A season is a set of races under one competitive cycle. It gives the calendar and narrative arc for a period of URX competition.
Season lifecycle follows structural states (defined in Foundational Principles):
Series (themed groups of races) may appear within a season; they do not replace the season as the main organizational frame.
The season lifecycle governs how URX schedules and groups races: publication cadence, which races are Live together, and how season-level aggregation and official season standings (when published) sit above any single event. Races always belong to a season in this model; the season frame is what ties calendar, narrative, and rollup results.
Details of scheduling, publication, and per-race timing sit under Race lifecycle—start with Race lifecycle overview in this Rulebook.
See also: Structural states; Race publication; League.
League
A league is the competitive environment within a season—where divisions, progression, and league-wide standings attach to the same rule set for Running or Swimming.
Race
A race is a single competitive event with published mechanics, eligibility, a race window, and lifecycle states through Results out.
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