Vienna's major events, ranked by crowd impact
Every event here is verified by a person, dated from its own organiser, and measured against Vienna's day-by-day crowd forecast — so they can be ranked on one scale. See the city, day by day →
#1 Vienna City Marathon →
Vienna City Marathon is the busiest of Vienna's 1 verified major events — its busiest day reads Packed, busier than 99% of Vienna's year.
The 2027 Vienna City Marathon in Vienna runs 17–18 Apr 2027, confirmed; expect Packed days — busier than 99% of Vienna's year. (Avoid-Crowds, as of 2026-08-31; recomputed nightly.)
Disclaimer — event dates can change; expected dates are labelled and can move.