Tapering Explained
A taper is a planned reduction in training volume in the final 1 to 3 weeks before a race, designed to let your body arrive at the start line rested rather than fatigued. It's the part of a training plan most runners are tempted to skip, usually out of a nagging feeling that less training means less fitness.
Why tapering actually works
The fitness gains from months of training don't disappear in one or two lighter weeks; they're already banked. What a taper removes is accumulated fatigue, the tiredness sitting on top of your fitness that builds up over a long training block. Racing on fresh legs with slightly reduced fitness consistently outperforms racing on tired legs with slightly higher fitness, which is the entire logic behind tapering.
How long should a taper last?
| Race distance | Typical taper length |
|---|---|
| 5K/10K | 3-7 days |
| Half marathon | 1-2 weeks |
| Full marathon | 2-3 weeks |
Longer races generally need longer tapers, since the training load leading into them is heavier and takes longer to shed. A 5K taper can be as short as a few days of easier running; a marathon taper typically spans two to three full weeks with a gradual, not sudden, reduction in volume.
What actually changes during a taper
Volume drops significantly, often by 40 to 60% from peak training weeks, while intensity is maintained in small doses. Most taper plans keep some short, race-pace efforts in the mix rather than switching entirely to easy running, which helps legs stay sharp rather than going flat. Sleep and nutrition become relatively more important during this window, since they're now doing more of the recovery work that used to be spread across a heavier training load.
Taper fatigue is normal
Many runners feel sluggish, restless or oddly heavy-legged during a taper, sometimes nicknamed taper tantrum. This is a normal response to reduced training load, not a sign of lost fitness, and it typically resolves once race-day adrenaline takes over. For the full run-up to race day beyond tapering, see the race-week checklist.
Browse upcoming marathons and half marathons to plan your training block and taper around.
Browse eventsThe most common pattern we hear about secondhand from organizers around race week is runners asking whether it's too late to fit in one more long run before the race. My honest answer, echoing standard coaching advice: by taper week, that opportunity has already passed, and squeezing in extra volume now mostly just adds fatigue you'll carry into race day. Trust the plan you followed to get here rather than the urge to do more at the last minute.
Frequently asked questions
Will I lose fitness during a taper?
No meaningful fitness loss happens in a taper of typical length. The fitness built over your training block is retained; what's reduced is accumulated fatigue, not fitness itself.
Should I stop running completely during a taper?
No, most taper plans keep some running, including short efforts at race pace, just at significantly reduced overall volume. Complete rest for weeks isn't the goal.
Why do I feel tired during my taper?
This is common and often called taper fatigue or taper tantrum. It reflects your body adjusting to reduced training load, not a decline in fitness, and it typically passes by race day.