How a Late Start Led to World Championships: Jerome’s Triathlon Story

In this episode, triathlete Jerome Guionnet shares his inspiring transformation from a non-competitive French parent to a world-class age-group triathlete competing in multiple Ironman World Championships. Sparked by his daughter’s interest in triathlon, Jerome began his journey in his 50s and now regularly finishes in the top 10% of his age group. He discusses the difference between exercising and structured training, the value of consistency, recovery, coaching, and cutting-edge tech like AI coaching and biometric wearables. Jerome also opens up about time management, the importance of strength training, and the surprising mental tricks that keep him going, even in low-motivation moments.Key Episode TakeawaysStarting triathlon later in life is possible with structured training and motivation.Exercising is not the same as training—purposeful structure yields results.AI tools like Athletica help with personalized insights, but coaches bring human touch and emotional intelligence.Consistency, especially with zone 2 training, is essential but often lonely.Time management includes using “bricks” (back-to-back workouts) and home trainers for efficiency.Strength training and activation exercises help prevent injury and improve running form.Transition time is a weakness Jerome plans to improve by doing more local races.Gadgets like Timeware and Cori (continuous lactate monitoring) are part of Jerome’s optimization toolkit.Training is part of a balanced lifestyle that improves work performance and mental health.Paul Warloski - Simple Endurance CoachingMarjaana Rakai - Tired Mom Runs - Where fitness meets motherhood.