Wausau, WI
WHY THE 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 IRONBULL Ultra Trail.
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?
See the course description, schedule of events, and more on our website
COURSE
25k & 50k: The 25k adventure consists of a loop throughout Rib Mountain terrain and the 50k adventure consists of two loops. The course includes private property trails exclusive to this event! Gear bags will be delivered to aid stations. Racers will be challenged with plenty of climbing - so be sure to prepare for the ups and downs, with each loop including a couple bonus miles (approximately 16 mile / 26 k loop) and encompassing 3400 feet of elevation gain per loop. Aid stations are between 2.5 miles and 4.0 miles apart.
Upcoming Races
Sep 13 2025
50 KM
7,200
7,200
ft.
Multiple Loop
Course
9 Aid
Stations
11:30 Cutoff
4
Elevation Rating
Very hilly, ~7500-12,500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
Additional Distances
This event also has the following non ultra distances
25 KM
15 KM
