Cassie Kottke

Appleton, Fox cities, Midwest

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Certified Since January 2010
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Cassie Kottke

Cassie Kottke has been practicing ChiRunning for 10 years and started teaching ChiRunning in 2009. She is the owner of Stride Multisport, an endurance and personal training studio in Appleton, WI. She is also a certified Life Coach and the owner of Cassie Rae Coaching.  Cassie has over 16 years of personal training and coaching experience and is an avid endurance athlete completing 10 Ironman triathlons and close to 100 marathons and ultramarathons. Cassie’s recent accomplishments include finishing seven 100 mile ultramarathons including the Leadville Trail 100, a finish at the Georgia Death race, a 50k overall female winner at the Kettle in 2017, and the overall female winner of the Tuscobia 80 mile winter ultramarathon in 2017!
Before finding ChiRunning, Cassie struggled with injuries. She had tried everything from stretching, crosstraining, massage, and expensive shoes but running would inevitably cause her discomfort. Since learning ChiRunning in 2007, Cassie has not had a running injury.
“ChiRunning has been my miracle! I would not be putting on the miles that I am without it! It has been my pleasure over the last few years to see the ChiRunning technique work it’s magic on the clients and athletes that I work with!”

Workshops and Private Sessions with Cassie Kottke

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Workshop Type Date Location Details
  Half Day ChiRunning Workshop 04/11/2020 Appleton, WI
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Personal Bests

Distance Completion Time Placement Race Name / Location Year
Ultra Marathons

Race Resume


Ultra Marathons



Ultra Marathons