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Open Water Swim coaching

Swim, bike and run with Tri-K!


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Keren Miers - Triathlon and Running Coach

Keren is an IRONMAN Certified and experienced triathlon and running coach serving the English speaking community in Japan and elsewhere. Covering all aspects of swim, bike and run training for beginners, intermediates and experienced triathletes and runners alike. Swim, bike and run with Keren! And have fun doing it!


Keren's vast experience provides a triathlon and running coaching service for athletes wanting to start off in the sport, get fit, for those aiming to boost their performance, or for seasoned competitors who want to improve their results or qualify for Kona, Boston or other major races.


Keren provides 1-on-1 personal swim, bike and run coaching, customized monthly training programs, group training sessions, off season training and Open Water Swim training. Plus seasonal training camps in Kyoto, Shimoda, Atami, Nagano, Gifu and Niseko, and race event planning and management. Keren can also provide detailed advice on where to train and the best cycling and running routes in and around Tokyo. And where to buy triathlon and running related goods and equipment or repairs from trusted, partner shops.

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Tri-K Coaching Philosophy

Consistency in training is the key to success in triathlon and running. A program of consistent and time effective swim, bike and run workouts will get you to your goals.

Keren keeps triathlon training simple by providing tailor made, carefully structured monthly training plans based on perceived effort that will fit into your busy life and give you the results that you are looking for. Your personal training program will be based on a range of Easy, Moderate and Hard efforts over a training week. Swim workouts are based on distance, with bike and run workouts time based.

Training plans can be also based on "numbers" and metrics such as heart rate and power on the bike. FTP and heart rate testing can be performed to set training benchmarks.

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Keren's Experience

Keren is a top level Age Group triathlete and runner with Championship wins and multiple podium finishes across races in the Asia-Pacific region.

Age Group Champion - 2016 Ironman 70.3 Asia Pacific Championships.

Over 28 years of competitive triathlon, running, cycling and Open Water Swimming experience since 1988. Keren has raced all triathlon distances from Sprints to Iron distance at races in Australia, the mainland USA, Hawaii, Europe, Asia and the Pacific Islands.

Completed 5 Iron distance races including the Ironman World Championship, Strongman Japan, more than 20 Ironman 70.3s (two World Championships) and other middle distance triathlons, as well as countless Standard Distance (two World Championships), Sprints and Duathlons.

10 marathons (with a new personal best set in 2016) numerous running races from 5km to 30km, as well as a great many Open Water Swimming and cycling races.

A 5 time Boston Marathon qualifier and competitor in April 2017.

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