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11 running events in Littleton, Colorado

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

  • South Suburban Race Series [ssprd.org] [Register at runsignup.com]

    Thu, Jan 01, 2026 at 8:00 AM

    Description

    The most family-friendly races in town! With inexpensive registration prices and optional race shirt purchases to save you money.

    The South Suburban Race Series consists of six races throughout the...

    The most family-friendly races in town! With inexpensive registration prices and optional race shirt purchases to save you money.

    The South Suburban Race Series consists of six races throughout the calendar year. Participants earn points for finishing position that go toward overall scoring. Each male and female who accumulates the most points will win prizes and be crowned race series Champion. Free to participate.

    Race Series Perks

    • Free Parking

    • Affordable Races

    • Family Friendly

    • Accurate Course Measurement

    • Plenty of Toilets

    Run

    4810 E County Line Rd., Littleton, Colorado, 80126, United States
    OpenStreetMap Google Maps
  • Super Sunday 5K [runsignup.com]

    Sun, Feb 08, 2026 at 10:00 AM

    Description

    Bring the entire family to run or walk before the big game and enjoy a post-race party at Breckenridge Brewery Farmhouse with 20% off food and beverages from 10 am-12 pm. Runners and walkers of all ages and abilities are welcome for this event along the Mary Carter Greenway.

    Show your team spirit and wear your favorite team jersey or attire.

    Race Start Time: 10:00 AM

    3.1 Miles 5k Run

    11033 Monarch Blvd, Littleton, Colorado, 80126, United States
    OpenStreetMap Google Maps
  • RMRR March Trophy Series [runsignup.com]

    Sun, Mar 01, 2026 at 9:00 AM

    Description

    Rocky Mountain Road Runners holds a monthly series of timed races in the Denver area. We provide a low-key, low-cost racing environment. Everyone is welcome to run with us!

    Our March race will be a...

    Rocky Mountain Road Runners holds a monthly series of timed races in the Denver area. We provide a low-key, low-cost racing environment. Everyone is welcome to run with us!

    Our March race will be a run around Johnson Lake at Clement Park in Littleton, Colorado. There will be a single 5k course for all racers. Please arrive by 8:30am.

    RMRR Trophy Series races use a staggered start and scoring system. We start from slow to fast, spread out over ~20 minutes. This allows almost anyone the ability to win the race. We will use your estimated time so we can assign you a start time with others about the same speed.

    After the race, have some snacks while we compile the results. We don't do a full set of awards like at higher priced races. We award the top 3 female/male, net time, in each race. We also award the top 10 members based on handicap times.

    Race Day Details

    Time: 9:00 am for the first (0:00) starters.

    Location: Johnson Reservoir, in Littleton

    Course: Two loops around the lake on paved paths.

    5k Run

    7306 W. Bowles Ave, Littleton, Colorado, 80123, United States
    OpenStreetMap Google Maps
  • Rockin on the River 5K [ssprd.org] [Register at runsignup.com]

    Sat, Apr 11, 2026 at 9:00 AM

    Description

    Dust off your well-loved t-shirts and show 'em off at the Rockin' on the River 5K! Pre and post-race music from Vinyl Nation and entertainment for all. Take in the view along the beautiful South Platte River on the Mary Carter Greenway in Littleton.

    Race Start Time: 9:00 AM

    See what the race is all about in this video!

    3.1 Miles 5k Run

    6115 South Santa Fe Drive, Littleton, Colorado, 80120, United States
    OpenStreetMap Google Maps
  • Platte River Half-Marathon, Relay & 5k [platteriverhalf.com] [Register at runsignup.com]

    Sun, Apr 12, 2026 at 7:00 AM

    Description

    Welcome to the Platte River Half Marathon, Relay & 5k race, one of the most exciting and popular races in the Denver Metro Area! This race is held annually in Littleton, CO. We’re thrilled to...

    Welcome to the Platte River Half Marathon, Relay & 5k race, one of the most exciting and popular races in the Denver Metro Area! This race is held annually in Littleton, CO. We’re thrilled to announce that registration for our upcoming 2026 event on Sunday, April 12th is open for the half-marathon and relay race. The race starts and finishes next to the beautiful Platte River Trail and adjacent to the popular Breckenridge Brewery campus. Join us for an epic post-race party at the Brewery with food, vendors, live music, and of course beer!

    Whether you’re an experienced runner looking to set a new PR, a newcomer looking to tackle your first half-marathon, or a team of runners wanting to run an exciting relay race, join us for a day of adrenaline-pumping running, scenic views, and all-around fun. What’s more, we donate a portion of the proceeds to Salute Colorado. Thank you for your support, and we can’t wait to see you at the finish line!

    Questions? Visit our race website here.

    Entry fees are non-refundable and non-transferable. There are no deferrals to future years.

    5k 13.1 Miles Marathon Relay Run Trail

    6115 South Santa Fe Drive, Littleton, Colorado, 80120, United States
    OpenStreetMap Google Maps
  • Gluten Free Gallop 5K [runsignup.com]

    Sat, May 16, 2026 at 9:00 AM

    Description

    We are so thrilled to announce the return of our annual Gluten Free Gallop 5K for its 13th year!

    Join Denver Celiacs to raise awareness of celiac disease and all gluten-related disorders. Our 13th...

    We are so thrilled to announce the return of our annual Gluten Free Gallop 5K for its 13th year!

    Join Denver Celiacs to raise awareness of celiac disease and all gluten-related disorders. Our 13th Annual Gluten Free Gallop 5K will take place at Clement Park in Littleton, CO, on Saturday, May 16, 2026, from 9:00 AM-12:00 PM. This year we will also be offering our very popular ROCK Fun Run again! This is a fun, family, stroller, and dog friendly event. This event will include food trucks, lots of samples, freebies, and kids activities!

    The 5k will be two laps around Johnson Reservoir at the Robert Clement Park in Littleton, CO. The race will begin at 9 AM sharp near shelters J, K, and L. Look for the large entrance arch and Denver Celiacs' white tent. Race registration will also be near shelters J, K, and L, and will open at 8:30 AM.

    Get your shoes, water, and sunglasses ready! The course offers scenic foothills views and a great atmosphere to relax and connect after the run!

    2.5k 5k Fun Run Run

    7306 W. Bowles Ave, Littleton, Colorado, 80123, United States
    OpenStreetMap Google Maps

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