Lessons from 31 Ironmans & 25 Years Coaching Triathlon: The Training Process That Builds Lifelong Endurance Athletes | Expert Series 13 | Joserra Callen, Sports Scientist, IRONMAN University Teacher

What does it take to complete 31 Ironman races and coach endurance athletes for over two decades?

In this Expert Series episode, we sit down with Joserra, a Spanish triathlon coach, Ironman team member, and sports science professor who has been shaping the endurance sports landscape since 2001.

With credentials including an Ironman Certified Coach certification, a Master's in Applied Medical Sciences to Sport, and professorships at top Spanish universities teaching training theory and sports nutrition, he brings both academic rigor and real-world experience to every conversation.

Joserra breaks down his unique "training process" approach, emphasizing that coaching is about far more than just prescribing workouts. He reveals why communication with athletes matters more than training zones, how he identifies fast versus slow responders to training stimuli, and why health must always come before performance.

Key topics include race-specific pacing strategies for hilly 70.3 courses, practical nutrition guidance for Ironman distance events, the mental game of long-distance racing, and why patience is the most underrated quality in triathlon. He also shares inspiring coaching stories, including helping his wife qualify for Kona in her first four Ironman races and guiding a Canadian athlete to her lifelong dream after five years of commitment.

Whether you're a coach refining your methodology or an athlete seeking sustainable approaches to endurance sports, this conversation delivers actionable insights on training, nutrition, longevity, and the "carpe diem" mindset.

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Connect with Joserra

• Website: https://joserra.training
• Instagram: @coach_joserra

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Hosted by Bruna (@justbrunathings) and Fabi (@endurance_fabi), founders of augo and coaches at Jornada Endurance.