| Aachen to Smolyan | 1,088.89 mi (1,752.40 km) |
| Aachen to Sofia | 985.26 mi (1,585.62 km) |
| Aachen to Sopot | 1,042.96 mi (1,678.49 km) |
| Aachen to Sozopol | 1,171.34 mi (1,885.09 km) |
| Aachen to Sredets | 1,153.82 mi (1,856.89 km) |
| Aachen to Stamboliyski | 1,057.35 mi (1,701.64 km) |
| Aachen to Stara Zagora | 1,088.04 mi (1,751.03 km) |
| Aachen to Svilengrad | 1,139.04 mi (1,833.11 km) |
| Aachen to Svishtov | 1,026.58 mi (1,652.13 km) |
| Aachen to Targovishte | 1,091.66 mi (1,756.86 km) |
| Aachen to Teteven | 1,012.32 mi (1,629.17 km) |
| Aachen to Troyan | 1,031.57 mi (1,660.16 km) |
| Aachen to Tryavna | 1,063.53 mi (1,711.59 km) |
| Aachen to Tutrakan | 1,061.82 mi (1,708.83 km) |
| Aachen to Varna | 1,147.89 mi (1,847.36 km) |
