How to taper for a marathon

You’ve done the work. The long runs are banked, the mileage is in your legs, and the race is two or three weeks out. Now comes the part that feels like doing nothing and is actually doing a great deal: the taper. Done right, it’s where all that training finally becomes fitness you can spend. Done wrong — or not at all — it quietly wastes the whole build.

What the taper does

Through a marathon block you carry a low-grade fatigue; you’re always a little tired, and that’s normal. The taper is the planned reduction in training that lets that fatigue drain away while your fitness stays put. Your muscles top up their glycogen, micro-damage repairs, and you arrive at the start line fresh instead of frayed. The fitness was built weeks ago — the taper just uncovers it.

How to do it

The core move is simple: cut the volume, keep a little intensity.

• Length: two to three weeks for a marathon. Shorter races need less; the marathon’s deep fatigue needs the full window.
• Volume: ramp weekly mileage down to roughly 60%, then 40% of peak over the final weeks. Your last long run is well before race day, not the weekend before.
• Intensity: keep some short, race-pace-ish efforts in. Going fully soft leaves your legs flat; a few sharp, brief touches keep them lively. Just cut the volume of that work, not its existence.

Why you’ll feel terrible in the middle

Almost every marathoner hits “taper madness” — restless, irritable, convinced they’re losing fitness, haunted by phantom aches. It’s normal, it’s temporary, and it’s not a signal to go do a panic long run. Your body is unloading, and the sluggishness is part of the process, not evidence against it. Trust the plan you made when you were thinking clearly.

The mistakes that waste a taper

• Not tapering enough — squeezing in “just one more” big week because you feel guilty. You can’t add fitness this late; you can only add fatigue.
• Tapering too hard — cutting everything, including all intensity, so your legs go dead. Keep them ticking over.
• Changing everything at once — new shoes, new foods, a big diet shift. Race week is for the familiar. Nothing new on race day.

Trusting the drawdown

The taper asks for the one thing trained, motivated runners find hardest: holding back on purpose. And the right amount to hold back isn’t identical for everyone — it depends on how deep your fatigue actually is, which is exactly the kind of thing a fixed plan can’t read and your own restlessness will lie to you about. Liftrun watches your recovery signals through the taper — resting heart rate, HRV, sleep — so you can see the fatigue actually draining away, and arrive at the line genuinely fresh. Then you go and spend everything the build gave you. That part’s on you.

Training guidance, not medical advice.