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Your longest run is done. The hard sessions are behind you. And now you’ve got seven days of… not much, and it feels completely wrong. Most runners spend taper week convinced they’re losing fitness, googling whether one more 10km run will “keep the sharpness,” and eyeing their training log like it owes them something.
It doesn’t. The work is in the bank. Taper week isn’t about adding anything — it’s about not wasting what you’ve already built by doing something daft in the last seven days. That’s genuinely the whole job.
This guide walks through what to actually do each day, how much to cut your mileage, what to eat, and the mistakes that quietly wreck more race days than undertraining ever does.
Why taper week feels wrong (and why that’s fine)
The itchy, restless feeling is called taper madness by pretty much every runner who’s been through it, and it’s completely normal. You’ve spent 10–12 weeks building a habit of effort, and suddenly you’re being told to do less. Your legs feel heavy one day and springy the next. You convince yourself you’re getting slower.
You’re not. The physiological point of tapering is to let your muscles repair the microscopic damage from weeks of training while your cardiovascular fitness stays largely intact — fitness built over months doesn’t evaporate in seven days of reduced mileage. What does happen in those seven days matters more than most runners think, just not in the way they assume. It’s not about training harder. It’s about not undoing the work with a badly timed long run, a new pair of shoes, or three nights of bad sleep.
The 7-day breakdown: what to actually do
Here’s a practical structure for the week before, assuming your race is on Sunday. Shift the days if yours falls elsewhere.
| Day | Focus | What it looks like |
|---|---|---|
| Sunday (7 days out) | Last proper long-ish run | 60–75 minutes easy, or your last long run of 10-12km max if your plan has it scheduled |
| Monday | Rest or very easy | Full rest, or 20-30 min walk |
| Tuesday | Short run with strides | 30-40 min easy + 4 x 20 second strides |
| Wednesday | Rest | Full rest day. Light stretching or mobility if you want |
| Thursday | Easy shakeout | 20-30 min at conversational pace |
| Friday | Rest | Full rest. This is non-negotiable, not optional |
| Saturday | Pre-race shakeout | 10-15 min very easy jog with 2-3 strides, mainly to settle nerves |
| Sunday | Race day | 21.1km |
If your plan already prescribes a taper, follow it rather than rebuilding this from scratch — but the shape should look similar: a meaningful drop in volume starting 7-10 days out, with intensity kept low except for short strides to keep your legs feeling sharp.
How much to actually cut your mileage
The rule of thumb that holds up well: reduce total weekly volume by 40-60% in race week compared to your peak training week, while keeping some running frequency so your legs don’t go flat. Don’t go from six runs a week to zero and then straight into 21.1km — that’s a shock your body doesn’t need right before race day.
If you followed a structured plan like a 12 week half marathon training plan for beginners, this taper phase is usually already built in during the final week. If you built your own plan or adapted one from a beginner half marathon training plan, check you’re not accidentally squeezing in extra sessions out of anxiety. That’s the single most common taper mistake — not resting too much, but resting too little because it feels wrong.
Sleep, hydration and the unglamorous stuff that actually matters
This is the boring section, and it’s also the one that moves the needle most in race week.
Sleep: Aim for 7-9 hours a night, and don’t panic if you sleep badly the night before the race — the sleep that matters most is two to three nights out, not the final one. Pre-race nerves ruin sleep for almost everyone the night before; it rarely affects performance the way people fear. The NHS has straightforward guidance on sleep habits if your routine’s been chaotic through training.
Hydration: Don’t suddenly double your water intake in the final 48 hours thinking it’ll help — it mostly just means more toilet stops. Stay consistently hydrated through the week, with a bit more attention on the day before: pale yellow urine is still the simplest check that works.
Alcohol: One drink on Thursday won’t ruin your race. A heavy night Friday or Saturday will affect sleep quality and hydration right when you need both steady.
Illness and niggles: If something feels off — a tight calf, a scratchy throat — this is the week to actually rest it rather than test it. You can’t fix fitness in seven days, but you can absolutely turn a minor niggle into a race-ending one by running through it anyway.
Carb loading without overthinking it
You don’t need a three-day carb-loading ritual for a half marathon the way marathoners do — that’s genuinely more relevant for the 42.2km distance, where glycogen depletion is the bigger issue. For a half marathon, a sensible shift towards carbohydrates over the last 2-3 days is enough: more rice, pasta, bread, potatoes; slightly less fibre and fat than usual to keep your gut settled.
Don’t experiment with anything new. Not a new gel, not a new breakfast, not a “detox” smoothie someone recommended. Race week is for familiar food in familiar quantities. If you want the fuller mechanics of carb loading (more relevant if you’re using this half as a stepping stone toward a marathon), the detail is covered in carbohydrate loading before a marathon: how to do it right.
Gear, logistics and the mental side
Lay out your race kit by Thursday, not Saturday night. That includes:
- Race-day shoes — worn at least twice in training, never brand new
- Socks that haven’t given you blisters before (check best running socks to prevent blisters if you’re still hunting)
- Race number, safety pins or race belt
- Watch charged
- Weather-appropriate layers you can discard early
Work out your travel plan to the start line, parking or train times, and what time you need to leave home — then build in 30 extra minutes for the unexpected. Race-day logistics stress is avoidable stress, and avoidable stress is worth eliminating this week.
On the mental side: write down your pacing plan. Not a vague “run comfortably” but actual numbers — your target pace per kilometre, and a slower fallback pace if the day isn’t going to plan. Having a number to aim for beats hoping you’ll “feel it” on the day. If nerves spike, that’s normal too; most runners feel some version of pre-race anxiety, and it tends to lift once you’re moving.
Common taper mistakes to avoid
- Doing one “confidence” long run in the final week because the taper feels too easy. It doesn’t build confidence — it adds fatigue you won’t recover from in time.
- Trying new shoes, socks, or nutrition because you suddenly have spare time to shop. Don’t.
- Skipping rest days because you feel guilty sitting still. The guilt is normal. Ignore it.
- Overeating “for energy” in the days before — you need slightly more carbs, not significantly more food overall.
- Panicking about a missed session weeks ago. One skipped run in week 6 has zero bearing on race day. Consistency over months matters far more than any single session.
The Honest Takeaway
- Cut your weekly mileage by 40-60% this week, but keep running a few short, easy sessions — don’t go to zero and then straight to 21.1km.
- Your last meaningful long run should be 7-10 days before race day, not three.
- Sleep matters most two to three nights before the race, not the final one — so don’t stress if you sleep badly on Saturday night.
- Nothing new this week: no new shoes, no new gels, no new breakfast. Familiar is the whole strategy.
- The itchy, under-trained feeling is taper madness, not a sign something’s wrong. Trust the work you already did.