Read the percentages as a relative-volume index
The curve starts from 100%, meaning the athlete's usual pre-taper training volume, rather than a fixed number of kilometers, hours, or sessions. Each pre-race value is calculated as 100 × 0.4 raised to the elapsed fraction of the entered taper window, so the values decrease exponentially toward a 40% mathematical endpoint.
The 40% endpoint represents one illustrative 60% reduction choice within aggregate ranges studied in competitive athletes. The race-day row marks the event separately with a dash instead of assigning the race a training-volume percentage.
Separate research patterns from individual prescriptions
A 2007 meta-analysis found the strongest average result around a two-week taper with an exponential 41–60% reduction in training volume while intensity and frequency were maintained. A 2023 review found benefits across several durations up to 21 days and with progressive or step reductions, showing that one curve is not uniquely optimal for every athlete or event.
Earlier triathlon research compared fast and slow exponential tapers with a step reduction under a specific training protocol. Those group findings support exploring taper shape, but they do not determine an individual's workouts from a race date alone.
Map the curve onto a plan you already understand
Treat the rows as trend points rather than daily allocations. Compare the curve with one consistent aggregate measure from your established training, such as weekly distance, weekly duration, or planned repetition count, and use the rounded values as a planning illustration rather than exact physiological targets.
Workout type, intensity, frequency, recovery days, and sport-specific technique remain outside this calculator. Adjust the plan for training history, event demands, recent fatigue, illness, injury, and recovery response, and use qualified coaching or medical guidance when those factors require it.
- Choose one consistent pre-taper volume baseline.
- Use the curve to compare scenarios, not to generate daily sessions.
- Review the final plan against recent training and recovery response.