Go beyond your limits and run one of our mayor IAU Competions. Become runner in one of our member federations.
Trail running is completely different, as you run on any unpaved surface.
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Run further than you can even imagine, and in just 24 hours.
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Even a little bit more than the marathon the 50 km is the perfect start for your ultramarathon career.
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The 100 km is our "flagship" since the IAAF officially sanctions this distance and also ratifies 100 km world records.
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