Sat May 27, 2023 Windsor, CO 80550 US Directions


Congratulations to our 2023 Finishers!

View all race results here


Grab your free race photos here! Tag @runwindsorco when sharing on social media


Run, Walk, Ruck or choose a Relay Team:

50K (33 Miles),  Heavy Marathon (27 Miles), Heavy Half Marathon (15 Miles), and 7k (4 Miles) run or ruck, brought to you by the run.Windsor Race Series. Held on the Poudre River Trail. Connecting Windsor to Greeley, this race will strengthen your resiliency when faced with adversity and challenges.

All distances are "heavy", meaning longer than traditional distances, in honor of our ability to go a little further and show how we Weld Our Mettle. Proceeds benefit the local nonprofits Windsor Gives and nonprofit Health4Heroes, providing a supportive community, connection, and encouragement, paired with direct, affordable access to local health & wellness services for veterans, first responders, and their families.

Entry into this race is more than a one day event. It's an invitation to change your life, challenge your excuses, dig deep and WELD YOUR METTLE. 

Participants will receive a quality technical shirt, finisher medal, chip timing and special early release of Peculier Ales' "Weld Your Mettle IPA" - brewed just for this event!

Race Day Timeline
Late Packet Pickup: 1 hour to 30 Minutes before each start time, at the Kodak Trailhead

5:40 am 50K Shuttle Van Load Up at Kodak Trailhead courtesy of McDonald Toyota

6 am 50K Start 

7 am Marathon Start

8 am Half Marathon Start

9:30 am 7K Start (run, walk and ruck)

11 am Kids Fun Run 

11:30 Awards Begin


Experience Weld Your Mettle!

WYM Shirts

Register by May 16th to ensure you get this year's custom finisher shirt! 

Windsor Gives

A portion of proceeds will go to Windsor Gives, 501(c)3 non-profit to support Health4Heroes, a 501(c) 3 non-profit, to promote and support healthy living for veterans   and first responders.





Brought to you by

Who We Are

The run.Windsor Race Series is locally owned and operated by Colorado natives and active duty military family Nick and Mandy Mullen. Our event organization brings quality endurance events to Northern Colorado. We’re passionate about providing unique experiences that celebrate running and the people, businesses and organizations that make our community great. All races donate proceeds to a local cause we’re passionate about. Learn more about our races, running program and training studio at  Check out all the upcoming races in the 2023 run.Windsor Race Series.

Lucky Brew 15,10, and 5K March 11, 2023

Red, White and Brew June 24, 2023

Wiesn Mile & 5K September 23, 2023

Windsor Marathon October 8, 2023 

Turkey Trot November 23, 2023

Santa Catch Race December 16, 2023 


Kodak Trailhead off Hwy 257
30927 CO-257
Windsor, CO US 80550

Race Contact Info

If you have any questions about this race, click the button below.


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