Bükkzsérc hosts the opening event of the 2025 “MTB and trail running Challenge.” This event combines trail running with MTB, gravel, e-bike, and a bike performance tour. A “Mini family distance and trail run” is also available for families.
The schedule is organized: family runners start first, followed by the bike tour, then the long and short races. Trail running awards are presented before the other categories. The long course offers a pairs option for men, women, and mixed teams, where each runner is scored individually, and the second teammate's finish time determines the team's ranking. A prize draw will be held at the series finale, with entry chances increasing for each round started.