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Iron Cowboy Triathlon Run Course



11.0 mile 17.7 kilometer loop
74% Runnable


Ascent: 3,153' 961 m
Descent: -3,151' -960 m
High: 10,458' 3,187 m
Low: 8,730' 2,661 m


Avg Grade: 11% (6°)
Max Grade: 35% (19°)


No Dogs
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Trail shared by Vince Romney

The run portion of the "Utah's Toughest" Triathlon put on by Iron Cowboy Events.

Vince Romney

Features Fall Colors · Lake · Spring · Views · Wildflowers · Wildlife

No known restrictions other than the Watershed status (no dogs).


A loop trail running within the Brighton Ski Resort area, including sections of the Great Western Trail. The loop circumnavigates Twin Lakes Reservoir, Lake Mary, and Lake Catherine.

Need to Know

You'll be connecting several trails, so be aware of the junctions and which direction you'll be turning.

Runner Notes

If you run with a water filter, you'll have significant access to water... otherwise, carry a large 2-3 liter bladder.


The course starts at the bottom of Milly Express chair lift and follows the service road up to Twin Lakes Reservoir. The course then goes around Twin Lakes Reservoir counterclockwise. From here, the course jumps on a trail that will take athletes next to Lake Mary.

From here, the course joins the Lake Mary Trail heading up the mountain. You'll reach the turn around and head back down. Along this trail you'll encounter what we call the "Sand Wall" (we highly recommend gaiters).

The course will take a right on the trail and go around Lake Catherine. After going around Lake Catherine, you'll continue back down the same trail to Lake Mary. Once back at Lake Mary, the course will turn right and here you'll follow the trail to Clayton Peak. When the course meets up with Western Trail, the course turns left and heads toward the Great Western Express chair lift.

The course turns left down Elk Park ski run. The course follows Elk Park ski run and then jumps onto the Golden Needle ski run. The course will go by the Snake Creek Express chair lift and run down Snake Creek Rd (service road). Once at the bottom of the trail the course turns left and follows a trail next to the parking lot

Flora & Fauna

You'll likely encounter deer, moose, and millions of squirrels and birds.

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History & Background

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Land Manager: Brighton Ski Resort

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in Utah


3 Views Last Month
249 Since Aug 13, 2018



Sunrise from Catherine Pass.
Oct 15, 2015 near Alta, UT
Lake Mary and more rocky trail.
Oct 10, 2019 near Brighton, UT
Sunset Peak from Ridge Trail.
Oct 10, 2019 near Brighton, UT
Great views at Lake Mary
Aug 5, 2017 near Alta, UT
Lake Mary 8.5.17
Aug 5, 2017 near Alta, UT
Lake Mary from the Brighton Lakes Trail
Aug 23, 2018 near Alta, UT


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