How to taper before a race

What does a taper do?

An athlete who has been building for weeks trains under fatigue, even when fit; their real capacity is hidden behind that tiredness. In widely used models, fitness behaves like an average of roughly the last six weeks of load, while fatigue reflects roughly the last week. The taper exploits that gap: when load drops, fatigue falls quickly while fitness only slowly declines.

The difference between the two, your form, is timed to peak on race morning. One fact is worth keeping in mind: extra training in the final days before a race cannot make you meaningfully fitter by race day, but too much of it can leave you tired. In a taper there is nothing left to gain, only something to protect.

Why does volume drop while intensity stays?

This is the part people most often get wrong. Cutting volume sheds fatigue, but switching to only gentle training dulls your body's feel for speed and can leave your legs flat on race day. The answer is to keep short, well-rested efforts at or slightly above race pace. They are too short to create fatigue, yet sharp enough to keep muscles and nervous system switched on.

Frequency is largely kept too. Someone who trains five days a week does not drop to three when the taper starts; sessions get shorter but the rhythm stays the same. That also helps keep sleep, appetite and daily routine steady. A marathon runner, for example, shortens the long run and the midweek runs but keeps running a few short sections at marathon pace.

• Volume: drops clearly, in gradual steps.
• Intensity: kept, in short doses with plenty of rest.
• Frequency: largely unchanged, with shorter sessions.
• Strength training: heavy work comes out.

How long should a taper be?

The generally accepted range is one to three weeks, and the length depends largely on the race distance and how heavy the preceding training was. For short races such as a 5 km run or a sprint triathlon, a brief easing off is often enough. For races lasting hours, such as a marathon or a long-distance triathlon, the fatigue from earlier weeks runs deeper, so the taper is longer.

Other factors matter too. An athlete who prepared on high volume usually needs a longer taper than someone who trained less. Recovery slows with age, so the taper may need to stretch a little. For lower-priority races during the season, a full taper is not needed; a few lighter days are enough, so the build towards your main goal is not interrupted.

Why you might feel worse during a taper

Many athletes experience the opposite of what they expect when the taper starts: heavy legs, low energy, even easy pace feeling odd. Small niggles may appear, sleep can shift and restlessness grows. Often called 'taper madness', this is very common and usually reflects the body adjusting to a sudden change in load. For most athletes the feeling fades as the race approaches and gives way to freshness.

The real danger is reading this as 'I'm losing fitness' and then testing yourself or cramming in sessions you feel you missed. Fitness does not disappear in a few days. Channel the spare energy into your race plan, equipment checks and sleep. If, however, you have pain that settles in one spot or signs of illness, do not dismiss it as taper nerves; talk to a health professional.

What not to do during a taper

Most taper mistakes come from good intentions: trying to feel more ready and bringing the fatigue back instead. The final weeks are a time to repeat what is familiar, not to try anything new. Everything you will use on race day — shoes, kit, helmet, pre-race breakfast, what you eat and drink during the race — should already have been tested in training.

Nutrition does not need big changes either. If your appetite stays the same while training drops, a small rise on the scale over a few days is common and usually nothing to worry about. Eating more carbohydrate before long races is common practice, but the amount and timing vary from person to person; if you have particular needs or a health condition, ask a specialist.

• Racing in new shoes, a new saddle, a new wetsuit or with a gel you have never tried.
• Doing a maximal test to check your form, or turning a session into a race.
• Heavy strength training; the muscle damage and soreness can last for days.
• Cramming missed sessions into the final weeks.
• Adding long days on your feet, tiring trips or unfamiliar sports.

How should you spend race week?

Race week is made of short, easy sessions, some with brief race-pace sections. Rather than resting completely the day before, many athletes feel better after a short, light session with a few quick pick-ups. In triathlon, that day is also a good chance to check your bike one last time, take a short swim in the race water if possible and walk through the transition area.

The real work of the week is logistics. Prepare your kit a few days early, read the course and race schedule, and plan race-morning timings. Sleep matters too: a restless night before the race is very common and usually does not spoil it, so put the real care into the nights earlier in the week. Treat race morning like an ordinary training morning, with a routine you know.

Frequently asked questions