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Step Down Calculator — Safe Mileage Progression

Calculate step-down weeks for safe mileage progression.

How We Calculate This

Step-Down Methodology

This calculator builds weekly mileage using the 10% rule with periodic step-down weeks:

Build weeks: Previous week + 10%

Step-down weeks: Current level x 75%

A typical pattern is 3 weeks building, 1 week stepping down (3:1 cycle). This creates a "two steps forward, one step back" pattern that safely increases overall volume.

Frequently Asked Questions

Last updated: February 2026

All calculations are estimates. Always consult a coach or medical professional for personalised training advice.