1,455.43 km) |
| Donauworth to Stamboliyski | 804.01 mi (1,293.93 km) |
| Donauworth to Stara Zagora | 836.57 mi (1,346.33 km) |
| Donauworth to Svilengrad | 886.84 mi (1,427.22 km) |
| Donauworth to Svishtov | 778.17 mi (1,252.34 km) |
| Donauworth to Targovishte | 844.08 mi (1,358.42 km) |
| Donauworth to Teteven | 760.16 mi (1,223.36 km) |
| Donauworth to Troyan | 779.93 mi (1,255.17 km) |
| Donauworth to Tryavna | 812.96 mi (1,308.33 km) |
| Donauworth to Tutrakan | 817.60 mi (1,315.80 km) |
| Donauworth to Varna | 902.61 mi (1,452.61 km) |
