Tapering — Arriving Fresh on Race Day
The taper is the last few weeks before a goal race, when you deliberately reduce training so accumulated fatigue clears and your hard-earned fitness can finally show. Done right, it's worth real time on the clock — and it's the step nervous runners most often get wrong.
What it does
Through a training block you carry a layer of fatigue that masks your true fitness. A taper sheds that fatigue while preserving the fitness underneath, so you toe the line fresh and sharp. The research is consistent on the recipe: cut the volume substantially, but hold onto the intensity and most of the frequency — and expect a performance gain of a few percent on average1.
How to do it
The big lever is volume; the thing you protect is sharpness. Reduce total mileage, but keep short doses of race-pace or faster running (a few strides, a short tempo or some intervals) so your legs stay snappy. Keep running most of the days you normally do — going cold turkey leaves you flat. And it's not a recovery week off: it's lighter, sharp training.
- Half marathon: ~7–10 days, volume down roughly 40–50%.
- Marathon: ~2–3 weeks, volume down roughly 50–60%, with the final long run 2–3 weeks out.
- Ultra: ~2–3 weeks, with how much you cut volume varying by experience.
- Sharply reduce or drop strength training — its adaptation window has closed and it only adds fatigue now.
Trust it
Many runners feel sluggish, heavy-legged, or even mildly anxious partway through a taper — sometimes called "taper tantrums." That's normal and not a sign of lost fitness; your body is unloading. Resist the urge to cram in extra work to reassure yourself — that just re-introduces the fatigue the taper exists to remove. Sleep well, eat well, and arrive rested.
Sources
- Mujika I, Padilla S. Scientific Bases for Precompetition Tapering Strategies. Medicine & Science in Sports & Exercise 35(7):1182-1187 (2003). (Review of 27 taper studies; mostly trained endurance athletes) ↩
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