This exciting half marathon course is a fun loop on the beautiful flowy single track in Fruita CO. With short steep climbs and descents featuring beautiful views of the nearby buttes and mesas runners will enjoy 13.8 miles of gorgeous open early season desert. This race is part of the Adventure Fest at 18 Road […]

The Denver Mother's Day 5K – It's What Colorado Moms Do! This year, all-you-can-eat pancakes and three sausage breakfasts with OJ or coffee will be provided by Flippin' Flapjacks for all registered participants. The Denver Mother's Day 5K is excited to announce LIVE music this year! Aspire Healthy Energy Drinks is bringing their Aspiring Artists Micro Music Festival to […]

The Frank Shorter Track Classic is a track meet honoring one of America's greatest distance athletes. Each year, we will celebrate Frank's career, his devotion to the sport of running and promotion of health and fitness, while also acknowledging a different Boulder Olympian. This year's meet will take place on May 21st at Nevin Platt Middle School in Boulder.

A new Race Series for Colorado with 2 races over the Weekend for both WOMEN/Moms and their families!....Saturday, MAY 10th, 5k & Family 1 mile in Denver at GREAT LAWN PARK, then on Sunday in LOUISVILLE- COMMUNITY PARK for the 5k, 10k and Family Mile Trail Races. Take your choice. DENVER- Expo opens at 8:30am, […]

The Dash & Dine 5k run, Boulder’s favorite spring tune-up run series is back for 4 races in May at the beautiful Boulder Reservoir in Boulder, CO.

Come and GO RUN or walk our new cross country trail on campus.

The Black Canyon Ascent 6-mile Run and Challenge Walk features a tough, scenic course starting at an elevation of 6500' and climbing almost 2,000' to the rim of the Black Canyon National Park. First run in 1977! For over 40 years, beautiful vistas and scenic surroundings have inspired people to challenge themselves and the competition in […]

Colorado Veterans Project is set to host the eighth annual Memorial Day Run & March, which will raise funds and collect non-perishable food donations for local veterans experiencing homelessness. Athletes may participate in a 5K, 10K or 30K run, or choose to ruck march, where each athlete will carry a 25-pound rucksack filled with non-perishable […]

Samson was the celebrity elk of the Rockies until he was illegally poached in 1995 on YMCA grounds. Our race runs on Samson's home turf, The YMCA of the Rockies, which his descendants still call home. The course is fast single track with a big King of the Mountain challenge slapped in the middle. This […]

Special Forces Foundation is proud to announce the Annual Memorial Day Run & March. Be a part of the LARGEST food donation event in Colorado! The Memorial Day Run & March invites civilians, Veterans, and uniformed Military to challenge themselves in friendly competition while helping feed homeless Veterans. We have three category events to choose from […]

The 5k will start at red leg brewery and will be a single loop. This will not have time chips but we will have a timer at the start. The race is benefiting the Air Academy Football team for a planned game in Durango, CO.

The Vallecito Lake Heavy Half Marathon is a beautiful and scenic course around Vallecito Lake. Nestled in the heart of the San Juan Mountains in Colorado, our race course takes runners completely around the picturesque Vallecito Reservoir with a special section that runs right across Vallecito Dam. If you ever wanted to run all the […]

The Boneyard Boogie kicks off the 2025 Vail Trail Running Series with a 14K or 6K scamper through pinyon groves and juniper shrubs on some of Eagle's most scenic single track trails, with an elevation gain of 1,279 feet, reaching a maximum elevation of 7,718 feet. Both races will start and end at the Eagle […]

The Spirit Challenge Run for Autism offers three different distances, a 10k, 5k and Kid’s Fun Run. All races are on paved roads, except for the 5k which has a short section on trail. The Kid’s Fun Run is an 800m run consisting of 2 laps around the Steamboat Springs Middle School track. The Spirit […]

Walk MS 2024 includes a powerful new experience where you’ll witness how your support changes the lives of people with MS and gets us closer to our ultimate goal: a cure. Whether you live with MS, love someone who does, or are a part of the wider community, you can proudly display your role in […]

Grab your family and friends (don't forget Fido!), your running (or walking) shoes, and join us as we raise funds for FOCP- Friends of Charlie's Place (the Clear Creek and Gilpin County Animal Shelter) and CCMRD Youth Programs. This fun and fast course travels both paved and dirt trails along scenic Clear Creek. Shelter dogs […]

Join us for the Stem Ciders at Acreage 5k on May 17, 2025, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Lafayette. Run, walk, jog - whatever goes! Complete the course and celebrate with us and a FREE, local craft cider or beer at the finish line. Start […]

Join DuMyon Martial Arts and The Farm Sports for our fun and family-friendly Cupcake 5k Run, Walk, and Roll. This fund raising event supports adaptive learning opportunities for members of our community. Be sure to visit our vendor tables and engage with the community Event t-shirt included with your registration This is a can't-miss event! […]

Join us on Saturday, May 17 or Sunday, May 18, 2025 for Run to the Shrine, Cheyenne Mountain Zoo’s annual fundraiser run/walk. This 4-mile casual run/walk winds through the Zoo and up to Will Rogers Shrine of the Sun, with leopards, lions and elephants along the way. Enjoy stunning views of Colorado Springs below while ascending […]