13 running and walking events in Westminster, Colorado

From big races to Saturday morning group runs—find running and walking events and connect with the local endurance sports community.

• All-Out Beat the Heat [runsignup.com]
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  Sat, Apr 18, 2026 at 7:00 AM

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  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!

  5k 10k 13.1 Miles Run Trail

  10170 Church Ranch Way, Westminster, Colorado, 80021, United States
  OpenStreetMap Google Maps
• DoNot Stop Half Marathon (5k/10k) - Denver [runsignup.com]
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  Sun, Apr 19, 2026 at 8:00 AM

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  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.

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

  Westminster, Colorado, 80020, United States
  OpenStreetMap Google Maps
• Colorado Women's Classic - Westminster [runsignup.com]
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  Sun, May 10, 2026 at 8:00 AM

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  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!

  10. FOUR aid stations over the course of 10 miles

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

  12. A FRESH FLOWER for every finisher!

  13. A remarkable MEDAL for 10 Miler Finishers

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

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

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

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

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

  19. 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!

  5k 10k 10 Miles Run

  10600 Westminster Blvd, Westminster, Colorado, 80021, United States
  OpenStreetMap Google Maps
• All-Out Dog Days [runsignup.com]
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  Sat, Jul 11, 2026 at 7:00 AM

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  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...

  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.

  5k 10k 13.1 Miles Run Trail

  10170 Church Ranch Way, Westminster, Colorado, 80021, United States
  OpenStreetMap Google Maps
• Westminster Trail Races [aravaiparunning.com] [Register at ultrasignup.com]
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  Sat, Aug 15, 2026

  5k 10k 35k 50k Half Marathon Trail Ultra

  10020 100th Ave, Westminster, Colorado, 80021, United States
  OpenStreetMap Google Maps
• Pioneer Prairie Dog Half, 10k & 5k [runsignup.com]
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  Sun, Aug 23, 2026 at 7:30 AM

  Description

  Welcome to the Pioneer Prairie Dog Half Marathon event; the one that started the series! With 10k and 5k events too!

  Everyone is back to school and slipping into a routine. Make this your mental health break as you break away from the chaos of weekly schedules and give yourself a morning to race in the crisp autumn air! You'll be glad you took time for YOU!

  5k 10k 13.1 Miles Run

  10600 Westminster Blvd, Westminster, Colorado, 80021, United States
  OpenStreetMap Google Maps
• All-Out Fall Fest [runsignup.com]
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  Sat, Sep 19, 2026 at 7:00 AM

  Description

  One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest! As courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with the Flatirons on the horizon will come into view. Its Endless Series sidekick in September is Beat the Heat.

  5k 10k 13.1 Miles Run Trail

  10170 Church Ranch Way, Westminster, Colorado, 80021, United States
  OpenStreetMap Google Maps
• Westy Half & 5k [runsignup.com]
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  Sun, Oct 11, 2026 at 8:00 AM

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  Join the WESTY HALF and 5k this fall!

  The Hometown Race Series features half marathons and 5k distance events in outlying communities outside the Denver and Boulder metro areas.

  Whatever distance...

  Join the WESTY HALF and 5k this fall!

  The Hometown Race Series features half marathons and 5k distance events in outlying communities outside the Denver and Boulder metro areas.

  Whatever distance you're ready to tackle, we'll be there with you to celebrate at the finish line! This is one of the few 5k events where FINISHER MEDALS are awarded to each participant. Go home with proof of your pride and show off that bling!

  5k 13.1 Miles Run

  10600 Westminster Blvd, Westminster, Colorado, 80021, United States
  OpenStreetMap Google Maps
• All-Out Fa La La [runsignup.com]
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  Sat, Dec 05, 2026 at 9:00 AM

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  Ho-ho-hit the trail this holiday season at the 15th Annual Fa La La 5K, 10K & half marathon! This festive run/walk benefits A Precious Child and takes you on a scenic journey along the Big Dry Creek...

  Ho-ho-hit the trail this holiday season at the 15th Annual Fa La La 5K, 10K & half marathon! This festive run/walk benefits A Precious Child and takes you on a scenic journey along the Big Dry Creek Trail with amazing Front Range views. Bring your furry friends (they'll love the soft surfaces!), your holiday spirit, and a gift donation. Don't miss our summer Dog Days event for another tail-wagging good time and to track your fitness progress in our endless series challenge!

  5k 10k 13.1 Miles Run Trail Walk

  10170 Church Ranch Way, Westminster, Colorado, 80021, United States
  OpenStreetMap Google Maps
• Candy Cane Course - Denver [runsignup.com]
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  Sun, Dec 06, 2026 at 9:00 AM

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  Join us for the annual Candy Cane Course 5k/10k/15k! A fun, Christmas-themed event that is perfect for the whole family.

  The fun includes -

  • Great Swag - designer shirt & custom medal

  • Chip-timing...

  Join us for the annual Candy Cane Course 5k/10k/15k! A fun, Christmas-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 Treats 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 $22!

  • 5k/10k/15k 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!

  1 Miles 3.1 Miles 6.2 Miles 9.3 Miles Run Virtual

  Westminster, Colorado, 80031, United States
  OpenStreetMap Google Maps

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