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Boo at the Zoo at Denver Zoo

Photo: Courtesy Denver Zoo

Festivals

Boo at the Zoo at Denver Zoo

When
Oct 2 - Oct 31 · 4:30 PM
Where
Denver Zoo, Denver
Price
$25.95 to $27.95 adults, $18.95 to $20.95 youth, free under 2

Denver Zoo's Halloween institution takes over a full month of evenings in 2026, not just the week before Halloween. Kids work trick-or-treat stations through the zoo grounds after regular hours, and the run is long enough that a family can pick a weeknight instead of fighting the closing-weekend crowd.

The dated evenings are October 2 and 3, October 9 to 11, October 16 to 18, October 23 to 25, and October 30, all 4:30 to 9 PM. October 31 is a sensory-friendly night with the same hours, built for guests who need lower stimulation.

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Aug 8 - Nov 8 · Four Mile Historic Park

It is ticketed separately from daytime admission, and the first two weekends are priced as value nights at $25.95 adults and $18.95 youth, against $27.95 and $20.95 later in the month. Kids under 2 get in free. Tickets go on sale September 4, with member early access September 1, and the late-October nights sell out most years.

More like this: Denver festivals, or everything happening in October 2026.

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Weekly events, no noise.