Performing a Guided Test to Determine Your Lactate Threshold

Before you can perform the guided test, you must put on a heart rate monitor and pair it with your device (Pairing ANT‍+® Sensors). You must also have a VO2 max. estimate from a previous run (About VO2 Max. Estimates).

TIP: The device requires a few runs with a heart rate monitor to get an accurate maximum heart rate value and VO2 max. estimate.
  1. Hold UP.
  2. Select My Stats > Lactate Threshold > Do Guided Test.
  3. Select an outdoor running profile.

    GPS is required to complete the test.

  4. Follow the on-screen instructions.