Muscle groups Used In Triathlon: Swimming, Cycling, Running

Anatomy-of-cycling-leg-muscles — Source: https://www.cyclingforums.com

Or Look at this

Then a short Running Muscle Clip:

Source https://web.archive.org/web/20150926145156/https://swimtoslim.com/wp-content/uploads/2010/11/muscle-groups1.jpg — Source https://swimtoslim.com/wp-content/uploads/2010/11/muscle-groups1.jpg

Last Updated on 13 January 2026 by the5krunner

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the5krunner

tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.

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