IX Krwiobieg Warszawa - ultramaraton 100 km 2026

Krwiobieg Warszawa is an annual running event on the Vistula riverbank in Warsaw, based at Wybrzeże Gdyńskie 4 near the Polish Olympic Center. Its 50 km option is an ultramarathon, with the start listed in the morning, and the wider program ranges from short children’s races to 5 km running, 5 km Nordic walking, relay racing, and a 100 km ultramarathon. The event is organized by the Mazovian Regional Branch of the Polish Red Cross in Warsaw together with the Adliner agency. Its running program is tied directly to a public-health mission: promoting voluntary blood donation, encouraging outdoor exercise, and raising money for people who need support, including education projects for children and young people from Mazovia. It also offers virtual race options, so not everyone involved has to be on the Warsaw course.