Pace calc
Predict your race time and get a km-by-km pacing plan tailored to the course and conditions.
🏁 Race
Search for a race*
Tap to search and select a race
⏱️ Base performance
Reference race distance*
Reference race time*
Threshold pace (min/km)opt.
Critical speed pace (min/km)opt.
VO₂max (ml/kg/min)opt.
Runner level (Riegel k)opt.
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💪 Fitness & form
Weekly volume (km)opt.
TSB (training stress balance)opt.
FatiguedFresh
Days off runningopt.
Readiness score (0–100)opt.
HR drift (%)opt.
Running economyopt.
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HR above normal at paceopt.
⚖️ Weight & heat
Weight change since reference race
Only a weight gain since your reference race adjusts the prediction — not height, body fat, or absolute size. Your reference time already reflects how fit you are today.
Race-day weight (kg)opt.
Weight at reference race (kg)opt.
Same weight — no adjustment
Heat tolerance
Heat adaptationopt.
🗺️ Course
Elevation gain (m)opt.
Elevation loss (m)opt.
Climb timingopt.
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Surfaceopt.
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Course technicalityopt.
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Race altitude (m)opt.
Wind speed (km/h)opt.
Headwind fractionopt.
0%100%
Drafting / groupopt.
🌤️ Weather
Temperature (°C)opt.
Relative humidity (%)opt.
Using forecast / climate data
🎯 Execution
Planned pacingopt.
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Nutrition / carbo loadingopt.
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Hydration planopt.
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Caffeineopt.
Races at this distanceopt.
Experience level: Normal
👟 Equipment
Race shoesopt.
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Clothingopt.
🩹 Risk & recovery
Injury statusopt.
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Pain scale (0–10)opt.
Return-to-run confidenceopt.
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Altitude camp effectopt.
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