| Aviles to Smolyan | 1,554.60 mi (2,501.88 km) |
| Aviles to Sofia | 1,467.95 mi (2,362.44 km) |
| Aviles to Sopot | 1,539.10 mi (2,476.93 km) |
| Aviles to Sozopol | 1,688.88 mi (2,718.00 km) |
| Aviles to Sredets | 1,665.28 mi (2,680.01 km) |
| Aviles to Stamboliyski | 1,536.65 mi (2,473.00 km) |
| Aviles to Stara Zagora | 1,587.12 mi (2,554.23 km) |
| Aviles to Svilengrad | 1,625.92 mi (2,616.66 km) |
| Aviles to Svishtov | 1,555.03 mi (2,502.58 km) |
| Aviles to Targovishte | 1,620.70 mi (2,608.26 km) |
| Aviles to Teteven | 1,511.18 mi (2,432.02 km) |
| Aviles to Troyan | 1,533.93 mi (2,468.63 km) |
| Aviles to Tryavna | 1,572.91 mi (2,531.35 km) |
| Aviles to Tutrakan | 1,611.65 mi (2,593.70 km) |
| Aviles to Varna | 1,686.77 mi (2,714.59 km) |
