Rib Mountain Trail Races (Ironbull)

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

The 50k is comprised of 3 loops on an approximately 10.5 mile course with an elevation gain of over 7,000 feet. 25k runners will do 1.5 loops and the 15k runners will do 1 loop which has an elevation gain of over 2500 feet. Gear bags will be delivered to the top aid station at mile 5 if needed. Racers will be challenged with plenty of climbing and technical single track. - so be sure to prepare for the ups and downs. Runners will start and finish at the bottom of the Granite Peak Ski Area. Two aid stations and water stations along the route support runners. This course provides trail runners a true trail challenge with highlights of Rib Mountain State Park. Stay tuned for course map coming soon.

Upcoming Races

Sep 12 2026
50 KM
7,200 7,200 ft.
Multiple Loop
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 sub ultra distances

25 KM 15 KM

Results

Date Finishers Top Result (F) Top Result (M)
09/13/25 42 7:32:03 5:19:13
09/28/24 47 7:20:55 6:10:44
09/30/23 46 8:01:34 6:09:34
10/01/22 35 7:18:46 5:46:12
10/02/21 43 7:38:28 5:56:01
10/03/20 26 7:38:51 5:57:34
10/05/19 37 7:08:28 6:12:11

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

Catoctin
Frederick, MD - 89 finishers
50 KM
Ring the Springs
Colorado Springs, CO - 127 finishers
100 KM | 50 KM
Niagara Ultra
Niagara On The Lake, ON - 205 finishers
50 Miles | 50 KM
Slay the Dragon
Vernon, BC - 73 finishers
50 KM
Wicked Worm
Grand Rapids, MI - 33 finishers
12 Hours | 6 Hours
Two Hearted Trail Run
Paradise, MI - 71 finishers
50 KM
#onemileatatime 12 Hour Challenge
Griffin, GA - 83 finishers
12 Hours
Highlands Sky
Davis, WV - 163 finishers
40 Miles
Rachel Carson Trail Challenge
Pittsburgh, PA - 516 finishers
37.5 Miles
Alpine Solstice
Bend, OR - 60 finishers
55 KM
View All Results