The HAZE Dirt Run is a muddy obstacle race held in Nebelberg, Upper Austria, close to the Mühlviertel border with Bavaria. It takes place over a weekend in June, featuring the Little HAZE Dirt Run for children on Friday and the main event on Saturday. The adult race is designed for individual participants and teams, without official timing, emphasizing shared completion of the course over achieving a specific result. Entry is limited to 1,200 participants, with registration opening in December.
The course incorporates natural terrain, muddy stretches, and a variety of obstacles, offering seven- and 13-kilometer routes for the main run. The organizers embrace the mud, describing it as one of the year's dirtiest runs; local reports suggest many participants likely complete the muddiest race of their lives. The format suits friends, colleagues, families, club runners, and newcomers alike, supported by on-site food and showers. Now in its fifth edition, the event, though relatively new, already attracts enough interest to be considered a popular obstacle race in its area.