Spring is the season of renewal and running. We hope you join us for a fun adventure that embodies the spirit of springtime at the beautiful Boyd Lake State Park! Choose from the Half Marathon (13.1 mile) or 10K (6.2 mile) for your run adventure. This course is on smooth paved walkways with about three quarters of a mile […]

Join us for the Left Hand Half Marathon and 5k on Sunday, April 21, 2024. The course starts and ends at this awesome Longmont, Colorado brewery. The out-and-back course features a run that mostly follows the St. Vrain Greenway. There is also a 5k fun run option. Start Times: The Half Marathon will have start times […]

The Blue Heron Half Marathon and 5K courses are flat and fast, along the S Platte River. Along the way you will enjoy wildlife, placid waters, and scenic views. Join the Rocky Mountain Road Runners on April 24th at the Adams County Regional Park in Brighton.

Ready to gallop around Denver with some friends? Yeah, you are! Come frolic with us at the Unicorn Runner 5k at Great Lawn Park to kick off your spring running season! You'll earn a sweet tee shirt and a flashy unicorn finisher medal! It's a 5k distance for all, and whether you walk, trot, canter […]

The Flying Pig 5K is a fundraiser to benefit families in the Family Support Services Program (FSSP). FSSP provides funds designated to assist families who provide support at home to their family member with an intellectual/developmental disability or delay. The dollars raised by this event will be used to offer services to families in the […]

We are pleased to offer 3 x Spring track meets, for middle distance and distance runners, that will be conducted similarly to the BMC (British Milers Club) meets. All meets will be held at Niwot High School (8989 Niwot Rd, Niwot, CO 80503). ADDITIONAL NOTES There are NO age restrictions for the 800m, 1500m and […]

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.

This year's in-person Falcon 50 will be opened up to all DoD ID Cardholders but is subject to change should a base closure occur. Welcome to the annual Falcon 50 Race Series. This event has 5 race distances/options: the Half-Marathon, Military Half-Heavy, Marathon, Military Heavy, and 50 Miler. Join us and help continue the legacy […]

Who can turn down a morning in Garden of the Gods? We'll close the park to traffic, so runners can enjoy their race, traffic free! Choose between a 5k or 5 Mile course through the Garden of the Gods. Runners can choose between a road race or a trail race! Beginning in 2022, we've be […]

The Greenland Trail Race offers four outstanding distances in southern Douglas County. Run the 4 Miler, the 8 Miler, the 25K, or tackle the 50K ultramarathon, Colorado’s fastest 50K! With Pikes Peak as your backdrop, you’ll cruise over a soft dirt trail on your way to a new personal best. With chip timing, an innovative technical running shirt in men’s and women’s sizing, food and beer at the finish, this race will make you want to come back for more!

Adams County will host its annual 5K race, and 1 mile fun run at the Riverdale Regional Park which is home to the Adams County Fair.  Registration opens at 6:45 a.m., and the 5k race starts at 7:30 a.m.  The Fun Run will start 30 minutes later at 8:00 a.m.  Proceeds from the Foster Care […]

The Collegiate Peaks Trail Run takes place in Buena Vista, Colorado and offers two race distance options - 25 miles and 50 miles.  However, the Forest Service/Bureau of Land Management officials re-routed a portion of  Trail. Because of this change, runners who signup for 25 miles will actually run 25.3 miles and runners who signup for […]

Niwot’s Challenge is a very difficult, grass-roots, ultramarathon in Colorado’s Front Range. It is modeled after the arduous Barkley Marathons in Tennessee, and the historic More and More Difficult 50K in New Hampshire. Much of the information for this event is kept secret with an exception for those who are accepted for entry. This is […]

Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]

Our 12th annual Hope House 5K & Fun Run will take place on Saturday, May 3, 2025 at Apex Center (13150 W 72nd Ave, Arvada, CO 80005)! It will be a fun-filled day full of fast runners, speed walkers, parents pushing strollers, smiley children, exciting finishes, an epic Diaper Dash, live music and more. We hope you […]

The DUCK WADDLE 5K race begins at east side of Estes Park Parking Structure. Each runner and walker will follow the scenic Lake Estes Trail counterclockwise to the finish line (west of the Lake Front Parking area on north side of Lake Estes). The DUCK WADDLE 5K foot race welcomes all abilities and those wanting to have a ton of fun […]

Join us for the Denver Beer Co. 50k run on Saturday, May 3, 2025. This unique urban odyssey 50k run connects all 5 Denver Beer Co. Taprooms (Olde Towne Arvada > Platte St. > Lowry > South Downing > Littleton). Compete as a solo runner or as a relay team. Relay teams can have up […]

The Furry Scurry is an annual, fun-filled festival and two-mile dog walk at Denver’s Washington Park to benefit the animals at the Dumb Friends League.  No matter where you scurry, every step you take and dollar you raise will make a lasting difference for the animals in our care. 

We’re helping Parks and Rec celebrate Loveland's Arbor Day. Come enjoy food trucks, live music, and a 2 mile fun run to help raise money for the tree planting fund. Each participant will receive a custom bib, custom swag (TBD), and lots of FUN!

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 […]

Returning after 5 years and a huge request from our followers...The PASTA RUN will return to Louisville in 2025!  What more do runners like but Pasta....this event and run is like no other in Colorado and SOLD OUT fast in 2019. 15 minutes from Boulder/20 minutes from Denver. The 5k, 10k and Half Marathon TRAIL […]

The Hayden Cog Run is one of the longest consecutively run races of the Steamboat Springs Running Series and in the state of Colorado! This is a Routt County Classic held in the small town of Hayden Colorado 25 minutes west of Steamboat. The Cog Run is a challenging 8.4 mile out and back course […]