Terrain Execution Analysis (TEA)
TEA shows how well you ran the terrain, not just how fast. It looks at one run at a time and explains what happened on the route, where it happened, why it happened, and what held you back most.
Fitness sets your potential. Execution decides the outcome. Two runners with the same fitness can run the same trail very differently. TEA explains that difference.
Where to find it
Open the Session Intensity Lab, pick a run (trail and hilly runs work best) and open the Route Lab tab. The TEA panel sits next to the map. Tap How to Read in the panel for a quick reference.
How it works
TEA uses the run's detailed data streams: GPS position, distance, elevation, speed, heart rate, cadence and power (when available). It cuts the route into short segments (the panel shows the segment length, for example 150 m) and analyses each one on its own: what the terrain asked of you, and how you responded.
It looks at:
- climbing efficiency
- descent execution
- cadence stability
- pacing control
- heart-rate cost relative to the terrain
- terrain-specific limits
Reading the panel
- Terrain Execution Score: how effectively your available fitness was turned into forward progress across the terrain. 90–100 Excellent, 80–89 Good, 70–79 Moderate, 60–69 Limited, below 60 Significant losses.
- Terrain Demand: how hard the route itself was: gradient, elevation change, how often the terrain changes, technical sections and conditions. It does not depend on you.
- Execution Quality: how well you managed that demand, from Controlled (steady effort, pacing and form) to Limited (clear efficiency losses where the terrain asked more than you could hold that day).
- Primary Limiter: the one thing that held you back most, for example climb pacing. Other limiters include aerobic capacity, muscular endurance, fuelling, running mechanics, technical skill and conditions such as heat or altitude.
- Confidence (the badge next to How to Read): how sure TEA is. High means several signals agree. Low means limited data, so read the result with care.
- Terrain Leaderboard: your best climbing segment, your hardest segment and the first segment worth reviewing.
- Evidence summary and Route story: how many climbs, descents and strained segments there were, and a short story of how the run went.
The map
Every dot on the route is one segment, coloured by terrain and execution:
| Colour | Meaning |
|---|---|
| Green | Runnable terrain |
| Orange | Climb |
| Dark orange | Steep climb |
| Blue | Descent |
| Dark blue | Steep descent |
| Amber | Review / moderate issue |
| Red | Strained / clear limiter |
Tap Max Map for a full-screen view, and switch map styles (Tracestrack, Standard, CyclOSM, Cycle or 3D terrain). The elevation profile underneath shows where each segment sits on the route.
One segment, or several
Tap a segment to see its analysis: distance, grade, elevation gain, cadence, heart rate, power and speed, your actual pace against grade-adjusted pace (GAP), its state and limiter, the evidence behind it and a coach note.
Tap Add to selection on several segments, for example a whole climb, to see their totals and averages together.
What TEA is not
TEA is not a fitness, readiness, fatigue or race-prediction score. It rates how you executed the terrain on this run. It explains what happened; what to train next stays with the rest of Montis: Performance Intelligence, ESPE and the Adaptive Decision Engine.
A lower score usually points to something you can improve: climbing rhythm, cadence, pacing, descending or fuelling.