The Semi-marathon sur le Sentier des combats de la Bzura is a half marathon held in late August in Sochaczew, Poland's Masovian Voivodeship. The event's Polish name is Półmaraton Szlakiem Walk nad Bzurą, with the race starting at MOSiR, Olimpijska 3. It is a 21 km road race, not a multi-distance festival.
The race is part of the Sochaczew Running Trio and has a long local history, with over forty editions held. Its name references the Bzura battle trail, linking the run to the area's wartime history. Recent results show a competitive field: the men's winner finished in 1:14:11, and the first woman placed third overall in 1:16:59.