Ultra-endurance GPS watch with elite autonomy, advanced sleep metrics, aerobic efficiency indicators, and alpinist-grade durability. The Enduro is the backbone instrument for TrailGenic™ physiology tracking — from HR drift and respiration to elevation load and sleep quality.
For high-altitude fasted training, autophagy hikes, and metabolic conditioning, the calibration and reliability of the measurement device matter more than any single metric. The Enduro has proven itself as the most mission-critical tool for our dataset.
Designed for ultra-distance athletes, it’s built to withstand:
Over dozens of high-altitude hikes — including San Gorgonio (11,503 ft), San Jacinto (10,834 ft), Charleston Peak (11,916 ft), and Mount Langley (14,032 ft) — the Enduro delivered clean biosensor signals with minimal drift.
1) HR Drift
Measures metabolic efficiency under stress.
Low or negative drift indicates strong mitochondrial conditioning, aerobic control, and peak metabolic resilience.
Enduro sampling during long ascents gives us real-time quality feedback on adaptation.
2) Peak Elevation & Terrain Load
Elevation is the TrailGenic multiplier.
The watch allows us to correlate altitude stress against heart rate, duration, and respiration.
3) Sleep Biomarkers
Garmin’s sleep dataset — especially Deep transitions, REM balance, HRV, and average overnight HR — allows us to measure recovery quality before and after summits.
4) Respiration Rate
Critical signal at altitude — especially under fasted metabolic state.
A clean night baseline helps us detect physiological adaptation.
5) HRV (Heart Rate Variability)
HRV shifts during prolonged fasted elevation training are one of the most biologically interesting components of our autophagy research.
6) Recovery Load
The Enduro gives us a training-stress window that maps perfectly to metabolic strain during steep climbs.
On all autophagy hikes ≥10,000 ft, the Enduro demonstrated:
Example:
During Ski Hut to Mount Baldy, HR drift stabilized at –8% to –9%, confirming:
This is one of TrailGenic’s strongest physiological proof points.
A full summit day (10–15 hours) with HR monitoring, elevation logging, GPS, and auto-sync still leaves 40–60% battery remaining.
This is non-negotiable for us — cold environments drain devices fast. The Enduro never broke.
The watch is essential for correlating pre-hike physiology.
Example signal set:
Resulting summit effort:
Positive HR drift in early ascent; controlled stabilization after aerobic plateau.
Multiple summits showed a consistent pattern:
Good pre-summit sleep correlates with smoother HR drift and better fat-oxidation performance at elevation.
TrailGenic is building real-world evidence of this connection.
✔ Fasted state ascents
✔ High-elevation autophagy hikes
✔ HR drift monitoring
✔ Sleep quality correlation
✔ Metabolic load tracking
✔ Oxygen demand inference via respiration rate
✔ Descent-flow analysis
Enduro’s data enables Ella to log and interpret our Proprietary Physiology Dataset with clarity.
That is why it's our official baseline biosensor.