Author: Jens Waechter
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Lessons from a 22-Day Illness During Ultra-Marathon Prep
Part two: what a 22-day illness arc, a recovery week crisis, and a 54kmsimulation day taught me about preparing for a 17-day, 1,000km ultra-marathon expedition Where the first article ended The first article in this series described the architecture of a daily physiologicalmonitoring system built for a specific purpose: preparing for a 1,000-kilometre, 17-dayultra-marathon expedition.…
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Mastering Ultra-Marathon Training: A Data-Driven Approach
Training by Numbers How a daily physiological monitoring system is shaping preparation for a 1,000km, 17-day ultra-marathon expedition The problem with training by feel Most endurance athletes train by feel. They wake up, decide whether they feel good or bad, lace up their shoes, and head out the door. On good days they push hard.…
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Project Trans France: Training Through Constraint
Q&A Article Project Trans France: Training Through Constraint Reporter: Jens, the last update on projecttransfrance.info was in August 2025. How would you describe the months since then? Jens:The last few months were a mixed bag. I was dealing with an ongoing Achilles injury, which meant consulting specialists and figuring out how to keep progressing without digging a deeper…
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Project TransFrance: Summer Progress, Setbacks & Solutions
Project TransFrance: Summer Progress, Setbacks & Solutions đź“…Â August 5, 2025 It’s been a packed and productive summer since my last update on June 10. With the ferry now officially booked for 🛳️ May 27, 2026, the countdown is on. It started as a bold idea. Now it has evolved into a fully active mission. I will…
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Why I Chose TruTrak Pro for My 1,000+ km Ultra-Run
Why TruTrak Pro Is Essential for My TransFrance Project The TransFrance project—an ambitious 1,000+ km self-supported run across France at a pace of 60 km per day—is a test of endurance, discipline, and logistics. Success requires not only physical preparation but also the right technology. One of the most indispensable tools in my setup is…
Project Trans France '26 