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Ironbull Ultra Trail

Rib Mountain, United States • 13 Sep 2025

The Ironbull Ultra Trail event, known as the Rib Mountain Trail Races, takes place in Wausau, Wisconsin, at Rib Mountain State Park. It features three race distances: a challenging 50k consisting of three loops with over 7,000 feet of elevation gain, a 25k with 1.5 loops, and a 15k single loop with more than 2,500 feet of climbing. The course offers technical single-track trails and scenic views beneath colorful hardwoods, starting and finishing near Granite Peak Ski Area. Aid stations support runners along the route. Post-race festivities include food, music, and local craft beer at the Sundance Chalet, celebrating finishers and volunteers. 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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