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Date:
Sat, Jul 11, 2026 at 7:00 AM – 11:00 AM
Location:
10170 Church Ranch Way
Westminster, Colorado
80021
United States
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Links:
runsignup.com
Tags:
10k 13.1 Miles 5k Run Trail

Get ready for a sun-soaked adventure and a fantastic mid-season challenge with our 13th Annual Dog Days 5K, 10K & Half Marathon, benefiting Do Over Dogs! Held in a central location between Denver and Boulder, our courses wind northeast along the scenic Big Dry Creek Trail. As you run, you’ll enjoy breathtaking views of the Flatirons on the horizon. Our trail is perfect for dogs, featuring a generous amount of soft surface along the 10K and half marathon routes. Plus, we have a special dog division to award the fastest pups at each distance and a dog-themed costume contest for extra fun! And continue the challenge by participating in the endless series counterpart, Fa La La, in December.

More races nearby

  • RMRR Spring Marathon Training Series #2 [rmrr.org] [Register at runsignup.com]

    Sat, Apr 11, 2026 at 8:00 AM

    Description

    RMRR provides consistent and individualized marathon training opportunities for runners of all abilities.

    All races in the series are low cost, friendly, fully supported, and officially timed.The...

    RMRR provides consistent and individualized marathon training opportunities for runners of all abilities.

    All races in the series are low cost, friendly, fully supported, and officially timed.The first two races, March 29 & April 11, are 10 Mile and 20 Mile races (runners choice for distance). The third race in the series is the Inaugural Blue Heron half marathon. All you need to do is focus on your running! Our races fit perfectly in training schedules for Boston, London, Colfax, and other spring full and half marathons.

    Everyone is welcome to Marathon Training Series races: RMRR members, guests, training team members, everyone! The course is clearly marked, and mile markers will help you gauge your time. Aid stations will have water, sports drink, and gels. Winners of each distance will receive ribbons and running store gift certificates. We make it easy for you to work on your pace, your nutrition and drinking, and getting everything ready for your big race.

    RMRR members get a 50% discount (automatically taken at registration check out). Race day registration will be available.

    Please note that for everyone's safety dogs or running strollers are not permitted on our courses. Thanks for understanding.

    The races begin at 8 am at the Platte River Trailhead Park in Thornton, at 88th and Colorado.

    9.2 km from Westminster
    Thornton, Colorado, 80229, United States
    OpenStreetMap Google Maps

    10 Miles 20 Miles Marathon Run Trail

  • All-Out Beat the Heat [runsignup.com]

    Sat, Apr 18, 2026 at 7:00 AM

    Description

    Unleash your inner superhero at the 14th Annual Beat the Heat event! This year, we're calling all champions to assemble where one of Colorado's favorite trails joins one of its most glorious parks,...

    Unleash your inner superhero at the 14th Annual Beat the Heat event! This year, we're calling all champions to assemble where one of Colorado's favorite trails joins one of its most glorious parks, and support the vital mission of Adaptive Adventures. All course swill send athletes on a heroic journey, following the winding Big Dry Creek Trail southwest, with the half marathon course offering magnificent views of Standley Lake against the epic backdrop of the Front Range. It’s an official BOLDERBoulder qualifying event, so come prepared to put your superpowers to the test and achieve a truly marvel-ous finish time!

    0 m from Westminster
    10170 Church Ranch Way, Westminster, Colorado, 80021, United States
    OpenStreetMap Google Maps

    5k 10k 13.1 Miles Run Trail

  • DoNot Stop Half Marathon (5k/10k) - Denver [runsignup.com]

    Sun, Apr 19, 2026 at 8:00 AM

    Description

    Question: Is it supposed to be DO NOT STOP, or DONUT STOP? Answer: YES!

    Like Running or Walking? Love Donuts? This race is for you! Join us for the annual DoNot Stop Half Marathon, 5k/10k! A...

    Question: Is it supposed to be DO NOT STOP, or DONUT STOP? Answer: YES!

    Like Running or Walking? Love Donuts? This race is for you! Join us for the annual DoNot Stop Half Marathon, 5k/10k! A donut-themed event that is perfect for the whole family.

    The fun includes -

    • Great Swag - designer shirt & custom medal

    • Chip-timing with live results and awards

    • Free photos

    • Delicious donut waiting at the finish line

    • Plenty of fun!

    Grab your friends and family, you are not going to want to miss this one!

    Can't make the race? No problem! We offer a virtual race option where you can run anywhere, at any time, and still earn the fun swag!

    *Youth-based pricing for the 5k/10k, 12 & Under are only $15

    • Half - Marathon registration includes a custom bib, designer shirt, and an awesome finisher medal!

    • 10k registration includes a custom bib, designer shirt, and an awesome finisher medal!

