| Piera to Smolyan | 1,183.16 mi (1,904.12 km) |
| Piera to Sofia | 1,106.12 mi (1,780.12 km) |
| Piera to Sopot | 1,178.32 mi (1,896.33 km) |
| Piera to Sozopol | 1,329.35 mi (2,139.38 km) |
| Piera to Sredets | 1,304.47 mi (2,099.34 km) |
| Piera to Stamboliyski | 1,170.31 mi (1,883.43 km) |
| Piera to Stara Zagora | 1,225.19 mi (1,971.76 km) |
| Piera to Svilengrad | 1,258.28 mi (2,025.01 km) |
| Piera to Svishtov | 1,205.46 mi (1,940.01 km) |
| Piera to Targovishte | 1,268.28 mi (2,041.09 km) |
| Piera to Teteven | 1,152.75 mi (1,855.17 km) |
| Piera to Troyan | 1,175.61 mi (1,891.97 km) |
| Piera to Tryavna | 1,215.27 mi (1,955.79 km) |
| Piera to Tutrakan | 1,268.06 mi (2,040.75 km) |
| Piera to Varna | 1,335.41 mi (2,149.14 km) |
