2021 Colorado & Wyoming Mountain Bike Race Calendar

People are always complaining there’s not a comprehensive list of XC/endurance mountain bike races in Colorado and Wyoming… with so many promoters, it definitely can be hard and a lot of lists out there miss out on several big races and series (or ignore the awesomeness that is Wyoming mountain bike racing).  So I’m determined to try to solve that!


If you know of an event I have missed, please comment below with details/website.  This list is specifically for mountain bike events, please see my gravel calendar if the event is more that style.  Thanks!

Awaiting dates for… Leadville Big Friggin Loop, Ring the Peak, Banana Belt,  rumors of a Lory State Park series

Laramie Mountain Bike Series is officially dead 😦
12 Hours of Penitence is not happening in 2021
No NBB short track in Spring 2021

(I pulled all these dates off of the official event websites. So any incorrect dates falls back on those websites, I merely just repeat the information. Please check official websites for any changes/cancellations – I will try to note when possible.  Also several races on this list are lottery-entry, or sell out pretty darn quickly!)
Last updated 8/11/2021

2021 Dates

January 2021

February 2021

March 2021

April 2021

May 2021

June 2021

July 2021

August 2021

September 2021

October 2021

94 thoughts on “2021 Colorado & Wyoming Mountain Bike Race Calendar”

    1. Thank you! I have it added. This definitely would fill an empty spot in July… but I must admit, I’d hesitant to register for anymore races due to the current state of events involving the pandemic and canceled events!


  1. Hi Heidi my name is Rafael, I host the Salida Big Friggin’ Loop in the Colorado Endurance Series and is to be held on Saturday June 12th for 2021. The COES page is now updated.
    Also new in the series for 2021: Leadville Big Friggin’ Loop! (LBFL) -Coming this September-
    Thanks for helping spread the good word about all of these fun events!


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