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The Cost of Letting Mileage Rise During the Marathon Taper: Up to 8 Minutes Slower, and How Much to Cut Each Week
An analysis of Strava logs from more than 158,000 marathoners found that runners who cut mileage every week for a strict 3-week taper finished a median 5 minutes 32 seconds faster, about 2.6% of finish time, which works out to 5 to 8 minutes for a 3:30 to 4:30 marathoner.
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