What is tapering before a marathon? A plain-English guide

What tapering means

Tapering — often called the taper — is the part of a marathon training block when you deliberately do less. A block is simply the stretch of training built around your race. The marathon is 42.2 km (26.2 miles), and the taper is the landing after a long build.

You still run, but your volume (total distance or time) comes down and the hard work eases off. Rest days become part of the training, not a sign you are slacking. How long the taper lasts varies from plan to plan and runner to runner. Your plan should make the shape clear; if you are following a marathon plan, trust the final weeks rather than adding extra.

What changes, and what stays

Intensity is how hard each run feels. In a taper, volume usually drops more than intensity: fewer kilometres, shorter long runs, more easy days. A little controlled faster running may stay so your legs do not go flat.

• Long runs get shorter. You do not need to prove your endurance again.
• Easy runs stay easy — maybe slower than you think — but there are fewer of them.
• Hard sessions reduce. A tempo run (a sustained comfortably hard effort) or set of intervals (repeated faster efforts with recovery jogs) may be shortened or replaced by rest.
• Strength work becomes maintenance: lighter and controlled. Strength training still has a place, but race week is not the time to chase a gym best.

What stays: sleep, regular meals, a calm routine and habits you have practised. Nothing new on race day.

Why it helps (and why you feel rusty)

Training makes you tired; fitness gains happen when you recover. The taper gives your body space to clear fatigue, top up glycogen (the carbohydrate fuel stored in muscles and liver) and let small aches settle. It does not build a new engine in the last stretch; it lets the engine you have built show up.

You may notice phantom niggles, heavy legs or a sudden worry that you have lost fitness. Runners call this a taper tantrum. It is common and does not usually mean anything is wrong. Do not add sessions to prove you are ready: the work is already in the bank.

How to taper without guilt

Tapering can bring guilt: fewer runs, more rest, a feeling that you should be doing more. Treat the taper as part of the training, not a break from it. Keep easy days genuinely easy — if you can chat in full sentences, you are in the right place. Protect sleep. Eat familiar food. Check kit early: shoes, socks, anti-chafe cream and race-day breakfast should all be things you have used before.

If pain changes how you run, or something is persistent, see a GP or physio. Do not train through it to save a plan.

Race week, in plain words

Race week is not the time for cramming. Keep runs short and easy. Some plans include a few relaxed pick-ups (short, gentle faster bursts) to keep your legs awake; do them by feel, not as races.

Carb loading means topping up glycogen in the final days by leaning on familiar carbohydrate foods — rice, pasta, bread, bananas, potatoes. It is not a licence to eat everything in sight, and it is not needed before every short run. On race morning, eat the breakfast you practised on long runs. Wear tested kit. Start controlled. The taper has done its job if you feel a little restless and a little fresh — not flat, not buzzing.