| Sonthofen to Smolyan | 817.93 mi (1,316.32 km) |
| Sonthofen to Sofia | 716.78 mi (1,153.55 km) |
| Sonthofen to Sopot | 780.23 mi (1,255.65 km) |
| Sonthofen to Sozopol | 918.97 mi (1,478.94 km) |
| Sonthofen to Sredets | 898.84 mi (1,446.55 km) |
| Sonthofen to Stamboliyski | 789.59 mi (1,270.72 km) |
| Sonthofen to Stara Zagora | 827.31 mi (1,331.43 km) |
| Sonthofen to Svilengrad | 875.37 mi (1,408.77 km) |
| Sonthofen to Svishtov | 775.54 mi (1,248.11 km) |
| Sonthofen to Targovishte | 842.27 mi (1,355.51 km) |
| Sonthofen to Teteven | 749.78 mi (1,206.65 km) |
| Sonthofen to Troyan | 770.70 mi (1,240.33 km) |
| Sonthofen to Tryavna | 805.91 mi (1,296.98 km) |
| Sonthofen to Tutrakan | 820.94 mi (1,321.18 km) |
| Sonthofen to Varna | 903.76 mi (1,454.45 km) |
