run.Windsor, Stronger Together
Join the run.Colorado Running Company: run.Windsor Race Series and run.Colorado Relays.
Our race series creates community through running, while celebrating the businesses, organizations and people that make Northern Colorado great!
LOCAL RACES
Professionally timed endurance events including 5k, 10k, Half Marathon, Full Marathon and Ultra Marathon.
COMMUNITY
Join the run.Colorado Running Company for our Run Club, free group runs, seminars and events connecting the Northern Colorado community and local businesses, organizations and nonprofits. Learn more about our story.
RELAY RACES
The Wild West Relay and Flaming Foliage Relays cover the most beautiful parts of Colorado, completed as a team. These adventures are an experience you'll never forget!
GIVING BACK
All events give a portion of proceeds back to local nonprofits through Windsor Gives, including Adopt-A-Family, iHeart Humanity, Imagine Zero, Realities For Children and more.
run.Windsor Race Series
2025 Gift Cards
Purchase a gift card for the runner in your life! It can be used for any of our races in 2025.
run.Wild Movie Premier
We are endlessly wild, endlessly chasing, endlessly growing! Step after step, how far would you go? On behalf of run.Colorado, Story Path Creative, run.Windsor, and Loco Experience, watch with us as we achieve the unimaginable. We hope to see you for a night filled with entertainment as we share the exciting 200 mile journey from Ft. Collins to Steamboat Springs over our Wild West Relay. Run towards the new horizon!
Join us at The Lyric on Friday, Jan 24, 2025 at 6:00 PM for a special screening of our new film. You won't want to miss your chance to be among the first to see this epic adventure unfold on the big screen. Grab your popcorn and get ready to run.Wild with us!
Doors open at 5:00pm for drinks and mingling.
The screening will start at 6:00pm, followed by a Q&A with the producers, solo runner Stephen Castle, the race director, and more. Get your tickets
Join the Challenge - FREE!
Move Through The Darkness
A virtual wellness challenge to combat the negative impacts of a lack of movement in winter months. Pledge to run, walk or workout for a specific number of miles or hours through the winter and get a finisher hat or shirt, weekly zoom calls with motivational speakers and professionals on the topics of running, mental health, nutrition and more!
Free Fun Runs
Join us on the 1st and 3rd Thursday of every month at Peculier for a group fun run!
In January, we'll meet on the 2nd, 16th and 30th.
LUCKY BREW RACE
- Date: Sunday March 16, 2025
- Time: 9:00 AM
- Location: Eastman Park
- 5K - 10K - 15K - Kids Fun Run
Run or walk on the beautiful Poudre River Trail to earn your lucky socks, free beer/seltzer provided by Peculier Ales, Brewery, finisher medal, after party and more! This race benefits Women Optimizing Women (WOW)...providing education, resources, and support to help improve their lives and the lives around them. Inspire. Empower. Advocate.
Great Western Trail Race
- Date: April 19, 2025
- Time: 8:00 AM
- Location: Severance Community Park
- 5K - 10K - Half Marathon
Run or walk as we celebrate the opening of Northern Colorado's newest trail, connecting Windsor, Severance and Eaton!
Choose a 5k, 10k or Half Marathon - with the inaugural Great Western Trail Race finisher shirt, live music and custom locally made prizes for top finishers.
WELD YOUR METTLE ULTRA
- Date: May 24-25, 2025
- Time: Varies by distance
- Location: Eaton, CO
- 7k Run or Ruck,
- 3, 6, 9, 12 or 24 Hour 4 Mile Loop Races
- Solo or Relay
Run or ruck a 7k, or a 4 Mile loop course as an individual or a relay team, while enjoying Sauna and Cold Plunges. This rugged event will be held on a groomed dirt course in Eaton, CO on private land where camping is available, as well as food 24/7 in a heated barn, food trucks, coffee, live music and more. Belt Buckles for 100 Mile Finishers
Participants will receive a quality technical shirt, finisher medal, chip timing and a custom WYM Bib/Medal holder, that you'll brand with your name once you finish your distance - because you've Welded Your Mettle!
RED, WHITE AND BREW RACE
- Date: June 21, 2025
- Time: 7:00 am
- Location: Raindance National Golf Course - Grainhouse
- 5k, 10k, Half Marathon,
- 12 Hour Last Man Standing
- & Kids Fun Run
Walk, run or ruck, a 5k, 10k, Half Marathon or 12 Hour Last Man Standing Race to celebrate the Red, White and Brew in Windsor, CO!
Sauna, Cold Plunges, Live music, food, drinks, bouncy houses, face painting and more! Finishers will receive this year's RWB Boco Performance Hat and a chance at top finisher prizes.
Greeley Freedom 5k
It's Back!
- Date: July 4, 2025
- Time: 7:00 am
- Location: Downtown Greeley, Colorado
Run or walk the traditional Greeley 5k, along the Greeley Stampede Fourth of July Parade Route, before the parade begins on July 4th, 2024
Proceeds benefit Beef Sticks for Backbacks
Wild West Relay
21st Annual Wild West Relay
Friday August 1 through Saturday August 2, 2025.
