Race Power Calculator Requirements

How do I get an accurate race prediction using Stryd's race power calculator? Why is my race power calculator wrong?

Updated over a week ago

Your running data from the last 90 days need to meet the following requirements:

You must have:

  1. A valid racecourse uploaded via PowerCenter

  2. At least 1 workout conducted around your Critical Power

  3. At least 1 workout conducted around the intensity for your target race distance

  4. An accurate Model Curve on your Power Duration Curve that extends from the 10-minute duration to the 20-minute duration.

    1. Note: This means that you must have a well-balanced Power Duration Curve and max efforts around the 10 to 20-minute duration. For example, a max effort in the 7-minute duration would be effective in modeling your 10-minute duration and a 25-minute activity would be effective in modeling your 20-minute duration. Alternatively, a max effort in the 15-minute range may also effectively model your capability from the 10 to 20-minute duration.

  5. Have an accurate Critical Power

    1. Note: If you use auto-calculated Critical Power, your auto-calculated Critical Power likely will be accurate if you meet requirement #3 by having a maximum effort near the 10-minute duration and the 20-minute duration.

If you encounter an error called Not Enough data, please see this support article: Race Power Calculator: Not Enough Data

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