taper calculator
Triathlon Taper Calculator
Enter the fitness and fatigue you already track, plus the peak weekly load you're coming down from, and get a week-by-week taper that lands your race-day form in the sweet spot of +15 to +25.
Taper length
Projected race-day form
+23
Target sweet spot: +15 to +25
Race-day fitness
65
fitness
Race-day fatigue
42
fatigue
Form is fitness minus fatigue. Because fatigue clears on a fast ~7-day curve while fitness fades on a slow ~42-day one, dropping volume lifts the line week over week. From -5 today, this taper lands you at +23 — right in the band — fresh but not flat on race morning.
Your taper schedule
Volume drops week over week while fatigue clears faster than fitness, lifting your form into the race-ready band. Hold short, sharp intensity through the taper so you stay race-sharp, not sluggish.
How to use it
- 1
Enter your current fitness and fatigue — read them off your dashboard or the Fitness, Fatigue & Form chart.
- 2
Set the peak weekly load you're tapering down from.
- 3
Choose a 1-, 2-, or 3-week taper.
- 4
Read your projected race-day form and the week-by-week load schedule that gets you there.
A good taper sheds fatigue faster than fitness
Your form is fitness minus fatigue. Fatigue is a 7-day moving average and fitness is a 42-day one, so when you cut volume, fatigue collapses roughly six times faster than fitness fades. That gap is the whole point of a taper: a few light weeks let fatigue evaporate while you keep almost all the engine you spent months building. This calculator rolls both averages forward day by day so you can watch that gap open and land your form where it should be on race morning.
It's the same taper solver that builds your plan
PaceBeats runs this exact projection when it shapes the final weeks of your season — rolling your fitness and fatigue through each taper week and scaling the load until race-day form hits the target band. The schedule you see here is a faithful preview of how the coaching engine tapers you.
Aim for +15 to +25 form, not zero training
Detraining is real: stop training entirely and fitness slides while fatigue bottoms out, leaving you flat and over-rested above +25. Taper too little and you toe the line still buried in fatigue below +5. The +15 to +25 band is the freshness most age-groupers race their best on, so this tool scales your taper up or down until your projected form lands inside it.
Common questions
How long should my triathlon taper be?
Match the taper to the race. A sprint or Olympic needs about one week; a 70.3 settles best on a two-week taper; an Ironman usually wants the full three weeks because its training load is so deep that fatigue takes longer to clear. The longer the event and the bigger the block you're coming off, the more taper you need — set the length here and watch where your projected form lands.
How much should I cut training volume during taper?
Cut volume hard while holding intensity. This tool drops to roughly 50-60% of peak weekly load in the first taper week and 40-50% by race week, keeping short, sharp efforts so you stay race-sharp instead of going sluggish. The key is shedding load, not skipping quality — that's what drives fatigue down without letting fitness slide.
Related tools
Fitness, Fatigue & Form
Turn 12 weeks of training load into your fitness, fatigue, and form curve.
Race Time Predictor
Predict a finish-time range, per-leg splits and race-day pacing from your real thresholds.
ACWR Load-Ramp Check
Compare recent load with your 28-day baseline — one context signal, not an injury prediction.
Keep going
Next step
Turn these numbers into an adaptive plan.
PaceBeats combines the relevant calculations with your training history, constraints, and deterministic checks to build and adapt your week.