The methodology
No guesswork.
Just intent.
Just intent.
Hope is not a training strategy. WattX was built on a single conviction: every piece of data a triathlete generates should make every other piece smarter. This is how it works. Who built it — thirty years in the sport, one platform built to remove guesswork.
The problem
The triathlete's dilemma.
Your training plan lives in one app. Your race results in another. Your nutrition strategy in a spreadsheet. Your tyre pressure in your head. Nothing talks to anything. You're the one doing all the connecting — manually, imperfectly, constantly. WattX exists to end that.
On demand training
The right session.
In seconds.
In seconds.
You have 45 minutes. The pool is closed. You don't know what to do. Pick a sport, pick a training zone, pick your duration. WattX generates a precisely structured session — warm-up, intervals, cooldown — calibrated to your current threshold. Push it to your device as a structured .TCX file. No thinking required.
✓ Swim, Bike, Run & Strength sessions
✓ Recovery through VO2 Max — every zone covered
✓ Structured .TCX export direct to your device
✓ Indoor & outdoor variants
Your thresholds
Your fitness.
Always current.
Always current.
Your threshold isn't a number you set once. Set it manually, calibrate it with built-in test protocols, or let your race results recalibrate it automatically. Every test is saved — you can track your progression over time and watch yourself getting faster. Everything downstream — zones, sessions, simulator, plan — updates as your thresholds evolve.
✓ CSS, FTP & threshold pace — all three disciplines
✓ Built-in structured test protocols
✓ Race analysis with recommended threshold updates
✓ Full test history — track your progression
RACE ANALYSIS · IRONMAN LANZAROTE
Your run pace degraded 46% more in long-distance races vs short-course. This indicates a gap in muscular endurance.
Consider focusing your next cycle on long aerobic brick sessions.
THRESHOLD % 93%
78%
91%
Race day strategy
Know your race
before it starts.
before it starts.
Dial in your race strategy before you get to the start line. If your thresholds are set, WattX sets race pacing targets based on your thresholds. Adjust the sliders to explore different scenarios. Your active training plan auto-sets the distance. And your predicted splits feed directly into your nutrition strategy — carbs and fluid calculated from your actual race effort and bodyweight.
✓ Sprint, Olympic, 70.3 & Full distances
✓ WattX recommendations from textbook pacing
✓ Nutrition auto-generated from simulator output
✓ Flat, rolling & hilly course profiles
The training engine
Science-backed.
Strictly intentional.
Strictly intentional.
Every session has a purpose. Every week has a target. The WattX engine maps the precise physiological stimulus required to transform your thresholds into race-day execution — and adapts when life gets in the way.
Periodization
Structure & absorption.
Endurance is the biological response to recovering from stress. Progressive overload blocks followed by mandatory physiological deloads. CNS recovery enforced so your tissues actually absorb the work.
Flexibility
Adapts to your life.
Life isn't static. WattX replaces the rigid calendar with a fluid Session Feed. Complete sessions when you have time. If life gets in the way, trigger a smart volume adjustment to safely scale back your hours.
✓ Distance-specific physiological targeting
✓ Volume adaptation
✓ Triathlete-specific strength conditioning