Author: Jens Waechter
-
Project TF — What Three Days in Brittany Taught Me
There is a version of this post where I explain away what happened. I’m not going to write that version. Three days into a 1,000km, 17-day expedition across France, pulling a 45kg trailer, I stopped. And I want to be honest about why — and what I’m taking from it. The Medical Picture — And…
-
Project TF — Day 1: The Heat Did Not Care About My Plan
I left Roscoff this morning carrying everything I’d spent six months preparing for. The data was as good as it was going to get. The field guide was printed. The trailer was packed. What I hadn’t prepared for — what nobody could have fully prepared for — was a French heat dome sitting directly on…
-
Six Days Out
Part three: what a simulation day, a training injury, a pressured professional situation, and a taper that refuses to feel like rest have taught me in the final weeks before a 1,000-kilometer expedition The number that changed everything Zero. Not zero kilometers. Not zero pain. Zero percent cardiovascular drift across three hours and forty-four minutes…
-
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.…
-
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.…
Project Trans France '26 