Charles (Mac) Cassin
Charles (Mac) Cassin 1991 Have a Question? - Contact Me Contact Me

Charles (Mac) Cassin   1991


Boulder, CO
United States



Sport Types

Triathlon, Road Cycling, Mountain Biking, Cyclocross, XTERRA, Cross Country Skiing, Mountaineering, Speed Skating, Adventure Racing

Preferred Athlete Levels

Beginner, Intermediate, Advanced, Professional


Mac specializes in time-crunched athletes and those recovering from significant injuries, two factors that have continuously played a roll in his own training.

In addition to one-on-one coaching, Mac also offers customized plans ranging from 3 months to 12 months in length for those who want optimized training without the greater commitment of monthly coaching.

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Mac Cassin is the Chief Cycling Physiologist for the Sports Science Division of Wahoo Fitness. He holds a degree in Integrative Physiology from the University of Colorado-Boulder and has won multiple National Championships on the Velodrome.

The experience of juggling athletic goals with collegiate and career responsibilities has taught Mac that peak performance is achievable even for those who cannot focus exclusively on training.

While concentrating on exercise physiology in an academic setting, Mac competed at the World Championships, Pan American Championships and World Cups on both the road and track.


1-on-1 Coaching, Consultations, Remote Coaching, Strength Training, Training Camps, Biochemical Analysis

Athlete Requirements

Athletes who are willing to train hard and rest harder.

Have a question? Contact me.

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Boulder, CO
United States