Georgetown to Idaho Springs Half

Saturday, August 8, 2020
Colorado at its Best! Run a PR at one of Colorado's oldest half marathons!
42nd Annual GTIS HALF
August 8, 2020
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Part of the Colorado Mountain Half Series, the Georgetown to Idaho Springs Half Marathon is one of the most pleasurable races in the western U.S.


The GTIS Half is a Colorado Runner's "Must-Do!" Enjoy breathtaking views along Clear Creek as you traverse a scenic and gently rolling mountain course that winds down the Clear Creek Valley. Start in Georgetown where the elevation is at 8,500 feet, and gradually run along the frontage road that runs parallel to, but well away from I-70. Arrive in Idaho Springs at an elevation of 7,500 feet at the finish. Enjoy a post-race celebration at Clear Creek football field in Idaho Springs with vendor booths, refreshments, finisher medals, award ceremony, oh and gorgeous Colorado mountain scenery. This is Colorado at its best!



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Three of Colorado's original and most beloved half marathons have teamed together to create the Colorado Mountain Half Series!

Join us for the Estes Park Half Marathon (part of the Estes Park Marathon Weekend) on 6/21/20, Georgetown to Idaho Springs Half Marathon on 8/8/20, and Ned*Ned Half Marathon on 9/12/20. All three events are community organized and benefit important youth programs within each respected community.  Come back “home” and support the original iconic half marathons of Colorado. Enjoy the ultimate running experience for athletes of all abilities and get inspired to take on the 39.3 miles of sure magnificence. 

Colorado Half Mountain Series participants will enjoy 15% off each event, custom series finisher medal, awards ceremony for overall finishers and age group categories, and an opportunity to purchase discounted Colorado Mountain Half Series branded gear. ​​Run your tranquility this summer!





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COVID-19 UPDATE: We are continually monitoring the recommendations from Federal and State Guidelines on holding events and gatherings. We look forward to hosting another great event on August 8, 2020. However, your safety is our number one priority and we will make changes if needed.

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