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Ironbull Ultra Trail

Rib Mountain, United States • 13 Sep 2025

The Ironbull Ultra Trail is a challenging trail running event held at Rib Mountain State Park in Wausau, Wisconsin. Participants can choose from 50k, 25k, or 15k courses, featuring significant elevation gains and technical single-track trails. The race showcases the natural beauty of Rib Mountain, with runners navigating loops that highlight the park’s rugged terrain. The event includes aid stations, a post-race celebration at Granite Peak Ski Area with food, drinks, and music, and a kids’ run. Registration is open until shortly before the race, and the event emphasizes endurance, strength, and appreciation of nature. Visit the organization's website for the most recent information.

United States Wisconsin Rib Mountain

Race information

Website Registration
50 km
3400 m+
50k
25 km
3400 m+
25k
15 km
1400 m+
15k
Visit the organization's website for the most recent information.
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