The Wild West Relay covers 200 scenic miles, with 36 legs, beginning in the foothills of beautiful Fort Collins before sending runners deep into the heart of the Rocky Mountains, over two mountain passes and finishing in Steamboat Springs, CO.
This life changing relay road race is a team-oriented adventure with experiences and views you'll never forget. Each team consists of either twelve runners and two vehicles (the vast majority of the teams) or six runners and one vehicle (Ultra teams), or an odd amount of runners of any other quantity.
NOCO Urban Ultra
Join us for the inaugural running of this event!
Friday August 22 through Saturday August 23, 2025
A collaboration event between run.Windsor and Breakaway Athletic Events celebrating the Poudre River Trail. Choose between 50 or 100 mile solo or relay options as you enjoy scenic views and local amenities through Fort Collins, Timnath, Windsor and Greeley. A stellar post race party awaits all finishers in Greeley. You won't want to miss this celebration of the newly completed Poudre River Trail.
Severance Days 5k
- Date: August 23, 2025
- Time: 8:00 AM
- Location: Severance Community Park
Welcome to Severance's 3rd Annual Severance Days 5K run/walk and Kids Fun Run.
Severance Days 5K looks to tie the bow on an amazing weekend for an amazing community. The race is professionally timed with chipped race bib and a finisher hat or Goodr sunglasses!
Flaming Foliage Relay
11th Annual Flaming Foliage Relay
Friday September 5, 2025 - Saturday September 6, 2025
Flaming Foliage is a 165 mile overnight team relay race adventure with single track trails, from Idaho Springs to beautiful Buena Vista, over Guanella, Georgia & Fremont Passes. Covering 165 miles, this life changing relay road race is an adventure with experiences and views you'll never forget.
Each team consists of either ten runners, an Ultra team of 4-5, or a Super Ultra team of 1-3
Windsor Marathon
- Date: October 5, 2025
- Time: 7 am and later
- Location: The Island at Pelican Lakes in Water Valley
Full Marathon, Half Marathon, 10K and 5K & Kids 1 Mile Run
Welcome to the 4th annual Windsor Marathon Event, held by run.Windsor
Starting and ending at The Island at Pelican Lakes in Water Valley, with a great after party including breakfast, drinks, music, kids zone and more!
There's a distance for everyone with a kids fun run, 5k, 10k, half and full marathon.
Turkey Trot
- Date: November 27, 2025
- Time: 9 am
- Location: Pelican Lakes Golf Course
The annual Pelican Lakes Turkey Trot is back, brought to you by run.Windsor!
Run or Walk this family friendly 5K, benefitting Athletes In Tandem and the Weld Food Bank. Finish your race off with a free beer and mimosas donated by High Country Beverage
Santa Catch Race
- Date: December 13, 2025
- Time: 9 am
- Location: NOCO Sports Center, Windsor, CO
5k - 10k Run/Walk, 1 Mile Kids Fun Run
It’s time to Catch Santa, as we support Adopt-A-Family through Serve 6.8. This fun 5k, 10k and 1 mile kids fun run is sure to put you in the holiday spirit, as we rock out to holiday jingles, sip both boozy and kid friendly hot cocoa, with a finisher medal, beanie or hoodie for all!
Join the run.Windsor RUN GROUP
Receive a 20% discount on run.Windsor Events, training shirt, perks from our run group partners, exclusive invites to group runs + motivational speaking events and more!
ABOUT US
The run.Colorado Running Company:
run.Windsor is locally owned and operated by Colorado native Mandy Mullen. Along with her family and team, her mission is to positively impact the health of Northern Colorado through her passion for running. Through races ranging in distance from 5k to ultramarathon to kids fun runs, run.Windsor’s endurance events celebrate the people, businesses and organizations who make Windsor great. They aspire to better our community’s overall mental, emotional and physical wellness through movement. Click here to hear our story.
run.Windsor supports the economic health of Windsor through their active role as a member of the Windsor Area Chamber of commerce, collaborative efforts with local businesses and championing other entrepreneurs. A portion of proceeds from every event are also donated to local nonprofits.
run.Colorado Relays takes your running adventure to the next level, with the only two cross state point-to-point relay races in Colorado. The Wild West Relay and Flaming Foliage Relay are adventures of a lifetime and so much more than just running!
Click here to hear our story
I love all of the events
I love all of the events from Run.Windsor! They are so fun and well organized. All of the people involved are encouraging. I feel so blessed to have something like this in my small(ish) hometown. Keep up the great work!
Jen C.
Makes Running Fun
Since I moved from Texas, I have struggled with finding a workout ‘family’. I am the type of person who needs the motivation to keep moving, provide accountability, and make running fun. Mandy has created a great network of people who come from all backgrounds, athletic differences, and has a plan for every body.
Kimberly H.
Highlight of My Time
Run.Windsor has been a highlight of my time in Windsor! Their tagline, Stronger Together, is so true! They share their struggles and their triumphs, and truly support and encourage each other! I am blessed to know these women!
Lisa U.
Experience a variety of terrain, from paved trails to dirt paths in Windsor's open spaces.
Come Run With US!
