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16 running events in Boulder, Colorado

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

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  • Lucky Leprechaun 5K [teamboco.com] [Register at runsignup.com]

    Sun, Mar 15, 2026 at 9:00 AM

    Description

    Join us on Sunday March 15th, for our Lucky Leprechaun 5K Fun Run taking place at Twisted Pine Brewing Company - 3201 Walnut St Suite A, Boulder, CO 80301.

    • This race is a Bolder Boulder Qualifier!...

    Join us on Sunday March 15th, for our Lucky Leprechaun 5K Fun Run taking place at Twisted Pine Brewing Company - 3201 Walnut St Suite A, Boulder, CO 80301.

    • This race is a Bolder Boulder Qualifier!

    The Lucky Leprechaun Fun Run celebrates the origins of Saint Patrick's Day, or the Feast of Saint Patrick, which is a cultural and religious celebration held on the 17th of March each year. The holiday has evolved into a world wide celebration of Irish culture with parades, special foods, music, dancing, drinking and a whole lot of green, so come on out and celebrate this great Irish tradition.

    We will have Irish Band “Avourneen”, and Boulder’s “Mc Teggart Irish Dancers” keeping everyone entertained, and Savory Cuisines Catering will have a delicious Irish breakfast burrito for everyone to enjoy post race, along with a choice of Twisted Pine Brewing Company beer:

    • Irish Red Ale

    • Dublin Magic Nitro Stout

    • Green Leprechaun (Mexican Lager)

    “Twill” be a fine morning to celebrate, this side of the rainbow, so join your family and friends and dress up in your luckiest gear and join a sea of green running here in Boulder.

    To get your FREE T-Shirt, your must register BEFORE WEDNESDAY JANUARY 28.

    • Baby strollers ARE allowed.

    • NO Dogs are permitted in the race.

    • There are NO race refunds.

    5k Fun Run Run

    3201 Walnut St, Boulder, Colorado, 80301, United States
    OpenStreetMap Google Maps
  • Mountain Lions Track Program [teamboco.com] [Register at runsignup.com]

    Mon, Mar 23, 2026 at 3:30 PM

    Description

    The Mountain Lions Track running program, provides a fun and encouraging environment for Elementary school aged children (5 - 11 years), to learn the basics of middle distance running over a 6-week...

    The Mountain Lions Track running program, provides a fun and encouraging environment for Elementary school aged children (5 - 11 years), to learn the basics of middle distance running over a 6-week period. They will learn good running form, improve both speed and strength, in an environment that is focused on the enjoyment of running. All of our running programs are held twice a week after school, and at a different local City of Boulder or City of Louisville Park, that is convenient to you.

    Over the course of the 6-week program, participants will have the opportunity to compete in 2 x FREE track meets. These track meets are designed for the kids to gain confidence in themselves, and their running ability, with the focus on competing with kids that have similar times and abilities.

    RACES:

    TRACK MEET 1 - Sunday, April 12th

    This meet will be an "Introductory to Track" clinic, and kids will compete in hurdles, a 400m and relay event. This clinic is designed for kids that have never done track, or lack confidence in track running. This event will NOT be timed, and there is no sign up. For kids that do not need or want to do the “Introductory to Track” clinic, they have the option to compete in either the 800m or 1500m event based on their coaches recommendations. This portion of the event will be timed, and parents will be given a coupon code to sign up their kids for FREE.

    TRACK MEET 2 - Sunday, May 3rd

    This meet is our "Frank Shorter Track Classic" event, and kids have the option to compete in either the 800m or 1-mile event based on their coaches recommendations. This event will be timed, and parents will be given a coupon code to sign up their kids for FREE. All participants will receive a medal, honoring a local Boulder Olympian.

    Run

    Parks North Boulder South Boulder East, Boulder, Colorado, 80301, United States
    OpenStreetMap Google Maps
  • 4-pack registration 2026 [dashndine5k.com] [Register at raceroster.com]

    Tue, Apr 28, 2026 at 6:30 PM

    Description

    Pre-purchase your race entries and save time and money!

    • You can pick up your bib at the registration tent at each event.

    • Buying the multipack gets you an entry and dinner for each race you attend.

    5k Run

    North 51st Street, Boulder, Colorado, 80301, United States
    OpenStreetMap Google Maps
  • Dash & Dine 5k #1 [dashanddine5k.com] [Register at raceroster.com]

    Wed, Apr 29, 2026 at 6:30 PM

    Description

    The Dash & Dine 5k is Boulder's favorite spring tune-up race series. This family-friendly race is a series of four races Tuesday nights May held at the beautiful Boulder Reservoir in Boulder, CO....

    The Dash & Dine 5k is Boulder's favorite spring tune-up race series. This family-friendly race is a series of four races Tuesday nights May held at the beautiful Boulder Reservoir in Boulder, CO.

    Race hard, then stick around for series awards and giveaways while we enjoy more great food from a local favorite.

    Start time: 6:30 PM

    If you would like a little extra space at the start line, you are welcome to take your time and start after everyone else in that wave has set off since we will have chip timing.

    Race Day Registration will be available for $40 but ordering food is so much easier when you register ahead of time :)

    If you are or have recently been sick or believed to be exposed to COVID, please stay home. We are happy to transfer your registration to another date.

    5k Run

    North 51st Street, Boulder, Colorado, 80301, United States
    OpenStreetMap Google Maps
  • Friends of the National Center Science Stride 5K [friendsofthenationalcenter.org] [Register at runsignup.com]

    Fri, May 01, 2026 at 9:00 AM

    Description

    The Friends of the National Center Science Stride 5K will hold its second annual run/walk in the Spring of 2026.

    The Science Stride 5k brings together our community for a common cause: Inspiring the...

    The Friends of the National Center Science Stride 5K will hold its second annual run/walk in the Spring of 2026.

    The Science Stride 5k brings together our community for a common cause: Inspiring the next generation of scientists! This event provides an excellent opportunity for everyone who believes in the importance of STEM education to come together and support Friends of the National Center. Runners and walkers of all abilities are encouraged to join!

    Are you a remote employee or someone who wants to support our work from afar? Please sign up for our Virtual 5K! You'll run or walk and log your time. You can even join a team and receive a race t-shirt, just like our in person participants!

    Your participation in the Science Stride 5K directly supports Friends’ mission is to inspire, support, and educate the next generation of scientists and researchers. Friends is committed to addressing the intricate challenges of our Earth system by ensuring that the cutting-edge research and innovation at UCAR and NSF NCAR are carried forward into the future.

    We’d love for you and your organization to get more involved with the great work of UCAR and NSF NCAR via Friends of the National Center. If you are interested in supporting the next generation of scientists solving important global problems, please consider sponsoring the Science Stride 5K! The Science Stride 5K is an awesome community-focused event and a great opportunity for some team-building and to demonstrate your commitment to science education. Click on our Science Stride 5K Sponsorship Packet to learn more!

    We can’t wait to see you at the Science Stride!

    3.1 Miles 5k Run Virtual Walk

    5275 Reservoir Rd, Boulder, Colorado, 80301, United States
    OpenStreetMap Google Maps

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