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13 April 2026

Jonas Deichmann on 120 Ironmans in 120 Days: Planning, Preparation, Recovery & Mental Games for Maximum Performance

About this episode

Extreme athlete Jonas Deichmann knows no limits. After completing an Iron Man around the world and cycling across all continents, he's planning his next mammoth project: 120 Iron Man distances in 120 consecutive days. That means twelve hours of physical strain – daily, without a break.

What does this have to do with being a founder? More than you might think. As a founder, you're never 100% prepared either, never know what's coming next, and constantly have to deal with unexpected obstacles. Jonas shares his experiences and reveals how he manages to be mentally and physically prepared for his major projects.

Managing Gigantic Projects: From Goal to System

How do you approach a project that lasts a third of the year and pushes you to absolute physical and mental limits? Jonas' answer is structured and pragmatic. Preparation begins long before the actual start – including planning, such a project quickly takes up an entire year.

The mental component is just as important as the physical one. Jonas must not only prepare his body for extreme stress but also prepare his mind for the psychological challenge of having to "deliver" daily for 120 days straight.

Recovery Under Extreme Conditions

Stress management and recovery work differently for Jonas than for most people. While normal recovery phases disappear, he must find innovative ways to regenerate his body between stresses. Sleep, nutrition, and recovery become precisely planned elements of his project.

The challenge: How do you recover when you're at your limit twelve hours daily? Jonas has developed special strategies that are also relevant for founders who often work in similarly intense phases.

Isolation vs. Community: The Mental Balancing Act

During his projects, Jonas oscillates between two extremes: Either he's completely isolated for days or under 24/7 observation. Both situations bring their own psychological challenges.

Total isolation can be mentally exhausting, while constant attention creates pressure. Jonas has learned to deal with both situations and use them to enhance his performance.

Entrepreneur and Extreme Athlete: Two Worlds, One Person

Besides his passion for extreme sports, Jonas is also a successful entrepreneur. But how does this work when you're sometimes unreachable for 120 days? This dual role requires special planning and delegation skills.

Jonas must structure his entrepreneurial activities so they function even in his absence. At the same time, his experiences from extreme sports bring valuable skills to entrepreneurship.

The "Success Blues": After the Goal Comes Before the Goal

An often overlooked problem with major projects: What happens after success? Jonas has developed strategies to escape the "success blues" – the mental hole many fall into after reaching major goals.

His solution: After the goal comes before the goal. Through continuous planning of new challenges, he avoids the emotional emptiness that often follows great successes.

Pressure and Planning: When Moments Become Critical

Despite all preparation, there are moments that put Jonas under pressure. How does he handle these situations and how do they influence his planning for future projects?

His experience shows: Perfect preparation doesn't exist. More important is the ability to react flexibly to unforeseen situations and learn from every challenge.

Measuring and Celebrating Success Properly

For Jonas, success is more than just reaching a goal. He has developed his own metrics and learned to celebrate successes properly – without losing motivation for the next project.

The art lies in being proud of what's been achieved without resting on those laurels. A balancing act that founders must also master.

Learnings for Founders

Jonas' experiences offer valuable insights for founders: How do you set realistic but ambitious goals? How do you deal with mental stress when you're already at your physical or emotional limit? And what's the most important element for success in both extreme sports and entrepreneurship?

His answers are direct, practical, and free of marketing fluff – just like the challenges founders face daily.

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