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Planning

Race-Week Taper Planner

Build a race-week taper using the Bosquet 2007 meta-analysis: 41–60% volume reduction over 8–14 days while keeping intensity sharp.

Your numbers

Start from an example

Units
Race distance
Peak weekly volume (km)

Your biggest recent week, before the taper.

Quality sessions a week at peak

Tempo, interval or race-pace runs.

Taper length

Weeks before race day the taper starts, race week included.

Result

Average volume cut
55%
Race-week volume
27.2 km
Race-week cut
66%
Weeks planned
2

Weekly volume through the taper

From your peak week to race week.

Peak2 weeks outRace week
Weekly volume (km)
27.2 km

Week by week

  1. 2 weeks out

    44.8 km (44% under peak) · longest run 20.2 km · 3 quality sessions

    Keep the pace of quality sessions and the number of runs; shorten the reps, easy runs and long run.

  2. Race week

    27.2 km (66% under peak) · longest run 12.2 km · 2 quality sessions

    Race week: every usual run, all short, with a few race-pace strides; nothing new, sleep and carbs first.

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  • Nutrition Macro Calculator

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All articles

Use it from an agent or code

Any agent can run this calculator by URL: put the inputs in the query string and get JSON back, with the inputs that used defaults and a line to cite (add format=md for markdown). MCP clients reach it through https://aifithub.io/mcp.

https://aifithub.io/api/run/race-week-taper?peak_volume=80&peak_intensity=3&taper_start_weeks_before=2&race_distance=marathon

In code, import the same module; it runs where you import it, with no request or key.

import { compute } from "https://aifithub.io/engines/race-week-taper.js";

Input and output contract, TypeScript types and the guide for agents.