XVIII Bieg Marszalka is a running event in Sulejówek tied to the memory of Józef Piłsudski. It starts at the Józef Piłsudski Museum on al. Marsz. Józefa Piłsudskiego, with race options for children and adults: 100 m, 200 m, 3.6 km, and 10 km.
The museum also serves as the finish area, putting the race directly beside the place that anchors its historical theme. The event is organized by Towarzystwo Przyjaciół Sulejówka, with patronage from Legia Warszawa and Super Express, and participants can use the museum parking lot near the junction of Piłsudskiego Avenue and Matejki Street.