

ABOUT STEPHEN
Stephen Treger’s path into open water coaching is rooted in service, precision, and a deep respect for the environments where swimmers test their limits. A US Masters Level II Certified Swim Coach and Instructor, Stephen has built his coaching practice around supporting swimmers not only in how they train, but in how they prepare, execute, and show up on swim day.
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Stephen’s experience extends far beyond the pool deck. He is deeply involved in the open water swimming community, offering
comprehensive support that includes crew chief services, detailed training plan development, stroke technique analysis, and in‑water support through kayak pacing and companion swims. A veteran of the sport, Stephen has completed multiple 10K marathon swims and has organized complex swim relays and travel logistics, making him a trusted partner for long‑distance and open water athletes navigating both physical and logistical challenges.
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In Southern California, Stephen is regularly hired as paddle support for demanding training swims in places like La Jolla and for Around Coronado Island. He gives back each season by working water safety and volunteering as a Swim Buddy at local events, reinforcing his belief that strong swim communities are built on shared responsibility and care.
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Stephen’s coaching philosophy centers on meeting swimmers exactly where they are. His clients range from adults learning to swim to experienced open water and triathlon athletes seeking greater efficiency and confidence. Testimonials frequently highlight his ability to refine technique, personalize preparation, and create calm, supportive environments where swimmers can progress with clarity and purpose. Committed to accessibility, along withe Sidney, Stephen offers a free weekly in‑person coached open water masters‑style workout, reflecting his belief that high‑quality coaching should be available to all.
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Through Swim Open Waters, Stephen helps swimmers build skill, confidence, and trust in themselves, in the pool, the ocean, and everywhere their swimming takes them.
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USMS Level 2 Masters Coach
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National Ski Patroller
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CPR/AED and First Aid
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To book Stephen, contact treger@gmail.com.
Certifications
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Naples Island 3 Miler - Numerous
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La Jolla Roughwater Gatorman - Numerous
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Catalina Relay - August 2023
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El Cruce 10km - May 2024
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Ironman Santa Cruz 70.3 - September 2025
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Catalina Relay (tandem) - September 2025
Accomplishments

