Kilian Jornet: 11 Training Principles for Trail Runners
Kilian Jornet: 11 Training Principles to Improve Your Trail Running
We've all had this thought: "Just tell me exactly what Kilian does, I'll do the same, and I'll crush it."
Except… the point isn't to replicate his workouts. The point is to understand the principles that structure his training, because these principles are transferable.
In his article "My 2022 season Training and Racing," Kilian shares a very rare insight: his preparation strategy for a season where he linked Zegama, Hardrock, and UTMB.
On the Agenda
- Kilian Jornet's 11 Training Principles
- 2 Inspirations from the GOAT
- A Scientific Insight into Polarized Training
- Bonus: Kiki's Signature Workout
- Key Takeaways
Kilian Jornet's 11 Training Principles
1. Consistency as the Main Driver
Adaptations come from repeated stimuli over time. It's consecutive weeks, not the perfect single workout, that build progress. Consistency forges fitness.
2. Always Individualize
The same workout never produces the same effect depending on history, profile, sleep, stress, or terrain. Training becomes more effective when adjusted to the individual, not copied without context.
3. Adapt Training to Real Life
Constraints are part of the framework. Short or medium sessions, adapted schedules, differently distributed volume: the key is to work with your reality while maintaining a clear direction.
4. Give Each Session a Clear Purpose
Every session responds to a precise intention. Metabolic, muscular, technical, or mental: the objective guides the content. Intensity becomes a means, not an end.
5. Learn Through Field Testing
Benchmark routes, often uphill, serve as reference points. Run under comparable conditions, they allow you to track fitness evolution and precisely adjust training.
6. Adjust Intensity to Volume
When volume increases, intensity becomes more costly to assimilate. Priority goes to volume, while quality is adjusted to preserve recovery and progress.
7. Make Recovery a Pillar
Sleep adapts to individual needs. The environment is optimized. Easy days find their place when the body is less receptive. Recovery supports daily training.
8. Resume Training Post-Race at the Right Time
Restarting occurs when three signals are green: aches subside, metabolic fatigue decreases, and the desire to run naturally returns.
9. Leverage Nutrition for Progress
Paying attention to daily nutrition improves both performance and recovery. A solid foundation that supports the entire training process.
10. Shift Pressure Towards the Process
The result becomes an indicator, a validation of the journey taken. Attention shifts to the quality of work, consistency, and overall coherence.
11. Anticipate and Adapt
The essentials are prepared in advance: nutrition, gear, route. The rest is managed in the moment, with the ability to adapt to the vagaries of the terrain, body, and conditions.
2 Inspirations from the GOAT
A Scientific Insight into Polarized Training
When we talk about "effective" endurance training, one model often comes up: a lot of low intensity + a little high intensity (the "polarized" approach).
In a 9-week controlled study with trained endurance athletes, the "polarized training" group showed greater improvements in key performance variables (including VO₂peak) than "threshold" or "high volume" approaches alone.
Real-world translation: the base isn't wasted time. It's the foundation that makes intensity "profitable"… and sustainable.
Bonus: Kiki's Signature Workout
For demanding formats (long ultras, significant elevation gain, repeated effort), Kilian uses simple yet highly targeted workouts, directly transferable to trail running.
1. Uphill Muscular Resistance
Find a steep climb (25–35% grade), 500 to 750m (1,600 to 2,500 ft) D+.
Perform 2 to 3 ascents:
- 1st repetition ≈ 85% VO₂max
- Subsequent repetitions ≈ 75–80% VO₂max
- Recover on the descent
👉 Objective: learn to sustain high effort uphill despite fatigue, without blowing up.
2. Specific Uphill Strength
On a very steep and long climb (30–35% grade, 300 to 700m (1,000 to 2,300 ft) D+).
Alternate every 3 minutes:
- Fast cadence / short strides → cardio work
- Slow cadence / powerful strides → strength work
👉 Objective: develop muscular power useful for long ascents.
Key Takeaways
- ✔️ Don't copy workouts → copy principles.
- ✔️ Your best strategy = consistency + individualization + recovery.
- ✔️ If you want to "be like Kilian": focus mainly on his #1 point… years of consistency.
— Antoine, Baptiste and Etienne from TRL