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Your physiology, measured. Your breakthrough, earned.

Turn your tests into training, fueling and race-day preparation.

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Your tests set the starting point. Your training builds the picture.

Connect Intervals.icu to bring training history into view.

Today · Wed, Sep 23 Sample data

Training

SessionEasy run 50 m

WhyRecovery week — keep it easy

FuelMatched to the session

NextLog how it felt

Sources stay visible. Estimates stay labelled.

Different disciplines. One connected training picture.

CyclingPower-based training
RunningPace-based training
Triathlon · DuathlonA combined training plan

From test to key day.

Sport-specific targets. A connected plan.

01TestYour tests. Your thresholds. Your training profile.

02TrainPurposeful sessions — a target, a reason and the fuel to match.

03FeedbackPlanned and completed training, together.

04RacePacing, fuelling and the confidence to commit on the day.

Your physiology. In focus.

See what fuels your effort.

How carbohydrate and fat use change with intensity.

VO₂maxAerobic capacity

VLamaxGlycolytic rate

FatmaxPeak fat-oxidation intensity

LT1Aerobic threshold

LT2Upper threshold

VT1 · VT2Ventilatory thresholds

Explore the method

● Carbohydrate● Fat

EasierEffort →Harder

Schematic illustration · not a personal estimate

ⓘ

Brooks & Mercier (1994); Maunder et al. (2018).

Built for athletes and for coaches

Read from where you sit: a confident day for the athlete, a clearer week for the coach.

For athletes

Know today’s purpose. See your progress.

Targets with their sources visible.
Planned and completed training, together.
Tests and races along the way.

TrainingTestRace

Join as an athlete

For coaches

Less spreadsheet, more coaching.

Connect Intervals.icu to bring training history into view.
Put each athlete’s physiology behind the plan.
Review and adjust the plan before sending it.

Roster · 4 athletesNeeds attention

A. MoreauTestRetest

L. JansenPlanReview

M. de VriesTraining—

E. PeetersRaceEvent plan

Sample roster.

Bring your athletes

Inside the product

Your sessions, training targets and next race—in context.

The week, planned and honest

Completed, planned, missed, rest — a week that shows the real shape of the work, illness and all.

See the shape of your training. · Sample data

● Completed▯ PlannedIllustrative view

Planned work. Recorded sessions. Week by week.

The plan, readable in one look

Threshold 3×12 · 1 h 30 m · 96 TSS planned Sample data

Z4 threshold Z2 endurance

Race day, decided in advance

Your route. Your pacing. Your fuel plan.

Gravel Nationals · Sat, Sep 26 A race Sample data

CourseBring the route into the plan.

FuelPrepare your race-day fuel plan.

PacingExplore a strategy for the effort.

PreparationYour route. Your pacing. Your fuel plan.

Draft — awaiting your confirmation

Sport-specific targets. A connected plan.

How much to trust each number

Sources stay visible. Estimates stay labelled.

Lab test — anchor

Gas exchange + lactate. The high-confidence anchor.

Field powertest

Repeatable progress check, every 12 weeks. FTP, CP, MAP, sprint.

Activity trend

Inferred from your rides. Direction, not a test.

Population default — estimate

Sources stay visible. Estimates stay labelled.

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