The pre-race taper: how much and how to cut back
On this page
Why taper
During a build, fatigue hides part of your fitness. Cutting the load in the final days lets fatigue clear while the adaptations stay: that's why you feel "light" after a well-run taper.
What the research says
A meta-analysis of 27 studies of competitive athletes (not only marathoners) identified the most effective pattern: about two weeks, with volume cut by 41–60% progressively, keeping intensity and session frequency.1 Lowering intensity or frequency did not improve results. These are averages across studies: an individual may respond differently.
An earlier review reports an average improvement of about 3% (usual range 0.5–6%), with tapers from 4 to over 28 days and volume cuts of up to 60–90%: the patterns used in studies vary widely. It is not a guaranteed gain in a marathon.2
An example of applying it to the marathon
The table is an illustrative example built on these findings, not a protocol tested on the marathon and not a personal plan. Distances and percentages are examples: they depend on usual volume, experience and tolerance. The scheme starts 14 days before the start: if the race is closer, do not make up lost time by changing load at the last moment.
| When | Volume | What to keep |
|---|---|---|
| 14–8 days out | about 70–75% of normal | For example one marathon-pace session and a long run cut from your peak |
| 7–3 days out | about 50% | A short race-pace touch, kept low in volume |
| Last 2 days | minimal | Short jog with a few strides, carb loading |
- Same number of runs as before, just shorter.
- For strength work, the sources consulted give no rule: if you do it, treat it as something to review with whoever coaches you, not to add or drop at the last minute.
- If you use the bike, keep it a short, easy spin.
- Sensations vary between people: avoid adding sessions to compensate.
How we reviewed it
Document review of the 2 sources: a meta-analysis of 27 studies (L1) and an earlier review.
Limits. Competitive athletes from several sports, not only marathoners. These are averages and individuals may respond differently. The marathon table is a practical adaptation, not a tested protocol.
Related tool: Wolf Engine, race splits.
Sources
- Bosquet, Montpetit, Arvisais, Mujika. Effects of tapering on performance: a meta-analysis. Medicine & Science in Sports & Exercise, 2007. DOI
- Mujika, Padilla. Scientific bases for precompetition tapering strategies. Medicine & Science in Sports & Exercise, 2003. PubMed
Sources rechecked on 26 October 2026.