    • 5k registration includes a custom bib, designer shirt, and an awesome finisher medal!

    • 1 Mile registration is untimed and includes a custom bib, designer shirt, and an awesome finisher medal!

    The kid's dash is a fun, untimed dash for our kiddos ages 10 and under. Registration includes a mini bib, youth-sized shirt, and a specifically crafted medal for our kids' dash event! (If your child wants to run the kid's dash, and doesn't want the SWAG, they are welcome to run with us on race day for free!)

    **Register by midnight on Thursday, two Thursdays before race day, to guarantee your shirt!

    Please note that there is a mandatory $12 parking fee per vehicle, collected by the park. Be prepared to pay this fee upon arrival, unless you have a valid state park pass, in which case the fee is waived.

    5.9 km from Westminster
    Westminster, Colorado, 80020, United States
    OpenStreetMap Google Maps

    1 Miles 3.1 Miles 5k 6.2 Miles 10k 13.1 Miles Half Marathon Run Virtual Walk

  • Colorado Women's Classic - Westminster [runsignup.com]

    Sun, May 10, 2026 at 8:00 AM

    Description

    Description

    We are excited for the 2026 Colorado Women's Classic! While focused on women, all genders are WELCOME at this event!

    We will run this event rain or shine! :)

    This is THE race for ALL....

    Description

    We are excited for the 2026 Colorado Women's Classic! While focused on women, all genders are WELCOME at this event!

    We will run this event rain or shine! :)

    This is THE race for ALL. THE. GOODIES.

    The Colorado Women's Classic is about the POSITIVE parts of being in a community of women...and the men around here support this event very well, too!

    So many women run this event with their training buddies - run partners, sisters, mothers, daughters and granddaughters and now open to the men in your life too! We hope YOU can join us again on Mother's Day!

    We strive to treat you well, so here's our top ten list of things you get to enjoy at this race!

    1. FOUR aid stations over the course of 10 miles

    2. CHIP timing on your race bib (so you don't have to stop and turn in a timing chip after you're done!)

    3. A FRESH FLOWER for every finisher!

    4. A remarkable MEDAL for 10 Miler Finishers

    5. FREE PHOTO DOWNLOADS so you can share your Mother's Day Memories with everyone

    6. RAFFLE PRIZES of cool stuff when you donate to Growing Home....and so many of them!

    7. SUPER SOFT and CLASSY race shirts with specific cuts for WOMEN.

    8. LOTS OF FOOD in the expo. A cupcake tower (gluten free too), granola bars!

    9. A Women-Centric Expo featuring representatives from businesses whose job it is to meet the needs of WOMEN.

    10. A staff of experienced and FRIENDLY race officials and volunteers who want you to succeed and are on hand to answer your questions and think about your needs before you even know you need it...like passing around the sunscreen at the start line! I mean it; WE LIKE YOU!

    1.3 km from Westminster
    10600 Westminster Blvd, Westminster, Colorado, 80021, United States
    OpenStreetMap Google Maps

    5k 10k 10 Miles Run

  • Colorado 13er (Half Marathon/10k/5k) [runsignup.com]

    Sun, Jun 07, 2026 at 6:30 AM

    Description

    The Colorado 13er is THE event where the best parts of trail running and road racing combine to create a truly enjoyable, kind-to-your-body, well-supported 13.1 race!

    Seasoned runners and...

    The Colorado 13er is THE event where the best parts of trail running and road racing combine to create a truly enjoyable, kind-to-your-body, well-supported 13.1 race!

    Seasoned runners and first-timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.


    Join us for this exceptionally scenic, looped 13.1 course which runs through gorgeous Louisville, Colorado!

    We designed this course so that you can enjoy all of the spectacular views of the Flatirons that Colorado has to offer. Come see for yourself!

    Groups/Teams/Families: Save $5 per person for groups of 5 or more! See our FAQ page for more questions!

    Click the drop-down menu under "race info" for all race details! Any questions, please email us at info@colorado13er.com


    Here's the good stuff!!

    • 10 water station passes

    • 5 port-a-john passes

    • 9 miles of FLAT, crushed gravel

    • nearby, free parking

    • spectator friendly

    • 13.1 finisher medal

    • 10k or 5k options available

    • iced towels at the finish line

    • gender-specific performance tees for every registrant

    • chip timed with texted results

    • live, real-time results posted online

    • 13.1 miles of million-dollar views AND

    • the amazing sense of accomplishment you can only get from running 13.1! (or 5k or 10k!)

    9.4 km from Westminster
    1200 Dillon Road, Louisville, Colorado, 80027, United States
    OpenStreetMap Google Maps

    5k 10k 13.1 Miles Gravel Half Marathon Run Trail

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