2027 Registration Open
Events
50 Mile (Individual)
50 Mile (Relay)
100 Mile (Individual)
100 Mile (Relay)
The NOCO Urban Ultra & Relay
Experience Northern Colorado's Poudre River Trail!
Take on an unforgettable 50-mile or 100-mile urban ultramarathon along the scenic, paved Poudre River Trail, traveling through Fort Collins, Timnath, Windsor, and Greeley.
Designed for runners of all experience levels, the NOCO Urban Ultra also welcomes adaptive athletes, wheelchair athletes, and athletes with disabilities seeking an inclusive endurance racing experience in Colorado.
Enjoy a supported course with well-stocked aid stations, convenient crew access at exchange points, and beautiful Northern Colorado scenery.
Celebrate your accomplishment at Island Grove in Greeley with finisher medals, belt buckles for 50-mile and 100-mile solo ultrarunners, finish-line food, and awards for top finishers.
Race Distances | Sunday, April 11
50-Mile Solo or Relay
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Complete the full 50 miles solo or with a relay team of 2–4 runners.
100-Mile Solo or Relay
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A unique hybrid ultra challenge combining 50 miles on race day with 50 miles completed independently.
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Relay teams of 2–8 runners welcome.
Whether you're chasing a new ultra distance, tackling your first endurance race, or searching for an adaptive-friendly ultramarathon in Colorado, your next adventure starts here!
The Races
50 Mile Solo and Relay
The 50 mile race is point-to-point run. Starting in Bellvue, runners will travel from Bellvue, through Fort Collins, Timnath and Windsor to complete their journey in Greeley.
50 Mile Relay Teams: Teams of Two to Four, completing 12 Legs, ranging from 3 - 7 miles for each Leg.
100 Mile Solo and Relay
The 100 mile race is a unique blend of an in person and virtual event:
Participants will run 50 miles on Sunday, with the 50 Mile distance race, and complete the other 50 miles on their own between April 4th and 18th.
The "virtual" miles can be completed on the Poudre Trail or any other location of your choosing, with results being submitted through the race website. These miles can be done all at once or divided into multiple runs within the given time frame. Once both the in person (race day) and "on-your-own" miles have been completed, you'll receive your 100 Mile belt buckle in the mail.
Relay Teams: Teams of Two to Eight
The NOCO Urban Ultra welcomes athletes of all abilities and experience levels, including adaptive athletes, wheelchair athletes, and athletes with disabilities looking for an inclusive ultramarathon experience.
Whether you're an experienced ultrarunner, a first-time ultra participant, or an adaptive endurance athlete seeking a new challenge, our urban ultra offers a unique opportunity to push your limits on Northern Colorado's scenic paved trail system with less than three miles on soft surface non-technical dirt trails. We believe endurance sports are for everyone, and we're committed to making our race welcoming and accessible to all athletes.
If you have any specific questions or requests to make sure your experience with us better, please email Race Director Mandy:
mandy@runwindsorco.com
Course Maps + Details
Course Guides + Handbook
The Course Route Guides have it all! Detailing each leg's distance, elevation gain, start/end point and a link to the Strava segment so you can start training!
When it comes to ultra races, relay or solo, we know you have a lot of very important questions! We have answers:
Relay Structure:
Teams will complete the course using a single vehicle for transportation between exchange points. While one runner is on the course, the rest of the team will travel ahead to the next exchange location.
All exchanges are located at trailheads and are accessible by car, making transitions smooth and easy to navigate.
Teams have full flexibility in how they divide their legs. Runners can complete one leg at a time or take on multiple consecutive legs—it’s entirely up to your team’s strategy.
When not running, teammates will act as the support crew from the team vehicle, helping keep runners fueled, hydrated, and ready for their next leg.
Check out the handbook for more information!
Post Race Festivities
Enjoy food, drinks and fun activities on site once your epic race is over
Every Athlete Receives:
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Belt Buckles for solo 50 and 100 mile runners
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Athlete Shirt
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Finisher Medals for All Participants
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Custom Race Bib
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Free Race Photos
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Aid Stations
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Complete GPS & Downloadable Maps
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Post Race snacks and drinks
Interested in sponsoring?
Email: mandy@runwindsorco.com
Run the Poudre River Trail!
Photo Credit: John Robson Photography
We're Here to Help!
We want every athlete to feel welcome, supported, and confident on race day! Whether you have medical considerations, accessibility needs, require special accommodations, or have questions about participating, we'd love to hear from you. Reach out so we can work together to make your race experience as safe, comfortable, and enjoyable as possible!
run.Windsor Race Series, powered by miles.Beyond Running Company, is a female- and minority-owned endurance event company dedicated to building healthier, stronger, and more connected communities through running. From family-friendly 5Ks and kids' fun runs to marathons, ultramarathons, and epic relay adventures, our events welcome athletes of all ages and abilities. Rooted in Northern Colorado, we're passionate about celebrating the people, businesses, and organizations that make our communities thrive—creating meaningful experiences that go beyond the finish line.
Beneficiary
Your race entries and donations help us create a stronger community! This year your support goes to these local nonprofits: WOW, Windsor Community Foundation, Health4Heroes, Arty's Kitchen, Beef Sticks 4 Backpacks, Severance Middle School, Banner Health MD Andersen, Weld RE-4 Foundation, St. Judes Children's Hospital and Adopt A Family.
Sponsors List
All Levels Sponsors
