Prague's major events, ranked by crowd impact
Every event here is verified by a person, dated from its own organiser, and measured against Prague'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 Prague'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 Prague's own year — not a headcount.
#1 Vodafone Prague Marathon →
2 May 2027 — we checked these dates against the organiser's own site
Vodafone Prague Marathon is the busiest of Prague's 2 verified major events — its day is Packed, busier than 99% of Prague's year.
The 2027 Vodafone Prague Marathon in Prague runs 2 May 2027, confirmed; expect Packed days — busier than 99% of Prague's year. (Avoid-Crowds, as of 2026-09-10; recomputed nightly.)
#2 Generali Prague Half Marathon →
3 April 2027 — we checked these dates against the organiser's own site
Generali Prague Half Marathon ranks #2 of Prague's 2 verified major events by crowd impact — its day is Packed, busier than 95% of Prague's year.
The 2027 Generali Prague Half Marathon in Prague runs 3 Apr 2027, confirmed; expect Packed days — busier than 95% of Prague's year. (Avoid-Crowds, as of 2026-09-10; recomputed nightly.)
Planning Prague 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.