Saturday, Sep 16, 2023 @ 12:00 PM
This Event Took Place Sat. Sep 16, 2023

New Buckle for 2024, Courtesy of the Artisans at Sheridan Buckle Company in NM

More Vert Than Most Mountain 100 Milers

A 50 That's More Difficult Than Your Last 100

How do you build a 50 miler that hits harder than most 100 milers?


Start with a stout mountain hundred miler. Anything with ~24k feet of climbing should do.

Find 50 miles of flat and discard it.

Add copious amounts of highly-technical, unforgiving, why-would-they-even-think-this-is-a-good-idea trails.

Make the average elevation nearly two miles above sea level.

Set it in the most stunning mountain scenery in the lower 48 states using a (patent-pending) broken-windshield race format.

Add amazing, die-hard volunteers, an incredible community of runners who are low-key badasses, questionable race organizers, all-you-can-drink Dr. Thunder, and all-you-can-eat generic sour cream pringles.

Oh yeah--and two orange traffic cones for a finish to keep your ego in check.


Dare Mighty Things

"Far better it is to dare mighty things, to win glorious triumphs, even though checkered by failure... than to rank with those poor spirits who neither enjoy nor suffer much, because they live in a gray twilight that knows not victory nor defeat."

-Theodore Roosevelt

Elevation Gain: 23,582 Feet

Documentary of the Ouray 100. The back 50 is the same.

Service Requirement

Each participant is required to complete (8) hours of volunteer service prior to September 1.

This can be volunteering at a trail ultramarathon or performing physical trail work. Crewing/pacing/coaching do not qualify.

Opt Out Fee - Participants may opt out of the service requirement by making a $100 donation to Ouray Trail Group. This option is available at checkout.

Entrants who have not submitted their service form or paid the opt-out fee by September 10 will forfeit their registration fee and not be permitted to participate in the event. No exceptions.

Service form can be found on our website (

No Longer UTMB Qualifier

Beginning in 2022, we will no longer go through the process to be a UTMB qualifier.

Cash Purse / Drug Testing

Top male 50 mile finisher will receive $500. Top female 50 mile finisher will receive $625. The payment of these cash awards will be subject to the results of urine and/or blood testing that will be administered to winners immediately after the event. Banned substances tested for will include (but not be limited to) steroids, testosterone, EPO, and THC. (Fear not, Colorado people. Only THC levels above the threshold of 150 ng/ml will trigger a positive result. Doping agencies chose that threshold so that out-of-competition use should not trigger a positive result. In other words, lay off the magic brownies prior to and during the event.)


Friday, 9/13/24, Fellin Park (look for a gazebo)
4:00 - 7:00 PM - Early packet pickup
6:00 PM - Brief pre-race talk (optional, but super useful for learning things like where mountain lions have denned near trails)

Saturday, 9/14/24, Fellin Park
11:00 - 11:45 AM - Race day packet pickup/runner check-in
12:00 PM - 50 mile start (24 hour cutoff)

Sunday, 9/15/24, Fellin Park
11:00 AM - Formal drug testing samples collected from 1st place finisher (***winners may also be required to provide urine and/or blood samples after crossing the finish line***)
12:00 PM - Cutoff for official finish
12:30 PM - Award ceremony

Live Tracking

Racers will be required to carry a SPOT tracker during the race. (We will provide this, even if you already own one.) Runners' locations will be updated every five minutes.

No Whining

Non Laurus Luctatio

“Not the prize but the struggle”

This event is about as tough as they come while still being doable. It's low key, no frills, and old school. This event goes against the grain of the everyone's-a-winner, participant-trophy nonsense that seems to be creeping into the sport. If you survive this bad boy, you'll uneventfully pass through two orange cones and be handed a cold piece of metal you can wear on a belt. With pride

You'll Get the Best Vert of Your Life

Podium Awards Laser Cut from Genuine Traffic Cones

Event's current local time: 10:46 AM MT


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