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Boulderthon: Downtown Boulder Marathon & Half Marathon

October 7, 2023

Boulder, CO

Come join us in beautiful Boulder, Colorado for the Boulderthon: Downtown Boulder Marathon & Half Marathon on October 7th, 2023. Experience the stunning views of the Rocky Mountains while running the full or half marathon. Don't miss out!
Come join us in beautiful Boulder, Colorado for the Boulderthon: Downtown Boulder Marathon & Half Marathon on October 7th, 2023. Experience the stunning views of the Rocky Mountains while running the full or half marathon. Don't miss out!
Participants run the half marathon Boulderthon: Downtown Boulder Marathon & Half Marathon in Boulder, Colorado in October!
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About The Boulderthon: Downtown Boulder Marathon & Half Marathon

The Boulderthon: Downtown Boulder Marathon & Half Marathon is a fantastic race for those looking for a scenic and challenging run. The half marathon takes runners on a 13.1-mile loop that starts in downtown Boulder, winds through the heart of the city, and then up into the foothills of the Rocky Mountains. Along the way you’ll get to take in sweeping views of Colorado’s majestic mountains, meander through historic neighborhoods, and enjoy plenty of fresh air with no shortage of natural beauty.

As far as weather goes, October is typically mild in Boulder with temperatures hovering around 60-70 degrees Fahrenheit during race day—perfect running conditions! This time of year also brings beautiful fall foliage which makes running this course all that much more enjoyable.

In addition to its stunning views, what really sets this half marathon apart from others is its vibrant atmosphere; it truly feels like one big celebration! Although crowds are larger closer to downtown at the start/finish line area (over 10k people gather here!), they taper off as you move away from town so there’s still plenty room to spread out and create your own pace while still getting some cheers along the way.

For those who prefer something less intense than a full 26 mile marathon but still want an unforgettable experience outdoors on one of Colorado’s most iconic courses—the Boulderthon: Downtown Boulder Marathon & Half Marathon is not one to miss out on! Whether you’re an avid runner or just starting out this race has something for everyone; breathtaking scenery coupled with friendly faces make it an event unlike any other!