Accuracy Metric

Accuracy measures how stable your verified pace is relative to your recent norm—not whether you are “fast,” but whether reported efforts cohere. Pace units follow the active league (min/km or min/mi on RUN; min/100 m and published open-water forms on SWIM)—see Running and Swimming.

Rolling window

Like other progression metrics, Accuracy uses a rolling observation window (see Appendix A (A.5)). Only verified / published sessions that count for progression participate.

Pace stability and CV

Internally—and mirrored in diagnostic views athletes may see—URX evaluates pace stability using coefficient of variation (CV-style spread) against your typical (median) pace in the window, with emphasis on slowing excursions. A single easy session in the tail is not meant to collapse Accuracy; large, repeated slow outliers or a genuinely split effort depress it. Steady verified work supports it.

Exact coefficients and caps are proprietary (Appendix A); this Rulebook states the structural intent only.

Consequences

Weak Accuracy can flag risk in product UI and may contribute to manual review or enforcement when paired with other signals (Manual review, Rule violations). Part VI does not publish error codes for Accuracy.

See also: Discipline metric; Manual review; Appendix A.