Running

Running lactate test analysis: calculate LT1, LT2 and pace zones

Pace analysis in running is more sensitive than watts, but extremely valuable for easy endurance, threshold runs and marathon planning.

Go to lactate test analysis PDF protocol

Running protocol

A treadmill or flat course can work if conditions remain consistent.

  • Document treadmill incline
  • Record pace clearly for every stage
  • Avoid jumps that are too large
  • Measure lactate at the end of each stage

Pace zones

LT1 and LT2 are translated into min/km and help keep easy runs truly easy.

  • Recovery below LT1
  • Endurance close to but not above LT1
  • Threshold runs close to LT2
  • Check marathon pace in the context of LT1/LT2

Analyze your own lactate values

Enter pace or power and your measured lactate values. LactateThreshold calculates lactate curve, LT1, LT2, VLamax and training zones.

Start demo 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

Treadmill or outdoors?

Both can work. A treadmill is easier for repeatability; outdoors you need flat terrain and stable conditions.

Can I derive marathon pace?

Yes, but always in the context of fitness, VLamax, fueling and fatigue resistance.

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