Join us in celebrating the start of summer in the triathlon capital of the country, Boulder, CO. An athlete favorite with its breath-taking sunrise swim, fast bike and smooth run course, all with the flatirons painted in the background. You’ll never want to race another venue again after this experience! The seasoned race crew led […]

The Boulder Sunrise 10k & 5k Run has a reputation of being one of the most scenic courses around. BBSC will provide runners with a supported course, including plenty of aid stations fully stocked and staffed with volunteers. Once you reach the finish line enjoy the post-race party with music, beer, food, and awards! This […]

For the nineth year, the Town of Frisco is hosting a series of four kids’ trail running races over the summer. The entire family is welcome to come out for a night of family fun at the Frisco Adventure Park. Once the kids cross the finish line, they can grab some snacks at the Frisco […]

Join Run to Change Lives at the Douglas County Event Center in Castle Rock for the 2nd Annual ROCK-IT RUN 5K, Half Marathon and 1K Little Rock-It RUN (8 years and under). It’s time to start a new tradition on July 4th and feel good about Changing Lives. Save 15% with coupon code CORUNNER.

Run, skip, hop, gallop, lolly gag or moon walk on July 4th with your friends and family to support Palmer Lake Elementary School at the Annual July 4th Fun Run. This event kicks off the 4th of July festivities in the Tri Lakes Area and supports the children of PLES. The gorgeous and fast 4-mile […]

We are so glad to be able to bring you a Superior tradition, The Superior Mile on July 4th! This year's race is even more special as all proceeds will go to the Marshall Fire fund! Also, all residents of Superior will be able to participate in the race for free! We love the fact of bringing the community together for some healing, but also to look to the future. We are stronger together!

Start your Fourth of July weekend with a bang! Join hundreds of runners and walkers at City Park in Fort Collins on Saturday, July 2nd for a flat, fast, and fun 5K that welcomes all ages and abilities. The whole family is welcome so be sure to pack up the pup before you head over and don’t forget the costumes and face paint!

Join Mount Evans Home Health and Hospice for the 40th annual Freedom Run 5K in Evergreen on July 4th! The scenic 5-kilometer (3.1 miles) course follows gently rolling terrain through residential areas, beginning at 8 am Evergreen Middle School and ending with a festive finish line at Nick’s Pro Fitness.

Dress up as your favorite American Hero! This could be your mom, dad, Albert Einstein, Batman, Superman, or the Powerpuff girls! This 5K and 10K is all about celebrating GREAT people who do and have done GREAT things! Come be GREAT with us!

Kick off your 4th of July with a family-friendly and festive 5K! This fun run/walk is perfect for first-time 5K participants, elite runners, kids, parents with strollers, and everyone in between - even your furry friend! After the race, head over to Highlands Ranch Parkway to catch the annual HRCA 4th of July Parade! We […]

Start off your July 4th with inaugural Niwot Downhill Mile! We are creating a community event to celebrate not only our independence, but also our resilience after a tough 2020. Come celebrate with friends, family, and our running community. Get ready to challenge your PR!

The Telluride Foundation is hosting the annual Fourth of July foot race, the Rundola. The Rundola is an open registration uphill foot race. Runners start at the base of the gondola on the town of Telluride side and finish at the top of the ridge. Runners and hikers will climb up the Telluride Trail (4,600 […]

Don't miss this favorite event of the 4th of July celebration! This scenic 10K trail running race offers up some of the best views in the Breckenridge! This race is limited to 500 people and usually sells out in June. Registered racers receive a sweet race tee! Cutoff Times: Please be advised that there is […]

July 4th is celebrated in a number of different ways, with parades, barbecues, sparklers and fireworks, BUT there has been no better way since 2008, to get your July 4th morning off to a great start, than doing Boulder’s traditional 4K on the Fourth, which is run on a flat and fast course, followed by […]

The LL5K, hosted by Sweetheart City Racing is scheduled to begin at Loveland Fairgrounds Park on July 4th at 8:00 am. We welcome runners and walkers, and all abilities! We are proud to support two local Veteran groups, Health4Heroes and American Legion Post 2000 (local veteran’s assistance fund) with the 2023 Liberty 5K. Please check […]

Looking for a new summer tradition suitable for all abilities?! Join us this July for the Georgetown SUP-Athlon! Participants will embark on a 0.5-mile stand-up paddleboarding journey along the scenic Georgetown Lake inlet, followed by a 5-mile road/gravel/dirt biking course around historic Georgetown. Finally, the 5k run will loop you around beautiful Georgetown Lake. Teams […]

This long-standing holiday tradition is one of the most widely anticipated activities of the Fourth of July week, and you don't want to miss out on all the fun. Whether you're a seasoned runner or a casual walker, we've got a race for you! With a 5-mile, 5k, and a family fun run, everyone can […]

Named Best Trail Race by Colorado Runner Magazine in 2006 & 2011! Join us for the 49th annual Vail HillClimb! The Vail HillClimb tests local, regional and national runners with a historic seven mile climb from Vail Village to Mid-Vail. Race participants will race up Vail History as they follow the same course that was once a gravel […]

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 […]

This trail race is a new event that started in 2017 at the base of Hahns Peak in North Routt County. Running this course started with a few hardcore North Routt locals meeting at the beautiful Cabins at Historic Columbine every 4th of July. From there, they would race to the summit and fire outlook […]