Calculate LT1, LT2 and pace zones precisely, whether your step test is on a treadmill or track.
Lactate threshold is one of the most useful performance markers for endurance runners. It informs marathon pace, training ranges and metabolic efficiency.
In running, lactate threshold is the pace where lactate production and clearance are still balanced. Above it, lactate accumulates and pace has to drop.
LT1 is your easy aerobic boundary. It helps keep easy runs easy and defines the upper end of true base endurance.
LT2 is close to threshold race intensity. Marathon pace is usually below LT2, while 10 km and half-marathon pace often sit near or above it.
Use your lactate values to estimate marathon, half-marathon and 10 km pacing from your own data instead of a generic table.
Recovery runs with minimal lactate accumulation.
Long runs and aerobic base building.
Tempo runs and marathon-specific work.
10 km to half-marathon intensity, high but limited duration.
Intervals and 5 km pace, maximal aerobic capacity work.
Free, no signup required. Enter values and see results immediately.
Low strip cost and app-based workflow, useful for runner self-tests.
Compact entry device, proven in running coaching.
Tiny sample volume and fast measurement, common in performance testing.
Start at an easy pace and increase every 3-5 minutes by about 20-30 seconds per kilometer. Measure lactate at the end of each stage and enter the values in LactateThreshold.
It depends on performance level. Development over time is more important than comparing one absolute pace with other athletes.
For well-trained runners, marathon pace is usually slightly below LT2 and must also consider durability, fueling and current fitness.
Lactate Scout, Lactate Pro 2, Lactate Plus and Lactate Express all work as long as they report mmol/L values.
Two to three tests per year are typical: early base phase, race preparation and after a recovery period.
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