Ironbull Ultra Trail 2026

Ironbull Ultra Trail 2026

Presented by Ironbull · Updated September 2025
Trail Running
Wasau, WI
Sep 12, 2026
Solo Moderate Ultra Mountainous Technical Trail Mixed Surface

15K

Distance
15km
Elevation Gain
1,400ft
Terrain
singletrack
Short · Flat

25K

Distance
25km
Elevation Gain
3,600ft
Terrain
singletrack
Mid-Distance · Rolling

50K

Distance
50km
Elevation Gain
7,200ft
Terrain
singletrack
Long · Mountainous
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About This Event

Ironbull Ultra Trail 2026 invites all trail runners to gather in Rib Mountain State Park for 3-course options at the Ironbull Ultra Trail. Participants can select to compete in 15K, 25K, or 50K, and making the event extra unique, all courses start and finish on the race track at State Park Speedway. Strambecco rates the event as one of the Best Trail-Running Events in the Midwest.

Rib Mountain, with its unique glacially eroded features, stands tall and proud, commanding attention from those who pass by, and the Ironbull Ultra Trail 2026 provides a chance to experience this natural wonder firsthand. The event promises to push the limits of your endurance, while simultaneously allowing you to absorb the beauty and vibrancy of the picturesque trails in peak fall colors.

Ironbull isn’t just about racing. Its mission is to promote outdoor adventure sports, drive economic development, and foster community growth in the Wausau region. Their collaboration with Trail Sisters emphasizes the importance of female representation in outdoor activities.

The 25k & 50k course starts and ends the same. Those racers participating in 25K complete the loop once, and those in the longest distance of 50K run the loop twice. The long winding trails with various rugged terrain also include the difficult descent and climb through Granite Peak Ski Area, including “the steepest hill in Midwest”. Brace yourself for plenty of ascents and descents, with each loop promising about 3,600 feet of elevation gain. Aid stations will be available every 2.5 to 4.0 miles, ensuring you remain fueled and hydrated throughout your journey.

The 15k route offers a formidable challenge with 1,400 feet of elevation gain for those looking to sample the trails without the longer commitment. Explore the heart of Rib Mountain, culminating with a thrilling finish at State Park Speedway.

There will be fully stocked aid stations no more than four miles apart, offering everything from energy drinks to snacks and first aid supplies – this is a cupless race, so participants are advised to bring their own hydration equipment.

Completing the race is an achievement worth celebrating at the finish line party, complete with food, music, drinks, and the camaraderie of fellow racers. Race day opens early at 5:00 am, and the 50K and 25K races start at 7:00 am. The 15K race begins at 1:00 pm. All courses close at 6:30 PM.

Ironbull

Event Organizer
View organizer

Ironbull Inc. is a Wisconsin-based non-profit dedicated to promoting outdoor adventure through endurance events that inspire athletes, engage communities, and highlight Wisconsin’s natural landscapes. Their events attract a range of participants, from novices to elite athletes, with a focus on sustainable outdoor recreation and environmental responsibility. Ironbull’s initiatives aim to strengthen the local community, support health and wellness, and foster a love for the outdoors.

Signature Events

  1. Ironbull Ultra Trail Run
    This flagship trail running event offers distances ranging from a 15K to a 50K ultramarathon, set in the challenging terrains of Rib Mountain State Park and adjacent areas. Known for its rugged single-track trails, technical climbs, and scenic views, this race is a favorite among trail runners looking for an intense, scenic experience. Strambecco.com profiles the event as one of the top trail running events in the Midwest.
  2. Ironbull Red Granite Grinder
    The Red Granite Grinder is a popular gravel cycling race that provides several route options, including a 140-mile ultra-endurance ride through central Wisconsin’s unique mix of trails, forests, and farmland. Riders face a variety of terrains, from smooth roads to steep, rocky paths, making it a challenge for even the most seasoned gravel riders. This event is highlighted on Strambecco.com for its scenic routes and challenging elevation profiles.
  3. Ironbull Big Woods 200
    The Big Woods 200 is a dual-sport adventure race that combines trail running, mountain biking, and paddling through Wisconsin’s picturesque Big Woods region. Athletes navigate varied landscapes throughout this challenging event, making it a draw for multisport athletes looking for a backcountry endurance adventure. Its unique, rugged format also earns recognition on Strambecco.com.
  4. Ironbull Trail Run Series
    This series includes various trail races throughout the year, offering runners multiple opportunities to explore Wisconsin’s beautiful parks and forests. From shorter, family-friendly races to more grueling distances, the series provides runners of all levels a chance to experience trail running while appreciating Wisconsin’s outdoor beauty.

Each Ironbull event is designed to challenge participants physically while fostering community, encouraging environmental stewardship, and celebrating Wisconsin’s outdoor heritage. The organization’s work goes beyond races, aiming to build connections through adventure and highlight the Midwest as a top destination for outdoor endurance events.

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