RaceMob

Upcoming Denver, Colorado Half Marathon Races

View some of the best Half Marathon races in Denver, Colorado! RaceMob's race calendar allows you to find races that suits your needs. Use our advanced filters below or calendar on the right, and discover new races. We try to maintain up to date information, and rely heavily on our community of volunteers. If you find a race that we're missing, use the "Suggest Race" button on the right. Find RaceMob discounts that others have added or add deals that you've discovered.

    • 1/2M

    Conifer, CO

    27.22 miles away

    I'm Attending

    Staunton Rocks! Marathon & Half

    Welcome to the Staunton Rocks! Marathon & Half, an event put on by trail runners for trail runners. Touring the renowned singletrack of Staunton State Park in Colorado’s Front Range Mountains southwest of Denver, the race will take you back in...

    • 1/2M

    Longmont, CO

    30.39 miles away

    I'm Attending

    American Heroes Run

    The tragic events of 9/11/01 changed our nation forever. Let us not forget our proud history and those who fight everyday to keep us free. Please join us for this special day on this beautiful, flat, fast 1.05-mile loop course. The 100-mile race c...

    • 1/2M

    Winter Park, CO

    47.33 miles away

    I'm Attending

    Winter Park Half Marathon & 5K

    Push your limits with these stunning, remote races in the heart of the Rocky Mountains - located just 60 miles outside of Denver! Our Half Marathon and 5K are perfect for athletes of all levels, but will be sure to challenge you as you enjoy the b...

    • 1/2M

    Greeley, CO

    48.04 miles away

    I'm Attending

    10th Annual Superhero Event

    This is our 10th year of our Superhero Event!  We are so excited to celebrate this milestone!  We will be back at Greeley's Family FunPlex and runners can participate in person in our 10K, 5K, 1 Mile and a free kids run or they can participate in ...

    • 1/2M

    Westminster, CO

    11.2 miles away

    I'm Attending

    Pioneer Prairie Dog Half, 10k & 5k

    Welcome to the Pioneer Prairie Dog Half Marathon event; the one that started the series! With 10k and 5k events too!  The Westminster event supports Growing Home of Westminster. Growing Home is dedicated to creating a thriving and equitable north...

    • 1/2M

    Loveland, CO

    45.09 miles away

    I'm Attending

    Long View Marathon & Half

    / 1 RaceMobber Scheduled

    Showcasing a unique city-to-city trail connection, The Long View Marathon and Half Marathon runs from Fort Collins to Loveland. Together, Gnar Runners and Sweetheart City Racing bring a unique collaboration to Colorado’s running scene in this one-...

    • 1/2M

    Brighton, CO

    14.41 miles away

    I'm Attending

    Adams Half & 5k

    Right in your backyard, Adams County! If you've not visited the Adams County Fairgrounds, you're in for a treat.  Far enough from the foothills to be FLAT, but close enough to be BREATHTAKING, this course meanders past lakes and rivers on concret...

    • 1/2M

    Windsor, CO

    49.77 miles away

    I'm Attending

    Windsor Marathon, Half Marathon, 10K & 5K

    Welcome to the third annual Windsor CO Race! This event starts and ends at The Island at Pelican Lakes in Water Valley, with a great after party including a gourmet breakfast, drinks, music and a live band! Tour beautiful Windsor on a variety of t...

    • 1/2M

    Westminster, CO

    11.49 miles away

    I'm Attending

    Westy Half & 5k

    Join us for the Westy Half in October where finishers from every distance earn a MEDAL! This year's event features an out and back course from the trail entrance at Front Range Community College Library Parking Lot headed North on Big Dry Creel T...

    • 1/2M

    Brighton, CO

    14.41 miles away

    I'm Attending

    Runs With Scissors Races

    Saturday, April 8, 2023Half Marathon, Marathon and 50K all Start at 7:00 a.m. The race will be held at Riverdale Regional Park, Pavilion B, in Brighton Colorado.  Proceeds benefit INSPIRATIONFIELD.  INSPIRATIONFIELD works with the developmentally...

    • 1/2M

    Arvada, CO

    10.19 miles away

    I'm Attending

    Spring Fling Prairie Dog Half, 10k, & 5k

    The Arvada event supports Community Table, an Arvada Food bank.  Bring 5 items for donation on race day and you'll be entered into a raffle for great prizes from 3W Races and our sponsors! Welcome to the SPRING FLING Prairie Dog Half (part of the...

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