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A NEW race experience and FREE public music festival is coming to Castle ROCK, CO on July 4th produced by RUN to Change Lives™. 1/2 Marathon RELAY of up to 3 people, the classic 5k distance, and FREE 1k Little Rock-It RUN (8 years and under)! Amp-Up your July 4th and start a new tradition […] 
Welcome to the Staunton Rocks! Marathon & Half, an event put on by trail runners for trail runners. 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. The flowing trails […] 
Showcasing a unique city-to-city trail connection, The Long View Marathon and Half Marathon runs from Fort Collins to Loveland. Together, Gnar Runners and Sweetheart City Racing bring a unique collaboration to Colorado’s running scene in this one-of-a-kind race event. As the only certified Marathon to successfully happen last year in Colorado midst COVID restrictions, you […] 
Join us this August for a fun series of shorter midweek trail races, each Tuesday evening from August 10-31. 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 […] 
The 9th running of the Black Squirrel Trail Half Marathon will take place on the wonderful trails of Lory State Park to the northwest of Fort Collins, CO. The trail half marathon course offers a tour of the outer boundaries of Lory State Park, providing breathtaking views to the east of Horsetooth Reservoir, Fort Collins […] 
Welcome to the 14th running of the Blue Sky Marathon, Fort Collins’ original and only trail marathon. Taking place on the trails between Horsetooth Mountain Park and the Devil’s Backbone Open Space, the course takes you on a north-south tour of the easternmost hogbacks of Northern Colorado’s mighty Front Range. With 3,500 feet of elevation […] 
The Never Summer 100km & 60km will take place almost entirely within the boundaries of State Forest State Park and run between the Never Summer Mountains on the northern border of Rocky Mountain National Park (RMNP) and the Medicine Bow Mountains to the north of Cameron Pass. The first 20 miles of each race will […] 
Welcome to the 10th running of the Quad Rock 50 and 25 mile trail races, an event put on by trail runners for trail runners. Taking place on the trails and hills west of Fort Collins in Lory State Park and Horsetooth Mountain Park, the Quad Rock 25/50 will take you on a tour of […] Resolution Run 5K @ Edora Pool Ice Center, Fort Collins, Colorado, United States on 31 December 2021
Run out the old year, and welcome the new! Now in its 38th year, the Resolution Run is a family-friendly, neighborhood streets 5K starting & finishing at the Edora Pool Ice Center. Kids, strollers, dogs & walkers welcome! Finish in under 20:22 to earn a special prize! The race is held after sunset – we’ll […] 
Welcome to the 48th running of the Horsetooth Half Marathon. Your race will take you on a scenic point-to-point journey from Hughes Stadium, the former home of the CSU Rams, to the finish line party at New Belgium Brewery. On the way you’ll tackle the challenging hills of Centennial Drive along the shorelines of the […] 
CALLING ALL SUPERHEROES! Get ready to walk, run & FLY at the Denver Superhero Heart Run! Join forces with Heart Heroes & Conquering CHD-Colorado for the 7th annual 5k/2k run aimed at raising awareness & funds for Congenital Heart Defects (CHD). 
MAD Racing Colorado invites you to work up an appetite for the Palisade Peach Festival by running a fun cross-country style course right before the Palisade Peach Festival opens. 
50% FESTIVAL + 50% MUD RUN = 100% AWESOME! Here’s how it works: THE FESTIVAL The 5,000-person party starts at 8:30 a.m. with a DJ on the main stage, booths giving away free stuff, all kinds of interactive games (dance-offs, stein-hoisting, pie-eating…), and tasty food and beer to keep you fueled all day. The best […] Join us at 8,504 feet for a scenic 5K or a shorter 2K walk, beginning and ending in the heart of Allenspark, Colorado. The 5K race & 2K walk circles through downtown and along dirt roads amid pine forest, boasting awe inspiring views of high mountain peaks. Register your pup for the Dog Jog and […] 
CALLING ALL SUPERHEROES! Get ready to walk, run & FLY at the 6th Annual Denver Superhero Heart Run on Sunday, June 28, 2020! This 5k/2k event will raise funds and awareness for Congenital Heart Defects (CHD), the most common birth defect in the world. Registration includes superhero cape, finisher’s medal, run bag & much more! […] 
“Welcome to the 11th running of the Blue Sky Marathon, Fort Collins’ original and only trail marathon. Taking place on the trails between Horsetooth Mountain Park and the Devil’s Backbone Open Space, the course takes you on a north-south tour of the easternmost hogbacks of Northern Colorado’s mighty Front Range. With 3,500 feet of elevation […] 
“The Black Squirrel Trail Half Marathon will take place on the wonderful trails of Lory State Park to the northwest of Fort Collins, CO. The trail half marathon course offers a tour of the outer boundaries of Lory State Park, providing breathtaking views to the east of Horsetooth Reservoir, Fort Collins and the Great Plains; […] 
Showcasing a unique city-to-city trail connection, The Long View Marathon and Half Marathon runs from Fort Collins to Loveland. Together, Gnar Runners and Sweetheart City Racing bring a unique collaboration to Colorado’s running scene in this one-of-a-kind race event. Resolution Run 5K @ Edora Pool Ice Center, Fort Collins, Colorado, United States on 31 December 2020
“Run out the old year, and welcome the new! Now in its 36th year, the Resolution Run is a family-friendly, neighborhood streets 5K starting & finishing at the Edora Pool Ice Center. Kids, strollers, dogs & walkers welcome! Finish in under 20:21 to earn a special prize! The race is held after sunset – we’ll […] 
Spartan Super: 10K | 25 Obstacles This true athletic test offers the ideal blend between distance and speed. Are you determined to push beyond excuses? You just might have the guts for a Spartan Super. Spartan Sprint: 5K | 20 Obstacles 3 miles that will change your life. The Sprint is the perfect distance, whether […] 
The Never Summer 100km will take place almost entirely within the boundaries of State Forest State Park and run between the Never Summer Mountains on the northern border of Rocky Mountain National Park (RMNP) and the Medicine Bow Mountains to the north of Cameron Pass. The first 20 miles of the race will offer a […] 
Welcome to the Quad Rock 25 & 50 mile trail race, an event put on by trail runners for trail runners. Taking place on the trails and hills west of Fort Collins in Lory State Park and Horsetooth Mountain Park, the Quad Rock 25/50 will take you on a tour of the Fort Collins skyline, […] Resolution Run 5K @ Edora Pool Ice Center, Fort Collins, Colorado, United States on 31 December 2019
“Run out the old year, and welcome the new! One of Fort Collins’ oldest races, the Resolution Run, is back for its 35th year with new features and surprises. Get a head start on your New Years Resolution by enjoy a family-friendly, neighborhood streets 5K starting & finishing at Edora Pool Ice Center. Kids, strollers, […] 
Welcome to the 47th running of the Horsetooth Half Marathon. Your race will take you on a scenic point-to-point journey from Hughes Stadium, the former home of the CSU Rams, to the finish line party at New Belgium Brewery. On the way you’ll tackle the challenging hills of Centennial Drive along the shorelines of the […] Lisa Nelson’s Mustang Stampede 5K Memorial Scholarship Run/Walk in memory of Coach Lisa Nelson, a beloved faculty member of Ralston Valley High School. Lisa passed away from cervical cancer in March 2013.The purpose of this 5K Run/Walk is to unify the local community in commemoration of her life and raise funds for a college scholarship […] |
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