| Asten to Smolyan | 1,122.53 mi (1,806.54 km) |
| Asten to Sofia | 1,018.59 mi (1,639.27 km) |
| Asten to Sopot | 1,074.92 mi (1,729.92 km) |
| Asten to Sozopol | 1,200.82 mi (1,932.53 km) |
| Asten to Sredets | 1,183.88 mi (1,905.26 km) |
| Asten to Stamboliyski | 1,090.34 mi (1,754.73 km) |
| Asten to Stara Zagora | 1,119.45 mi (1,801.58 km) |
| Asten to Svilengrad | 1,170.95 mi (1,884.47 km) |
| Asten to Svishtov | 1,056.24 mi (1,699.86 km) |
| Asten to Targovishte | 1,120.78 mi (1,803.72 km) |
| Asten to Teteven | 1,044.32 mi (1,680.67 km) |
| Asten to Troyan | 1,063.17 mi (1,711.01 km) |
| Asten to Tryavna | 1,094.37 mi (1,761.22 km) |
| Asten to Tutrakan | 1,089.42 mi (1,753.25 km) |
| Asten to Varna | 1,175.82 mi (1,892.30 km) |
