Event details subject to change. Please confirm all information via event website.
Canceled Flying Falcon Downhill Mile
Looking to run the fastest mile you possibly can? Dropping 220 feet, the Flying Falcon Downhill Mile will allow you to run the absolute fastest mile possible. Taking place on the beautiful campus of the US Air Force Academy, the race will start at the top of Academy Dr. near Doolittle Hall and will finish […]
Run Rabbit Run Ultra
The Run Rabbit Run courses are very much like life, in that there are many, many little and not so little ups and downs in between the obvious highs and lows. Be prepared. The 50 mile race starts bright and early at 6 AM at the Steamboat Springs ski area (elevation, 6,900 feet) on Saturday, […]
Severance Glow 5K
Welcome to Severance's Severance Days 5K presented by Severance Middle School the Town of Severance with proceeds benefitting Severance Middle School. Held at the Severance Community Park. Severance Days 5K looks to tie the bow on an amazing weekend for an amazing community. Additional donations will go to Yellow Ribbon, a non-profit, for suicide awareness […]
Break of Dawn Trail Race
Be part of BeyondHome's first trail race at North Table Mountain! This scenic and challenging 8.6-mile race supports BeyondHome in helping families build stable, self-sufficient futures through housing, education, and support services. Be part of something extraordinary at the first-ever trail race in North Table Mountain Park! Every step you take helps BeyondHome empower families […]
Pikes Peak Ascent
The Pikes Peak Marathon, founded in 1956, is the oldest continually held marathon in the United States, taking runners from Manitou Springs, Colorado, to the summit of Pikes Peak at 14,115 feet, and back down for a total of 26.2 grueling mountain miles. It and its sister race, the Pikes Peak Ascent, each climb about […]
Superhero 5K/10K
A beloved community tradition, the Superhero Run invites runners, walkers, and families of all ages to suit up in their favorite superhero costumes and race for a cause. With a 5K, 10K, 1-Mile and a free Kids Fun Run, there’s a race for everyone whether you’re a seasoned runner or just looking for a fun way […]
Marine Memorial 5K
The Marine Memorial 5K benefits the United States Marine Corps Memorial and helps us maintain the flags, lights, and physical aspects of the site. Your help is greatly appreciated to help with this effort. Please consider donating a little extra when you register.
Run the Rockies Half Marathon
The Run the Rockies Road 10k and Half Marathon will feature the traditional Run the Rockies Road Race course with runners starting near Copper Mountain; runners will follow the paved recreation path through the Ten Mile Canyon. The 10k course is 100% downhill and the half marathon course is 75% downhill. This course will showcase […]
All-Out Fallfest
One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest 5K, 10K and half marathon! As the courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with the Flatirons on the horizon will come into view. A course that's not too hilly & […]
Ouray Mountain Trail Run
Thank you for your interest in joining us for this fantastic 13-mile run in the mountains of Ouray. You will be challenged but also enthralled by the incredible views and other charms of our town. The race will start and end at Fellin Park in Ouray, CO, beginning at 7:30 AM. This event is a […]
Wolf Creek Wrangle
Take a step back in time and run or hike where the settlers of the west once walked! These trail runs are hosted by the historic Eaton's Ranch, the country's oldest operating dude ranch located at the base of the Bighorn Mountains. All runners start on the lawn of the ranch, flow through a beautiful […]
Canceled ColorFest Color Run 5K
Brilliant colors will be flying at Pagosa Springs' iconic ColorFest Color Run 5k. As participants venture out on the course, vibrantly hued hot air balloons will be filling the skies along the entire course route from the annual ColorFest Weekend. ColorFest Color Run 5k participants will be transformed into a running rainbow as you run […]
Sunlight Showdown Half Marathon
Sunlight Mountain Resort 10901 County Road 117, Glenwood Springs, CO, United StatesWelcome to the Sunlight Mountain Race Series, where mountain air, winding trails, and a vibrant community come together for an unforgettable summer of running. For seven years, our half marathon has challenged and inspired runners on the stunning trails of Sunlight Mountain. Now, we’re taking it to the next level. Introducing a full race series: […]
Battle by the Brook
The 9th Annual Battle by the Brook Adventure Race will be held on September 19th, 2026 at Camp Shady Brook, in Deckers, CO. This is our favorite fundraiser! With your adventurous nature and philanthropist's heart, registering for this event allows more kids to attend camp at YMCA Camp Shady Brook. Adventures for everyone! Each team […]
Stride for Hope 5K
Did you know September is Childhood Cancer Awareness Month? Join Confluence Run/Walk Club on Saturday, September 19th, 2026 for the Stride for Hope 5K & Kids Fun Run—a high-energy, family-friendly morning dedicated to raising funds and awareness for St. Jude Children’s Research Hospital. Whether you're aiming for a personal record in the 5K, enjoying a […]
