Beskid Extreme Triathlon 2026

The Diablak Beskid Extreme Triathlon is a mountain triathlon series held in Żywiec, located in Poland’s southern Śląskie region. The race weekend typically occurs in June. It is part of the Ultra Cykle Poland Extreme Triathlon & Gravel Series and features multiple race distances, ranging from a quarter-Ironman and half-Ironman to the full Diablak extreme distance. The races are designed for athletes seeking a challenge beyond standard road triathlons. The Beskid mountain terrain makes the cycling and running portions the primary tests of endurance. One day hosts the Diablak M, Diablak L, and Bike&Trail races, with the Diablak race taking place the following day. The event attracts small but dedicated fields of athletes from Poland and other countries. It is organized by Holistix Group, with local assistance from MOSiR Żywiec and the Żywiec municipality.