Cozumel's big events, and how busy they make the city
Every event here is verified by a person, dated from its own organiser, and set against Cozumel's day-by-day crowd forecast — so they can be ranked on one scale. "Major" here means an event we have checked and approved as one of Cozumel's biggest, whose days our own forecast reads Busy or Packed — or, for now, sit beyond the forecast window. See the city, day by day →
Calm · Lively · Busy · Packed rank a day against Cozumel's own year — not a headcount.
#1 IRONMAN Cozumel (full distance, Latin American Championship) →
22 November 2026 — we checked these dates against the organiser's own site
IRONMAN Cozumel is the busiest of Cozumel's 2 verified major events — its day is Busy, busier than 77% of Cozumel's year.
The 2026 IRONMAN Cozumel in Cozumel runs 22 Nov 2026, confirmed; expect Busy days — busier than 77% of Cozumel's year. (Avoid-Crowds, as of 2026-09-13; recomputed nightly.)
#2 IRONMAN 70.3 Cozumel →
20 September 2026 — we checked these dates against the organiser's own site
IRONMAN 70.3 Cozumel ranks #2 of Cozumel's 2 verified major events by crowd impact — its day is Busy, busier than 65% of Cozumel's year.
The 2026 IRONMAN 70.3 Cozumel in Cozumel runs 20 Sep 2026, confirmed; expect Busy days — busier than 65% of Cozumel's year. (Avoid-Crowds, as of 2026-09-13; recomputed nightly.)
Planning Cozumel around these dates? Timed entries and tours matched to the day's forecast
Who writes the city guides · Disclaimer — event dates can change; expected dates are labelled and can move.