If you were planning to run a different mountain 100 mile in 2021 and it is cancelled, reach out for a 10% discount.

Update 7/7: Given the tenuous nature of international travel currently, if you are planning to run a UTMB race and either decide or are no longer able to go, please reach out any time until race week and we will do our best to accommodate as the dates are very close and I personally know many people near to our race currently planning to travel out there.

Given the nature of the event, we require previous appropriate mountain ultra experience. Runners must have completed a mountain 100 mile or 100km race in 2019 or 2020, or email the race director personally for approval into the event (argue your mountain experience in lieu of race results). If you chose to do the latter option, you must email the race director prior to entering the race, or else risk being denied entry and forfeiting your entry fee. Due to the COVID-19 pandemic, we are not implementing a formal list for 2021, but plan to for 2022. If you are eyeing this race, you know what a mountain race looks like. If you have concerns your qualifying race, may not count, please email the race director before signing up for clarification.

We also require 8 hours of either trail work or race volunteering to be completed. Due to 2020 being what it was, we will approve work performed in 2019, 2020, or 2021. Do your best and just be honest about it. Alternatively, send perform 8 hours of volunteering around your community and send us some form of proof. If you are unable or unwilling to complete your volunteer work you may pay an opt-out fee of $125 that will be donated in equal sums to the Colorado Trail Foundation and Continental Divide Trail Coalition (minus 5% for the USFS). You will find this option under the "store" on the race's Ultrasignup page.

Entry can be found at


$300 until June 1**
$350 June 1 until registration closes

**This is being discounted this year to encourage entry given our later status and the uncertainty of finish line activities, etc.

What you get:
• A stellar, high alpine adventure
• Food at the finish line
• A unique finisher's buckle and award
• Special overall awards for both men and women

So that you won't be surprised, expect a minimal "swag bag" at check in. Signing up is not the achievement, finishing is. You will, I hope, be more than pleased once you cross that finish line.

Cancellation Policy

Refunds will only be provided to those whose spot is taken from the wait list, if applicable. Otherwise, all entries are non-refundable and non-transferable. Further, if we are unable to hold the race due to any outside force (extreme weather, government shutdown, fire, pandemic, etc.) we will again be unable to provide refunds. We are a small race, have small margins and have committed expenses well before race day.

Feel free to reach out to the race director, Guy Love, at with any questions or if you would like to volunteer!