Backyard Ultra Warszawa-Bemowo is an ultra-endurance race in the backyard format, originating in the USA. The Polish edition takes place in Jabłonna. All participants begin together on the hour, completing the same 4.167-mile (6.706 km) loop. Finishing within 45 minutes allows 15 minutes for rest, refueling, gear changes, or preparation for the next loop.
The race continues hourly until only one runner remains capable of finishing a loop within the time limit, thus determining a single winner. Team ZabieganeDni is the organizer, with local support from Gmina Jabłonna, OSiR Jabłonna, and the palace-and-park complex in Jabłonna. This event is part of Backyard Ultra Polska and is presented as the original Polish challenge, offering a Silver Ticket.