Logo

Ironbull Ultra Trail

Rib Mountain, United States • 13 Sep 2025

The Ironbull Rib Mountain Trail Races take place in Wausau, Wisconsin, within the scenic Rib Mountain State Park. The event offers three distances: a challenging 50k consisting of three loops with over 7,000 feet of elevation gain, a 25k covering 1.5 loops, and a 15k single loop. The course features technical single-track trails with significant climbs and descents, starting and finishing at the Granite Peak Ski Area. Runners are supported by aid and water stations, with gear drop options available. Post-race festivities include food, music, and local craft beer, creating a festive atmosphere for participants and spectators alike. 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.
Trail runs nearby

Underdown Trail Races

Merrill - 18 mi from Rib Mountain

The Underdown Trail Races, held in Merrill, Wisconsin, offer a challenging trail running experience on the rugged Underdown Trail system shaped by ancient glaciers. The event features distances of 60k, marathon, and half marathon, with courses primarily on singletrack trails that include steep climb..

Wausaultra Single, Double, Limitless

Wausau - 3 mi from Rib Mountain

The WausaUltra event, held in Wausau, Wisconsin at Sylvan Park, offers three race formats: Limitless, Double, and Solo. The course is a scenic 4.167-mile mostly trail loop featuring hills, forested single tracks, creek crossings, and views over a valley. The Limitless race is a "last runner standing..