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meet the team

Our coaches
 

Jan gremmen

Triathlon/Endurance Coach

Jan is the founder of the team. He is a 6 times Full Distance Triathlon (3.8km swim, 180km bike and 42.2km run) finisher, a 3 times Half IronMan World Champs qualifier and he finished 16 half distance triathlons so far.  After starting his coaching career in Dubai, he now resides in the Netherlands.

 

With a blend of experience and extensive studies, Jan guides his ahletes to their peak. He leverages data and feedback to understand and overcome limitations, ensuring comfortable yet steady progress towards goals.

Education/certifications

  • IronMan Coaching Certification

  • Precision Nutrition Level 1 Certification

  • STRYD Running Coach Certification

  • TrainingPeaks Essentials

  • TrainingPeaks Advanced Essentials

  • TrainingPeaks Power Certification

  • TrainingPeaks Science of Endurance Hydration

  • TrainingPeaks University

  • Endure IQ - Long Distance Triathlon 101: The Practical Application of Low Carbohydrate Performance for Long Distance Triathlon

  • Endure IQ - Long Distance Triathlon 102 - Training Program Fundamentals for Long Distance Triathlon

  • Endure IQ - Long Distance Triathlon 103 - Optimizing Long Distance Triathlon Training and Performance in the Heat

  • INSCYD - Mastering Muscular Energy Metabolism: The complete course to understand how power is composed

  • INSCYD - How to use the Power-Performance Decoder Certification

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Coach foto Maikel_edited.jpg

Maikel van haagen

Triathlon/Endurance Coach

Maikel is  a triathlon coach with 5+ years of experience racing long distance triathlons and 2 years of coaching, focused on structured, balanced, and fun training. He helps athletes of all levels achieve their goals through personalized plans based on lifestyle, level, data and goals. Whether you’re chasing a PR or finishing your first race, he is here to support your journey with consistency, clarity, and energy.

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​Coaching came naturally. to him as he loved being part of the TFDT group and seeing athletes hit their goals—sometimes even transforming their lives in the process. That experience inspired him to help others to do the same. Triathlon has taught him a lot too: time management, efficiency, and how to channel energy with purpose.

 

As a coach, his goal is to make a meaningful impact. and truly believes that through consistency, fun, and balance, athletes can reach their full potential—both in sport and in life.

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Education/certifications

  • IronMan Coaching Certification

  • Endurance Sports Coaching Institute (ESCI)

  • TP level 1 in progress

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