Event details subject to change. Please confirm all information via event website.
Week of Events
Sunday, August 16, 2026
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August 16, 2026 -Erie Half & 5K
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August 16, 2026 -Outdoor Divas Triathlon
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August 16, 2026 -Leadville Trail 10K
Erie Half & 5K
Join us for the Erie Half and 5k! The Hometown Race Series features half marathons and 5k distance events in outlying communities outside the Denver and Boulder metro areas. LOOK UP! At the Erie event, we often see the early morning skies with dotted with delightfully colorful hot-air balloons. Whatever distance you're ready to tackle, […]
Outdoor Divas Triathlon
The Outdoor Divas Sprint Triathlon on August 21st, annually awarded best women's event in Colorado by Competitor Magazine, is the all women's triathlon you've been waiting for! We intentionally keep the race cap low at 600 women to create a fun, festive, yet intimate racing environment. Great goodie bags, one of our biggest expos of […]
Leadville Trail 10K
This out-and-back course uses the first and last 3.1 miles of the LT100 Run course, featuring paved and dirt roads. Held the weekend of the historic Leadville Trail 100 MTB, the Climax Molybdenum Leadville 10K Run is the shortest run in the series, but covers the first and last 3.1 miles of the infamous Leadville […]
Monday, August 17, 2026
No events on this day.
Tuesday, August 18, 2026
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August 18, 2026 -Into the Hills Eltuck 5K
Into the Hills Eltuck 5K
Join us each Tuesday evening in August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races designed to give newer trail runners an opportunity to dip their toes into the trail racing waters, and to offer more experienced trail racers a chance to sharpen […]
Wednesday, August 19, 2026
No events on this day.
Thursday, August 20, 2026
No events on this day.
Friday, August 21, 2026
No events on this day.
Saturday, August 22, 2026
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August 22, 2026 -Leadville Trail 100
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August 22, 2026 -Staunton Rocks! Trail Marathon
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August 22, 2026 -Byers Peak Stampede
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August 22, 2026 -Arrowhead Half Marathon
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August 22, 2026 -Ram Run 5K
Leadville Trail 100
The legendary “Race Across The Sky” 100-mile run is where it all started back in 1983. This is it. The race where legends are created and limits are tested. One hundred miles of extreme Colorado Rockies terrain — from elevations of 9,200 to 12,600 feet. You will give the mountain respect, and earn respect from […]
Staunton Rocks! Trail Marathon
Welcome to the Staunton Rocks! Marathon & Half Marathon, an event put on by trail runners for trail runners on August 28, 2021. Touring the renowned singletrack of Staunton State Park in Colorado’s Front Range Mountains southwest of Denver, the race will take you back in time as you glide by historic buildings and old milling operations.
Byers Peak Stampede
Leave the pavement behind and hit 100% unpaved roads and trails in the breathtaking Rocky Mountains—just an hour from Denver. Whether you’re tackling the Half Marathon or joining in on the 5K, you’ll enjoy challenging terrain, fresh mountain air, and jaw-dropping views at every turn. All abilities are welcome, from first-time racers to seasoned trail […]
Arrowhead Half Marathon
The Vail Recreation District is excited to announce a NEW venue for one of our favorite events in the 2021 Dynafit Vail Trail Running Series - The Dynafit Half Marathon and 5K at Arrowhead in Beaver Creek on August 21st.
Ram Run 5K
Come join in the celebration of the resurgence of a great community event. The Ram Run will be returning to it's traditional month. This fun and exciting event will include a 5k around the neighborhoods near Green Mountain High School. Proceeds will help benefit the Green Mountain High School Cross Country Team. The first 150 […]
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