Experience the Best Half-Marathon in Denver

Join us on race day for an exciting and memorable 13.1 and post-race party!

Join Us for Denver’s Oldest Half-Marathon

Lace up your running shoes and get ready to join us for a truly unforgettable adventure at the oldest half-marathon in Denver, Colorado. Registration is now open for our upcoming 2025 half-marathon, so whether you’re a seasoned runner or a newcomer to the sport, this race is for you.

Are you ready to challenge yourself, push your limits, and become a part of a vibrant and passionate running community? Let’s do this!

2024 Platte River Half- Marathon Course Map

A Thrilling Out-and-Back Course Awaits You

The Platte River Half Marathon & Relay takes place on the scenic Platte River Trail in Littleton, just outside of Metro Denver, offering runners stunning views of the Rocky Mountains and the city skyline in the distance. The course starts and ends at Reynold’s Landing trailhead parking lot near the famous Breckenridge Brewery, where you will enjoy a post-race beer garden celebration.

With a total ascent of around 300 feet, this out-and-back course is sure to challenge and delight runners of all ages and abilities. Are you ready to experience the best of both worlds on this scenic journey? Join us for a memorable run through Littleton, Englewood and Sheridan.

Enjoy the Perks of Running the Platte River Half

Running the Platte River Half Marathon & Relay comes with fantastic swag you won’t find anywhere else! All participants will enjoy perks like:

Long Sleeve Tech-T

Finisher’s Medal for Each Runner

HydraPak Collapsible and Reusable Speed Cup

E-Goodie Bag

Free Beer and Hard Seltzer at the Post-Race Party

Free Downloadable Race Photos

Cheers to Victory at the Breckenridge Brewery Beer Garden

After crushing the Platte River Half Marathon & Relay, it’s time to celebrate your victory in style! Join us at the renowned Breckenridge Brewery for a family-friendly post-race party, where you’ll enjoy live music, food trucks, games, and, of course, plenty of refreshing beer and warm sunshine. Let’s celebrate your triumph at the Breckenridge Brewery beer garden — a Colorado tradition that runners look forward to year after year. You won’t want to miss this epic post-race party!

What to Expect on Your 13.1-Mile Journey

Get ready to tackle our 13.1-mile out-and-back course with confidence! Here are some things to keep in mind:

The race starts bright and early at 7 am in the Reynold’s Landing trailhead parking lot next to Breckenridge Brewery. Finish line support will close at 10:30 am.

Our amazing volunteers will man five aid stations along the route, providing you with water, Gatorade, Honey Stinger Gels and Chews, and more!

We’re going cupless! All race participants will receive one HydraPak collapsible and reusable speed cup to clip, carry, or stash during the race and hydrate at aid stations.

The half-marathon is limited to 2,900 half-marathoners, so be quick! Register for the race today to save your spot!

Ready to Conquer Denver’s Oldest Half-Marathon?

Are you excited to take on this beloved race? The oldest and most popular half-marathon in Denver is waiting for you! Whether you’re a seasoned pro or you’re new to the sport, this is an experience you don’t want to miss. Join us on race day and become part of a vibrant community of passionate runners! Secure your spot today and get ready to cross that finish line with us. Let’s make this an unforgettable adventure together!

Our Sponsors

Interested in Sponsorship opportunities with the Platte River Half Marathon & Relay? Become a Sponsor