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  • Distance: 7.3 km
    Sat, Aug 01, 2026 at 7:00 AM

    Join us for the Heatwave Half Marathon, 10K, & 5K!

    A sun-soaked summer challenge that’s perfect for the whole family.

    The fun includes –

    • Great Swag – designer shirt & custom medal

    • Chip-timing with live results and awards

    • Free photos

    • FREE ice cream at the finish to help you cool off

    • Plenty of hot fun in the summer sun!

    Grab your friends and family—you won’t 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 is available: ages 12 & under are only $17!

    Half Marathon/10K/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!

    Kid’s Dash is a fun, untimed dash for ages 10 and under. Registration includes a mini bib, youth-sized shirt, and a specially crafted medal for our youngest runners! (If your child wants to run the kid’s dash without swag, they’re welcome to run free on race day!)

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

    See full details
    1 Miles5k10k13.1 MilesHalf MarathonRunVirtual via RunSignup
  • Distance: 9.3 km
    Sun, Aug 09, 2026 at 8:00 AM

    The Market Mile is a community-based, one-mile walk/run that invites you to give back and have fun doing it by joining us at our great after-party in Union Station!

    Beyond the promise of sunny summer weather, a one-mile course straight down Market Street, the “take it at your own pace” vibes and a buzzing after-party at Union Station, the Market Mile is different because it’s powering up the nonprofits who work tirelessly on the future of our city.

    The Market Mile serves St. Louis through core areas of need: accessible green spaces, safe housing, public safety, and youth programs. We’ve carefully selected Market Mile Race Beneficiaries that you may choose to support when you register.

    We raised over $16,000 for nonprofits in 2024 and 2025!

    During our inaugural event in 2024, we are proud to report that we raised $1,778 for Peter and Paul Community Services, $1,693 for Great Rivers Greenway, and $2,043 for Backstoppers. In 2025, we raised $3,086.83 for Great Rivers Greenway, $7286.36 for Peter and Paul Community Services, $2662.89 for BackStoppers, and $2,843.99 for Boys and Girls Club!

    Our beneficiaries fulfill core areas of need in St. Louis: accessible green spaces, safe housing, public safety, & youth programs.

    See full details
    4 MilesKidsRun via RaceRoster
  • 27 S Brentwood Blvd, Clayton, Missouri, 63105, United States
    OpenStreetMap Google Maps
    Distance: 2.7 km
    Sun, Aug 16, 2026 at 8:00 AM

    The City of Clayton, Inkwell, The Center of Clayton and Big Shark Bicycle Company are proud to announce the 11th Annual Inkwell Clayton Kids Triathlon. This year's event will take place at Clayton Shaw Park Outdoor Pool, Shaw Park and the new GRG Centennial Greenway. This fun and twisty course will introduce kids ages 7- 14 to the sport of triathlon. New for this year- following the completion of the younger age groups we will be holding a free Fun Run on the @1 mile run course.

    See full details
    Fun RunKidsRunTriathlon via RunSignup
  • Distance: 1.8 km
    Sat, Sep 12, 2026 at 7:30 AM

    An all-comers open race for the Forest Park Cross Country Festival. Come run in this unique event in the beautiful Forest Park, and stick around to see some of the Midwest's top high school cross country talent!

    5kRun via RunSignup
  • Distance: 5.7 km
    Sat, Sep 12, 2026 at 8:00 AM

    Get Ready for the 5th Annual Duo Dash 5K & 1-Mile Dog Walk!

    Mark your calendars — the Duo Dash is back! Lace up your shoes, leash up your pups, and join us for a day of fun, fitness, and fundraising, all to benefit Duo Dogs.

    This year’s race is extra special as we’ll also be celebrating Duo Ambassador Dog Barclay’s 8th birthday at the Dash!

    Help us make Barclay’s birthday extra sweet by bringing a donation to the race:

    • New hard dog toys (all ages)

    • Dog training treats (Zuke's or Charlee Bear preferred)

    • Coconut Oil

    • Round cotton pads

    • Head to our wishlist for more ideas.

    Teams are encouraged to set up fundraising pages for their dogs and compete in a friendly contest for ultimate bragging rights — who will be crowned the highest fundraiser?

    Whether you’re running, walking, or cheering from the sidelines, it’s going to be a paw-some day you won’t want to miss!

    Both races will start inside the park at the Son's of Rest Shelter.

    Sign up by August 21st to guarantee a shirt.

    Packet pick-up will be on Thursday, September 10, from 4-8 PM, and Friday, September 11th, from 12-6 at Duo Dogs.

    There will be no packet pickup on the morning of the race.

    10955 Linpage Place St. Louis, MO 63132

    If attending with your dog, please email proof of vaccinations for Rabies (dogs four months and older), Parvo/Distemper Combo, and Bordetella to [email protected] by September 1st.

    See full details
    1 Miles3.1 MilesRunWalk via RunSignup
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