Know
the Trail.
Before You Run.

Upload your race GPX and get science-backed critical zone alerts — where to walk, where to protect your legs, and where to push.

📂

Drop your GPX file here

or click to browse — .gpx files only

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🗺️ Route Overview

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Distance

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Elevation +

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Elevation −

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Critical Zones

Elevation Profile

📊 Terrain Analysis

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Minetti flat-equivalent ratio

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Effort Distribution

— Runnable terrain

— Moderate uphill

— Walk zone (≥10%)

— Moderate downhill

— Steep descent (≤-15%)

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Walk zones

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Vert per km

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Flat equivalent

Critical Zones

Based on Minetti's energy cost model for gradient running.