Join us for the Erie Half and 5k! The Hometown Race Series features half marathons and 5k distance events in outlying communities outside the Denver and Boulder metro areas. LOOK UP! At the Erie event, we often see the early morning skies with dotted with delightfully colorful hot-air balloons. Whatever distance you're ready to tackle, […]

Join us on July 15th, 2023 for the annual Summer Sizzler, featuring the amazing scenery of America the Beautiful Park!  Whether you are looking to run, walk or just enjoy the race SWAG this race is a sure thing for a great time and an incredible experience! This is a fun, family event for all […]

The Annual Cancer League of Colorado Race for Research 5K is excited to be back to the full event you love at Washington Park in Denver! The Race for Research raises money for the Cancer League of Colorado, a non-profit charitable organization that is run entirely by volunteers with no paid staff or offices. The […]

Join us each Tuesday evening in August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races designed to give newer trail runners an opportunity to dip their toes into the trail racing waters, and to offer more experienced trail racers a chance to sharpen […]

Distances: 50k (9 hour cutoff) and 16 mile (7 hour cutoff) and 5 mile (New!)

Welcome to the Staunton Rocks! Marathon & Half Marathon, an event put on by trail runners for trail runners on August 28, 2021. Touring the renowned singletrack of Staunton State Park in Colorado’s Front Range Mountains southwest of Denver, the race will take you back in time as you glide by historic buildings and old milling operations.

Push your limits with these stunning, remote races in the heart of the Rocky Mountains - located just 60 miles outside of Denver! Our Half Marathon and 5K are perfect for athletes of all levels, but will be sure to challenge you as you enjoy the breathtaking mountain views! The Byers Peak Stampede is proudly […]

It's a race.  It's a Brewfest.  It's the Thirsty 13 Half Marathon! Are you thirsty for gorgeous scenery?  You won't find a course more beautiful than this one.  With the majestic La Plata mountains in the background, you'll cruise through the lush pastures of Wildcat Canyon and past the pristine waters of Lake Nighthorse.  This […]

The Vail Recreation District is excited to announce a NEW venue for one of our favorite events in the 2021 Dynafit Vail Trail Running Series - The Dynafit Half Marathon and 5K at Arrowhead in Beaver Creek on August 21st.

The Rio Grande 100 starts and finishes on the banks of the mighty Rio Grande River in beautiful South Fork, Colorado. The race takes you though the amazing La Garita mountains, from arid forest to alpine tundra peaking out over 12,000 foot above sea level 4 times. You will enjoy golden aspen leaf covered trails […]

UPDATE: New Route and New Swag The new route starts at the same location and avoids crossing streets. Check out the new SWAG for this year. The Fifth Annual Impact Uganda Fun Run, an in-person run in Denver on August 17th at 8am, and a virtual run option for those who can't make it (or those who don't want to run […]

The ministries of Selian Lutheran Hospital, Selian Hospice, the Arusha Lutheran Medical Centre (ALMC), The Plaster House and the ALMC School of Nursing touch the bodies, hearts and lives of thousands of people in Tanzania every year. Whether it is fistulae repair (for young women injured in childbirth), treating burns (for toddlers who fall into […]

The Coyote Chase 5k is a 5k race that supports the Monarch HS XC program. The race is on the Monarch HS campus and is a 2k loop that consists of grass, dirt and concrete. The grass portion of the loop is about 65%, dirt around 5% and the rest is concrete sidewalk. The setting […]

3rd annual Smoky Hill Community 5k walk/run fundraiser

Walk Like MADD is MADD's signature fundraising event to help us raise both awareness and funds to end drunk driving and fight drugged driving. With every step taken and each dollar raised, walkers are supporting MADD’s lifesaving mission to keep our families and communities safe.

When: Saturday, August 23, 2025, 8:00 a.m. (Check-in begins at 7:15 a.m.) Where: begins and ends at Saint Peter Lutheran Church, 9300 E. Belleview Ave., Greenwood Village. $40  includes race registration plus T-shirt $15 includes youth (6-17) registration plus T-shirt Children 5 & under are free, but a donation of $15 is suggested if a […]

This Sprint Triathlon is proudly brought to you by the Gunnison Parks & Recreation Department. It begins with a 500yard swim (10 laps) at the Community & Aquatics Center, then continues with a 23K (14.5-mile) bike course, and wraps up with a 6.4K (4-mile) run that finishes at the Community Center. The kid's triathlon starts […]

Highlands Ranch High School (HRHS) is proud to once again host the annual Q-Man Classic. This is a memorial race for Quinton Sanford, a student-athlete with Autism at HRHS who sadly passed away his sophomore year. Proceeds from the race will benefit Teaching the Autism Community Trades (T.A.C.T.). T.A.C.T envisions a world where neuro-diversity is […]

Come join in the celebration of the resurgence of a great community event. The Ram Run will be returning to it's traditional month. This fun and exciting event will include a 5k around the neighborhoods near Green Mountain High School. Proceeds will help benefit the Green Mountain High School Cross Country Team. The first 150 […]

In partnership with the YMCA Pikes Peak Region, we want to bring you the annual Rocky Mountain Run, the Rocky Mountain State Games official 5k! Athletes will be looped around Memorial Park starting at the IAFF Fallen Firefighters Memorial then head through the side streets of Memorial Park, around Prospect Lake, and finish back at […]

Come join us for the Warrior Waterfront 5k. This 5k will be run in conjunction with the Central High School Warrior Cross Country Invitational and all proceeds will go to support the CHS Cross Country Team. We are excited to run along the Las Colonias waterfront park area along with all of the activities available […]

Join us for The Resolute Tap & Cellar 5k on August 23, 2025, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Arvada. Run, walk, jog - whatever goes! Complete the course and celebrate with us and a FREE, local craft brew at the finish line. Start windows will […]

This will be our annual Walk for Life 5K. Our course will begin at the Raynolds/Ash Street bridge in the parking lot across from the Rec District building. The race will run West this year from that point, towards the surgery center & we will have it clearly marked out for walkers vs runners (5K). […]

We’ve put together a non-competitive fun run on some of Boulder’s most beautiful multi-use paths. There’s even an aid station with some Boulder Taco Fest -themed treats. You’ll finish up back at the Boulder Taco Fest, ready to celebrate your run at Boulder’s favorite summer festival

Join us at beautiful Standley Lake in Westminster for an unforgettable evening at the Westminster Night Trail! For its 12th year, this race takes on a whole new energy as runners hit the scenic trails of Standley Lake under the stars. With a mix of packed dirt trails, single-track, and a hint of bike path, this […]