| Cities | Distance |
|---|
| Sierpc to Smolyan | 815.17 mi (1,311.89 km) |
| Sierpc to Sofia | 723.61 mi (1,164.53 km) |
| Sierpc to Sopot | 744.95 mi (1,198.88 km) |
| Sierpc to Sozopol | 812.94 mi (1,308.30 km) |
| Sierpc to Sredets | 806.89 mi (1,298.57 km) |
| Sierpc to Stamboliyski | 776.25 mi (1,249.25 km) |
| Sierpc to Stara Zagora | 773.19 mi (1,244.33 km) |
| Sierpc to Svilengrad | 825.95 mi (1,329.23 km) |
| Sierpc to Svishtov | 691.06 mi (1,112.15 km) |
| Sierpc to Targovishte | 737.43 mi (1,186.78 km) |
| Sierpc to Teteven | 720.46 mi (1,159.46 km) |
| Sierpc to Troyan | 729.02 mi (1,173.25 km) |
| Sierpc to Tryavna | 742.38 mi (1,194.75 km) |
| Sierpc to Tutrakan | 687.63 mi (1,106.63 km) |
| Sierpc to Varna | 767.80 mi (1,235.66 km) |
