Presented by the Village of Rib mountain

50k, 25K, 15K & kids run
September 13, 2025
WAUSAU, WI

why Rib Mountain Trail Races?

Rib Mountain is a beauty to behold any season of the year. Whether you call it home, or if you are just passing through, you can’t help but admire this glacially eroded creation. But why observe from a distance what you can experience through all your senses. Welcome to the Rib Mountain Trail Races!

Rated by Strambecco as one of the 2024 Best Trail Running Events in the Midwest, what better way to discover than to dive right in the twists and climbs, running under a bounty of colored hardwoods on the gorgeous trails of Rib Mountain!

Do you have the endurance and strength to finish this challenge?

Read racer report

Course Description

New for 2025 - This years course takes you through the same scenic Rib Mountain State Park trails with a little shorter distance per loop at roughly 10.6 miles. The 15K will do one full loop, the 25K will do 1.5 loops and then descend back down to the the finish (blue line on map). The 50K will do 3 loops. There will be 2 main aid stations, one at the top at 5 miles and one at the bottom with water stations at points throughout the course.

COURSE MAP - HERE

Finish Line Festivities

The well deserved post race party will be held at the finish line! Family, friends, food, music, and most importantly, beer (including Red Eye local craft brews) and drinks, are there to congratulate you, an IRONBULL finisher. All racers & volunteers receive a free meal & drink and spectators may purchase onsite.

Green Initiative

Ways to enjoy the race and enjoy the beauty around us with minimal impact!

Aid stations are cupless - please plan accordingly by bringing your own hydration system to refill at the aid stations
Compost and recycling onsite with compostable food trays

TRAIL SISTERS APPROVED

The Rib Mountain Trail Races is a Trail Sisters approved race!

Trail Sisters was created to constitute for an equitable outdoors both recreationally and throughout the industry. Female voice and representation are essential in the future of our outdoors, impacting the role we play both on and off the trails.

Wausau has a Trail Sisters group - connect here.

presenting sponsor

Venue Sponsor

Official beer

official protein

Official energy

Kids Run sponsor

Preferred Hotel

Looking to take your IRONBULL race weekend to the next level? Check out all the fun and affordable room options from our partners at bantr with promo code b967216 for a 15% discount on your hotel stay.