EP 203: Squiggly Lines with Mark Lattanzi

Mar 15, 2026

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On this episode of The Project Endure Podcast, Joe Rinaldi sits down with Mark Lattanzi — adventure racer, navigation expert, and endurance athlete — for a deeply reflective conversation about resilience, problem-solving, and navigating life's inevitable "squiggly lines." Mark shares insights from more than 25 years in adventure racing, including his experiences in extreme events like the Marathon des Sables and the Barkley Marathons, and the mindset required to keep moving forward when conditions become unpredictable and unforgiving. He opens up about a recent shoulder injury after a fall on ice, the physical and mental challenges of multi-day expedition racing, and why the ability to accept reality and adapt quickly often matters more than raw fitness. Joe and Mark explore the parallels between endurance sports and life, including Mark's candid reflection on his divorce — the hardest thing he has faced — and how rebuilding self-confidence required patience, perspective, and time. The conversation also dives into the brutal lessons of the Patagonian Expedition Race, the unique navigation demands of adventure racing, and the mental resilience needed to tackle events that most people would never attempt. From breaking massive challenges into manageable steps to finding joy in the process rather than the outcome, this episode is a powerful reminder that endurance is built through presence, adaptability, and the willingness to keep solving the problem in front of you. Give this episode a listen as we dive deep into Mark's life and learn about what persistence, perspective, and endurance mean to him.

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