| Ahlen to Smolyan | 1,058.32 mi (1,703.20 km) |
| Ahlen to Sofia | 954.03 mi (1,535.36 km) |
| Ahlen to Sopot | 1,007.13 mi (1,620.82 km) |
| Ahlen to Sozopol | 1,127.88 mi (1,815.15 km) |
| Ahlen to Sredets | 1,112.03 mi (1,789.64 km) |
| Ahlen to Stamboliyski | 1,024.76 mi (1,649.18 km) |
| Ahlen to Stara Zagora | 1,050.41 mi (1,690.47 km) |
| Ahlen to Svilengrad | 1,102.80 mi (1,774.78 km) |
| Ahlen to Svishtov | 984.00 mi (1,583.59 km) |
| Ahlen to Targovishte | 1,047.39 mi (1,685.61 km) |
| Ahlen to Teteven | 976.73 mi (1,571.90 km) |
| Ahlen to Troyan | 994.68 mi (1,600.79 km) |
| Ahlen to Tryavna | 1,024.27 mi (1,648.40 km) |
| Ahlen to Tutrakan | 1,013.52 mi (1,631.10 km) |
| Ahlen to Varna | 1,100.26 mi (1,770.70 km) |
