Sat May 28, 2022 Windsor, CO 80550 US Directions

Heavy 50K

$160 $150 6:00AM MDT Price increases after May 25, 2022 at 11:59pm MDT

Heavy Marathon

$140 $130 7:00AM MDT Price increases after May 25, 2022 at 11:59pm MDT

7k Ruck

$55 $45 7:15AM MDT Price increases after May 25, 2022 at 11:59pm MDT

7k Run or Walk

$55 $45 7:15AM MDT Price increases after May 25, 2022 at 11:59pm MDT

Free Kids Fun Run

$0 8:30AM MDT - 8:45AM MDT Registration ends May 28, 2022 at 11:59pm MDT

Welcome to Weld County's first ultra marathon and 7k run, walk 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.

We'll also offer a full marathon, and 7k Run, Walk or Ruck (4.35 miles) - in honor of Mental Health Awareness Month and the 70 suicides in Weld County in 2019. Proceeds benefit the local 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!


Course Details

The Heavy Marathon and Heavy 50k are the first professionally timed, organized Ultra Marathons to take place in Weld County. The 7k distance includes a walk/run and ruck with 35lb pack (not provided). All routes are out and back, with a finish at the Kodak Trailhead in Windsor. 

The ultra routes both travel through Windsor, to Island Grove in Greeley, and back to Windsor via the paved Poudre River Trail. This trail offers beautiful scenery through secluded fields, open spaces and along the river. There are some areas where soft-surface on the side of the trail is available. 

Routes can be found here:

7k (4.3 miles)

Heavy 50k (33 miles)

Heavy Marathon (28 miles)

Free Kids Fun Run 

A one mile out and back on the Poudre River Trail - just for fun!


A portion of proceeds go directly to Health4Heroes, a local nonprofit:

There's a beer for that!

Race participants have special access to the early release of the Weld Your Mettle IPA, brewed by Peculier Ales, at Packet Pickup on May 26th! A portion of proceeds from the quarterly brewed run.Windsor beer will go to a nonprofit to be announced soon. The beer will be released to the public on May 27th. Thank you to our friends at Peculier for supporting our mission of creating a healthier and happier community through running - and of course good beer!

How do you Weld Your Mettle?

Hear how our sponsors Weld Their Mettle - what they do to to support their strength, resiliency and ability to dig deep and "do hard things" 

Visiting Windsor

Whether you're coming from near or far, check out our "visitor guide" and links to local resources for information on the amazing events, places to eat/drink and explore nature in beautiful Windsor, Colorado!

Click Here

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 

Packet Pickup and Late Registration

Packet Pickup

Thursday, May 26th - A special Early Beer Release Party and live band for the Weld Your Mettle IPA at Peculier Ales will take place on Thursday, along with packet pickup. Only race participants will be able to taste and purchase the Weld Your Mettle IPA on this day! Packet pickup and late registration will be available all day from noon - 8 pm. 

Friday, May 27th - Packet pickup and late registration available all day from noon - 8 pm. The Weld Your Mettle IPA will be released to the public on this day. 

Race Day - Late pickup will be available on race day beginning at 5 am at the Kodak Trailhead 

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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