Colleen De Reuck XC Classic

Harlow Platts Community Park 1360 Gillaspie Drive, Boulder, CO, United States

The Colleen De Reuck Cross Country Classic is a XC meet honoring one of the world's greatest ever distance athletes and Boulder local, Colleen De Reuck. Every year we will celebrate Colleen’s career, her devotion to the sport of running, and promotion of health and fitness, while also acknowledging a different Boulder Olympian every year.

City Park 5K

City Park - Denver 1700 N York St, Denver, CO, United States

Get ready for the winter season while enjoying a race with your friends at the City Park 5k! Participants in both distances will receive a long-sleeved event t shirt. 5k finishers earn a MEDAL! November is Worldwide Pancreatic Cancer Awareness month - let's kick off the month by running for a cause! Consider adding a […]

Trails 5K

Piney Creek Hollow Park 6410 S Tower Rd, Aurora, CO, United States

Our mission is to bring awareness and support the struggles of mental health of youth, teens, adults and families in our community.  Many battles are related to mental health including bullying, depression, anxiety, addiction, identity, inclusion, trauma, abuse. Trails and Arapahoe Park & Recreation District are partnering with Aurora Youth Options, Aurora Mental Health & […]

Turkey Trails 5K/10K

Cottonwood Creek Park 3920 Dublin Blvd, Colorado Springs, CO, United States

Join us for the annual Turkey Trails 5k/10k!  A fun, Thanksgiving-themed event that is perfect for the whole family. The fun includes - Great Swag - designer shirt & custom medal Chip-timing with live results and awards Free photos Delicious Treats waiting at the finish line Plenty of fun! Grab your friends and family, you […]

Sole Mates 5K

Shoes and Brews 63 S. Pratt Parkway, Unit B, Longmont, CO, United States

Shoes & Brews along with our "Sole Mates" Left Hand Brewing and Hoka present the 9th edition of our fall race series.  With a focus on community, running, beer and high fives we put this event on as a celebration.  A little backstory on our friends and Sole Mates - Left Hand Brewing ..... When Shoes […]

Girls on the Run 5K

America the Beautiful Park Cimino Dr, Colorado Springs, CO, United States

Each season comes to an end with a joyful and fun non-competitive 5K (3.1 miles). This culmination gives girls a tangible sense of accomplishment and the confidence to be the author of her story. So grab your cheer gear, noisemakers and spirit fingers and join us for this celebratory event!

Rim Rock Marathon

Colorado National Monument 2328 Monument Road, Grand Junction, CO, United States

Join the Grand Junction Sports Commission for a monumental run on Sunday, November 5th, 2023! Rim Rock is the only marathon and half marathon that runs through the Colorado National Monument in beautiful Fruita, Colorado. The race course gives runners amazing views of the Grand Valley and finishes at the Fruita Community Center.

Feet for Justice 5K/10K

City Park - Denver 1700 N York St, Denver, CO, United States

Join us for the Feet for Justice Run IN-PERSON this November! The Feet for Justice Run is a family-friendly event in Denver that brings together the community members, businesses, and non-profits to take a stand against human trafficking. Choose between the 10K or 5K in the beautiful City Park. 100% of your registration fee goes […]

RMRR Prairie Gateway Park 15K/5K

Prairie Gateway Park Prairie Parkway, Commerce City, CO, United States

Everyone – slow, fast, or in-between –  can win  at RMRR Trophy Series races.  With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great goal to shoot for whatever your speed.  Just show up an hour before the start and we’ll get you ready for your race.  It’s an […]

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.