2026 Dates:
April 8, 15, 22, 29
May 6, 13, 20
Weather Make Up Date: May 27
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Chatfield Time Trial Series
Come ride with Team Cobras this Fall! Join our three-week series on September 9, 16, and 23, 2026, featuring an 11.2-mile course with 336 feet of climbing. Last year was a huge success—riders absolutely loved the wide, smooth shoulders and great course design. Be part of the fun!
Consider being a Volunteer!
(and race for free!)
Become a Vital Part of KHMTT
Volunteering as a marshal at the Karen Hornbostel Memorial Time Trial is not just about being part of an event; it’s about ensuring safety and contributing to the success of every race.
Role of Marshals
Marshals play a crucial role by managing racecourse safety, guiding participants, and providing essential support throughout the event.
Why Volunteer?
Volunteering offers a front-row seat to the excitement and a chance to contribute to the community while ensuring a safe environment for all. Plus you or a friend can race for free!
What is a Time Trial?
Understanding Bicycle Time Trials
A bicycle time trial, often referred to as ‘the race of truth,’ challenges cyclists to race against the clock on a set course, with each participant starting individually at different times. This format not only tests one’s endurance and speed but also their ability to pace themselves throughout the race without the benefit of drafting behind other competitors.
Why Participate in the Karen Hornbostel Memorial Trial Series?
The Karen Hornbostel Memorial Time Trial Series at Cherry Creek State Park offers a unique opportunity for cyclists of all levels to test their mettle in a professionally organized setting. Participating in the Karen Hornbostel Memorial Time Trial Series allows you to set personal goals, improve your cycling skills, and enjoy the camaraderie of the cycling community in a picturesque environment.
Exclusive Benefits of the Karen Hornbostel Time Trial Series
Being part of the Karen Hornbostel Time Trial isn’t just about the race; it’s about experiencing a well-supported event that prioritizes cyclist safety and community engagement. With a wide variety of competitive categories, and the beautiful backdrop of Cherry Creek State Park, the Karen Hornbostel Time Trial Series offers a racing experience that is as rewarding as it is challenging. Plus, you are supporting Bicycle Colorado and bicycle racing in Colorado.