| Erstein to Smolyan | 954.11 mi (1,535.49 km) |
| Erstein to Sofia | 852.68 mi (1,372.25 km) |
| Erstein to Sopot | 915.47 mi (1,473.31 km) |
| Erstein to Sozopol | 1,052.70 mi (1,694.16 km) |
| Erstein to Sredets | 1,033.02 mi (1,662.48 km) |
| Erstein to Stamboliyski | 925.47 mi (1,489.40 km) |
| Erstein to Stara Zagora | 962.33 mi (1,548.72 km) |
| Erstein to Svilengrad | 1,010.85 mi (1,626.81 km) |
| Erstein to Svishtov | 908.72 mi (1,462.45 km) |
| Erstein to Targovishte | 975.27 mi (1,569.55 km) |
| Erstein to Teteven | 884.95 mi (1,424.19 km) |
| Erstein to Troyan | 905.66 mi (1,457.52 km) |
| Erstein to Tryavna | 940.39 mi (1,513.41 km) |
| Erstein to Tutrakan | 952.00 mi (1,532.09 km) |
| Erstein to Varna | 1,035.78 mi (1,666.92 km) |
