| Strasbourg to Smolyan | 955.04 mi (1,537.00 km) |
| Strasbourg to Sofia | 853.30 mi (1,373.25 km) |
| Strasbourg to Sopot | 915.61 mi (1,473.53 km) |
| Strasbourg to Sozopol | 1,052.06 mi (1,693.13 km) |
| Strasbourg to Sredets | 1,032.57 mi (1,661.76 km) |
| Strasbourg to Stamboliyski | 926.07 mi (1,490.37 km) |
| Strasbourg to Stara Zagora | 962.32 mi (1,548.70 km) |
| Strasbourg to Svilengrad | 1,011.13 mi (1,627.25 km) |
| Strasbourg to Svishtov | 907.91 mi (1,461.13 km) |
| Strasbourg to Targovishte | 974.37 mi (1,568.09 km) |
| Strasbourg to Teteven | 885.05 mi (1,424.35 km) |
| Strasbourg to Troyan | 905.63 mi (1,457.47 km) |
| Strasbourg to Tryavna | 940.11 mi (1,512.96 km) |
| Strasbourg to Tutrakan | 950.48 mi (1,529.65 km) |
| Strasbourg to Varna | 1,034.52 mi (1,664.90 km) |
