🏃‍♂️ Zone-Adjusted GPX/TCX Race Analyzer

🎯 Now with Training Zone Conversion!
Upload your easy Zone 2 runs to see race-pace predictions!

🎯 Zone-Adjusted Predictions

Converts easy training paces to race efforts automatically

❤️ HR-Based Analysis

Uses lactate threshold and VDOT models

📊 Smart Zone Detection

Automatically detects your training zone (1-5)

🚀 Race Pace Conversion

Zone 2 → 25% faster race predictions!

Upload your GPX or TCX file to get zone-adjusted race predictions. If you ran an easy Zone 2 aerobic base run, the system will predict much faster race times by converting to race-specific effort levels!

📁 Drag & drop your GPX or TCX file here or click to browse

🔄 Analyzing zones and adjusting predictions...