| Soest to Smolyan | 1,043.05 mi (1,678.62 km) |
| Soest to Sofia | 938.77 mi (1,510.80 km) |
| Soest to Sopot | 992.17 mi (1,596.75 km) |
| Soest to Sozopol | 1,113.53 mi (1,792.05 km) |
| Soest to Sredets | 1,097.53 mi (1,766.31 km) |
| Soest to Stamboliyski | 1,009.60 mi (1,624.79 km) |
| Soest to Stara Zagora | 1,035.58 mi (1,666.61 km) |
| Soest to Svilengrad | 1,087.89 mi (1,750.79 km) |
| Soest to Svishtov | 969.53 mi (1,560.30 km) |
| Soest to Targovishte | 1,033.07 mi (1,662.57 km) |
| Soest to Teteven | 961.75 mi (1,547.79 km) |
| Soest to Troyan | 979.79 mi (1,576.82 km) |
| Soest to Tryavna | 1,009.55 mi (1,624.72 km) |
| Soest to Tutrakan | 999.55 mi (1,608.62 km) |
| Soest to Varna | 1,086.26 mi (1,748.17 km) |