Blisters & Brews 5K
Blisters & Brews is a 5k Fundraiser Race on the morning of Saturday, September 14, giving Festival attendees the opportunity to exercise before the Festival. Presented by the Telluride Blues Society, the 5k Race will raise money for the Telluride Adaptive Sports Program in remembrance of dear festival friend Felix Snow. Through registration fees, donations […]
Beulah Challenge
Due to the Aspen Acres Fire, the half marathon had been cancelled in 2026. The Beulah Challenge, which started in 1996, is a 5K, 10K, and half-marathon run near Beulah, a small southern Colorado community located in the spectacular Beulah Valley nestled in the Wet Mountains. Start and finish for all races is at the school, 8734 […]
Miles 4 Madison 5K
Join us in Sterling Ranch for the Miles 4 Madison 5k/1k fun run. Miles 4 Madison is a 5K/1K fun run sponsored by Sterling Ranch Cab. Miles 4 Madison’s goal is to provide educational and recreational opportunities for families with children with special needs. The race is for all capabilities, strollers, and pet friendly! The […]
Gummball 5K
The Gummball 5K will be run in honor of our fallen brother, Deputy Heath Gumm. He paid the ultimate sacrifice on January 24, 2018. Within his five years with the Adams County Sheriff’s Office, it’s clear Deputy Gumm touched the lives of not only his colleagues, but the lives of the citizens he served. Our […]
Champions for Children 5K
Lace up for a race that truly matters. We are thrilled to extend a special invitation to the Colorado running community for the 3rd Annual Champions for Children Charity 5K + Family Fun Run taking place on Saturday, September 19, 2026! This isn’t just another run/walk — it’s a chance to support a local child […]
STAR Foundation 5K
Enjoy warm late-summer sunshine as you run through the welcoming streets of Wellington, Colorado. With wide-open views, small-town charm, and community cheer along the course, this race is perfect for seasoned runners and casual walkers alike. Best of all, your miles make a difference — proceeds support local charities right here in our community. Run […]
Autumn Run Half Marathon
The Autumn Run is held each year on the third weekend in September, in and around the historic, friendly, and picturesque town of Buena Vista, Colorado. Nestled in the upper Arkansas River Valley at the base of the Collegiate Peaks, the Autumn Run has one of the most beautiful courses in Colorado.
Montbello Alive! 5K
Join us for the Montbello Alive 5K, a vibrant community event that brings together runners, walkers, and families for a day of fun, wellness, and celebration. This race is part of the Montbello Alive! celebration, an annual event for our thriving community's culture, spirit, and togetherness. Whether you're an experienced runner aiming for a personal […]
Walk With Autism
Come join us for a fantastic day to celebrate inclusion and community! We welcome all levels of participants and we welcome all people- this is a no sorry zone. This event is our largest fundraiser for the year and we have so much fun!! This year we have two courses- an all inclusive 5K and […]
Lederhosen Run
The Tavern at Red Feather Lakes is planning this year's Oktoberfest on Saturday, September 19th. As a part of the festivities, Caring Hearts of Red Feather Lakes Foundation is putting on our annual Lederhosen Race! The race begins at 1pm. The race starts and ends at The Tavern at Red Feather Lakes and is 3.6 […]
Fall Equinox Half Marathon
Held on the Autumnal Equinox during the height of fall color, the Equinox Marathon, Half Marathon and 5-miles races are all point-to-point, net downhill, scenic courses along the Cache La Poudre River in Fort Collins. This year, the event will take place on September 18th.
Pikes Peak Marathon
The Pikes Peak Marathon, founded in 1956, is the oldest continually held marathon in the United States, taking runners from Manitou Springs, Colorado, to the summit of Pikes Peak at 14,115 feet, and back down for a total of 26.2 grueling mountain miles. It and its sister race, the Pikes Peak Ascent, each climb about […]
Oktoberfest Triathlon
The annual Oktoberfest Triathlon on Saturday September 24th, 2022, is the party of the season and also a 2022 Mountain Collegiate Conference Race! As the leaves change color this race will officially end the Colorado Triathlon Season! It's been a long fun season but before the snow begins to fall let's get one more triathlon […]
Second Wind Fund 5K
Youth across Colorado are facing growing mental health challenges, and more than ever, they’re reaching out for support. Second Wind Fund is here to answer that call, connecting youth at risk for suicide with timely, life-saving therapy that removes financial and social barriers to care. As the need continues to rise, so does our impact […]
Golden Gallop 5K/10K
“Howdy Folks! Welcome to Golden, where the west RUNS!” Starting beneath the City’s famous ‘Welcome’ arch, right in the center of historic downtown Golden, and finishing in Parfet Park beside gushing Clear Creek, the Golden Gallop will lead its runners on 5k and 10k loops. The Golden Gallop is the annual fundraiser for the Golden […]
Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.