How do you qualify for the Crazy Mountain 100?

For 2026, you need to have finished a trail ultra of at least 50 miles with 6,500 feet of elevation gain in under 16 hours, within two years of race day. Starting in 2027, requirements get much harder: a 100K with 10,000 feet of gain, or a 100-miler with 15,000 feet of gain.

When does Crazy Mountain 100 registration open?

Registration opens December 14th at 6:00 AM MST on UltraSignup. The race typically sells out, so set an alarm. You must submit your qualifying race at registration—no exceptions.

What is the Crazy Mountain 100 trail work requirement?

Every runner must complete 8 hours of volunteer trail work within one year of their race. Submit signed documentation to forms@crazymountainultra.com by June 30th. If your paperwork isn't in by the deadline, you're removed from the race.

Is there a waitlist for the Crazy Mountain 100?

Yes. The race maintains a gender equity policy on the waitlist—if the percentage of female runners drops below the level at sellout, the next female on the waitlist gets bumped up. Otherwise it's first-come, first-served.

What qualifies for the Crazy Mountain 100 in 2027?

Starting 2027, qualifiers must be significantly harder: a 100K trail race with at least 10,000 feet of gain, OR a 100-mile mountain trail race with at least 15,000 feet of gain finished within 36 hours. The qualifying race must be completed in 2025 or 2026. Copper Kings 100 finishes under 34 hours are also accepted.

Crazy Mountain 100: How to Qualify & Register

The Quick Version

Finish a hard trail ultra. Do 8 hours of trail work. Register on December 14th before it sells out.

That’s the short answer. Here are the details.

2026 Qualification Requirements

To register for the 2026 Crazy Mountain 100, you must have finished a qualifying trail ultra within two years of race day (July 24, 2026).

Requirement	Details
Minimum distance	50 miles
Minimum elevation gain	6,500 feet
Time limit	Under 16 hours (for 50-milers)
Recency	Completed within 2 years of race start
Trail only	Road races, fat ass events, and short-loop courses don’t count

What Doesn’t Count

DNFs (even if you hit 50 miles before dropping)
Road ultras or flat courses
Fat ass / unsanctioned events
This can’t be your first ultra

Your qualifier must be an official race with publicly posted results, or a verified FKT listed on the FKT website. You submit your qualifying race at registration. No exceptions—if you don’t have one, you can’t register.

2027 Qualification Changes

The bar is going up significantly. Starting in 2027, you’ll need one of these:

Option	Distance	Elevation Gain	Time Limit
100K trail race	100K (62 miles)	10,000+ feet	Race cutoff
100-mile mountain race	100 miles	15,000+ feet	36 hours (or race cutoff if >23K ft gain)

Your qualifying race must be completed in 2025 or 2026 to enter the 2027 race.

One exception: A Copper Kings 100 finish in 34 hours or less is accepted for 2027.

The race organizers are clear about why: “These rules have been put in place to prepare folks.” The Crazy Mountain 100 is a serious mountain race with 23,000 feet of climbing, remote sections, and a 36-hour cutoff. The tighter qualifiers are designed to make sure everyone on the start line has the fitness to handle it safely.

If you’re planning to run the 2027 race, make sure you have a qualifying race on your calendar for 2025 or 2026.

Registration

Detail	Info
Opens	December 14th at 6:00 AM MST
Platform	UltraSignup
Sells out?	Yes, typically fast

Set an alarm. Have your qualifying race information ready when you register—you submit it during signup. No qualifier = no registration.

The Trail Work Requirement

This is the one that catches people off guard. Every runner must complete 8 hours of volunteer trail work before race day.

Detail	Info
Hours required	8 minimum
Time window	Within 1 year of your race year
Deadline	June 30th
Submit to	forms@crazymountainultra.com
Documentation	Signed form from the governing body

The trail work doesn’t have to be for the Crazy Mountain 100 specifically. Work for another trail race, a local trail project, or any organized trail maintenance counts—as long as you get a signature from whoever ran it.

If your paperwork isn’t submitted by June 30th, you’re pulled from the race. No extensions.

Waitlist & Deferral Policies

Waitlist

The race maintains a gender equity policy. At the time of sellout, they lock in the male/female ratio. If female representation drops below that level (because of cancellations), the next woman on the waitlist gets moved up ahead of the general queue. Otherwise, it’s first-come, first-served.

Active military members pending deployment can hold their waitlist position until 2 weeks before the race.

Refunds

Situation	Refund
Changed your mind	No refund
Military deployment	Full refund minus processing fees
Someone from waitlist takes your spot	50% refund minus fees (request by June 30th)

Deferrals

Pregnancy or child adoption (under age 5) qualifies for a deferral of up to 2 years. Must be arranged 60 days before race day.

Planning Your Path

If you don’t have a qualifier yet, here’s how to think about it:

For 2026 entry (current rules): Any 50-mile trail race with 6,500 feet of gain, finished under 16 hours, completed since July 2024. There are dozens of qualifying races across the country.

For 2027 entry (new rules): You need a 100K with serious vert or a 100-miler. Start planning now—these races fill up too, and you need to finish one in 2025 or 2026.

Don’t forget the trail work. Eight hours is a full day of volunteering. Many organized trail work events run 4-6 hours, so you may need two sessions. Get this done early so it’s not hanging over your head in June.

Qualification details sourced from crazymountainultra.com. Always verify current requirements on the official site before registering.