NOCTURNAL: Denver Halloween Costume Party (21+)

Denver's biggest adult Halloween costume party is back. NOCTURNAL takes over Bierstadt Lagerhaus in RiNo on Saturday, October 31st — two stages of live music, a $2,500 cash costume contest, and 400 of Denver's best-dressed party people. Strictly 21+.

WHAT TO EXPECT

Live band + DJ - $2,500 cash costume prize — come dressed to win - Two stages, open-air photo station, oversized games - Optional $25 open-bar add-on (beer, wine, cider, highballs + NA options)

THE DETAILS - Saturday, October 31, 2026 — doors 8:30 PM, party 9:00 PM–1:00 AM - Bierstadt Lagerhaus, 2875 Blake St, Denver (RiNo) - Strictly 21+ with valid ID — no exceptions - General admission $30 flat. 400 tickets max — when they're gone, they're gone.

All sales final — no refunds - Costumes encouraged — the $2,500 prize goes to the best-dressed - Rideshare strongly recommended;

Our party is ranked #1 on the Definitive Denver Halloween Events & Nightlife Guide 2026