Concept
Self-selected cadence
The step rate a runner naturally chooses at a particular pace and set of conditions.
Why it matters
Runners naturally organize rhythm around body dimensions, pace, experience, fatigue, and current neuromuscular habits.
Why it is a baseline, not a verdict
Natural cadence is often comfortable and economical, but it can still be adjusted when a small change addresses a specific movement or load problem.
Why there is no single personal number
A runner's natural cadence rises and falls across easy runs, races, hills, and fatigued conditions.
How to use it
Measure a repeatable range at several paces before deciding whether a small experiment is justified.
Common misconception
Natural cadence is neither automatically perfect nor something that must be replaced with 180 spm.