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Running step-test protocol: determine lactate threshold in pace

KH
Kristian Hoffmann
Founder, LactateThreshold
2 min read

Running protocols are more sensitive than cycling protocols because pace, surface and sampling must be controlled carefully.

The running protocol in the guide

A treadmill simplifies control of speed and blood sampling. Outdoors, use a flat route or track and keep pace very steady.

  • Warm up easily for 10–15 minutes
  • Start clearly below ordinary easy-run pace
  • Hold stages for four to five minutes
  • Increase by 0.5 km/h or 15–20 seconds/km
  • Sample at the stage end without a prolonged pause

Choose and retain one setting

A treadmill is often easier to reproduce over multiple tests. Outdoor testing is more race-specific but less controlled. The original article makes keeping the same environment a priority for tracking changes.

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Balance workload increments and test length

Large speed jumps leave fewer useful points around the threshold. Very small jumps make the test unnecessarily long. The source uses 0.5 km/h or 15–20 seconds/km as a practical compromise for many runners.

Interpret pace together with the event

Enter the speed or pace and corresponding lactate at each stage. The resulting LT1 and LT2 pace estimates can anchor zones; race pacing still needs to account for current capacity and the event distance.

Start lactate test analysis directly

If you already have values, go to the central analysis page or start the demo with example data.

Analyze your values PDF protocol

Why you can trust the analysis

LactateThreshold does not turn measurements into false precision. The app shows the curve, method comparison, plausible thresholds and the limits of your test protocol transparently.

Read methodologyDisclaimer
Method comparison instead of a single black-box value
Clear separation of LT1, LT2, VLamax and training zones
Limits of self-testing are stated openly
Training guidance, not a medical diagnosis

Frequently asked questions

Can I perform the running test alone?+
A treadmill can work if you can operate the meter and sample safely. A helper is preferable outdoors, where holding pace and sampling compete for attention.
How easy should the first stage be?+
Start at a pace that allows comfortable conversation. The guide discusses 90–150 seconds/km slower than known 10-km pace as a rough starting example.
Should the treadmill be set to 1%?+
The original guide calls 1% a common setting to approximate some missing air resistance. Keeping the same incline for repeated tests is more important than assuming one exact universal setting.

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