| Sierpc to Setubal | 1,679.79 mi (2,703.37 km) |
| Sierpc to Sever do Vouga | 1,553.86 mi (2,500.69 km) |
| Sierpc to Silves | 1,730.03 mi (2,784.21 km) |
| Sierpc to Sines | 1,707.02 mi (2,747.19 km) |
| Sierpc to Sintra | 1,685.19 mi (2,712.05 km) |
| Sierpc to Sobrado de Paiva | 1,536.12 mi (2,472.15 km) |
| Sierpc to Sobral de Monte Agraco | 1,665.52 mi (2,680.40 km) |
| Sierpc to Soure | 1,596.17 mi (2,568.79 km) |
| Sierpc to Tabua | 1,558.24 mi (2,507.75 km) |
| Sierpc to Tavira | 1,704.63 mi (2,743.34 km) |
| Sierpc to Tomar | 1,609.31 mi (2,589.93 km) |
| Sierpc to Tondela | 1,552.98 mi (2,499.28 km) |
| Sierpc to Torre de Moncorvo | 1,484.49 mi (2,389.05 km) |
| Sierpc to Torres Novas | 1,620.18 mi (2,607.43 km) |
| Sierpc to Torres Vedras | 1,666.75 mi (2,682.38 km) |
