Ironbull Red Granite Grinder 2026

Ironbull Red Granite Grinder 2026

Presented by Ironbull
Gravel Mixed Surface
Wasau, WI
Oct 10, 2026
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About This Event

Winding through central Wisconsin’s countryside, this gravel event offers riders access to terrain typically closed to bikes, including private Managed Forest Lands, the Fenwood-Edgar ATV trail, and sections of Rib Mountain State Park. The course showcases Marathon County’s rural character, passing ginseng fields, dairy farms, and barns while navigating a mix of gravel roads, dirt paths, and snowmobile trails.

Three distance options start and finish in downtown Wausau. The 50-mile route serves as an accessible entry point with 2,800 feet of climbing and a near-perfect finisher rate, comprising mostly pavement and gravel roads while skirting the major climbs. The 85-mile option introduces serious elevation gain at 4,600 feet, featuring technical terrain through the Wausau School Forest’s narrow, tree-lined trails and exposed sections around Edgar. The 144-mile challenge dishes out nearly 6,400 feet of climbing across 60% gravel surfaces, with technical descents and varied terrain designed to test endurance limits.

Aid stations on longer routes provide water, Tailwind Nutrition, and basic food, with drop bag access available. The event maintains cupless aid stations and emphasizes minimal environmental impact through on-site composting and recycling.

Produced by the charitable organization Ironbull, the event doubles as part of the Ironbear 1000 Gravel Series for riders completing 1,000 miles across five Wisconsin gravel races. Post-race festivities include local craft beer, food, and music, with finisher medals for all participants and “Blood of the Bull” wine for category winners.

Ironbull

Event Organizer
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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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