# Event Details - **Event Name**: NOCTURNAL: Denver Halloween Costume Party (21+) - **Event Start and End Date**: Sat, 31 Oct, 2026 at 09:00 pm – Sun, 01 Nov, 2026 at 01:00 am (-06:00) - **Event Description**: Denver's 21+ Halloween costume party: live band & DJs, $2,500 costume prize, GA $30. Oct 31, 9PM-1AMAbout this EventDenver'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) https://cdn-az.allevents.in/events2/banners/e54e5880-c0d5-11f1-aa7e-893ff00ac3f2-rimg-w1200-h593-dc180818-gmir.jpg 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. https://cdn-az.allevents.in/events5/banners/e55d9ac0-c0d5-11f1-aa7e-893ff00ac3f2-rimg-w1200-h214-dc080808-gmir.jpg 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 https://cdn-az.allevents.in/events9/banners/e56eb1c0-c0d5-11f1-aa7e-893ff00ac3f2-rimg-w413-h740-dc181818-gmir.jpg - **Event URL**: https://allevents.in/denver/nocturnal-denver-halloween-costume-party-21/100002001403083499 - **Event Categories**: entertainment, costume-parties, halloween, parties, music, halloween-parties, live-music, trick-or-treat, contests, trunk-or-treat - **Interested Audience**: - total_interested_count: 0 - **Event Highlights**: - Age Limit: 21+ - Doors Open At: 8:30 PM - Duration: 4 hours - Location: Bierstadt Lagerhaus - Languages: English ## Ticket Details - **Ticket Price Range**: min: 28.52, max: 33.85, currency: USD ## Event venue details - **city**: Denver - **state**: CO - **country**: United States - **location**: Bierstadt Lagerhaus - **lat**: 39.76281609999999 - **long**: -104.9840373 - **full address**: Bierstadt Lagerhaus, 2875 Blake Street, Denver, United States ## Event gallery - **Alt text**: NOCTURNAL: Denver Halloween Costume Party (21+) - **Image URL**: https://cdn-az.allevents.in/events7/banners/31e3e8fcf1fe46b248b2c4be43f47a8e0f115641fcbe75624154f094cdb72b50-rimg-w1200-h593-dc180818-gmir.jpg?v=1790591478 ## FAQs - **Q**: When and where is NOCTURNAL: Denver Halloween Costume Party (21+) being held? - **A:** NOCTURNAL: Denver Halloween Costume Party (21+) takes place on Sat, 31 Oct, 2026 at 09:00 pm to Sun, 01 Nov, 2026 at 01:00 am at Bierstadt Lagerhaus, 2875 Blake Street, Denver, United States. - **Q**: Who is organizing NOCTURNAL: Denver Halloween Costume Party (21+)? - **A:** NOCTURNAL: Denver Halloween Costume Party (21+) is organized by Visit RiNo. - **Q**: Who is this event for? Is it right for me? - **A:** NOCTURNAL: Denver Halloween Costume Party (21+) is ideal for party-goers, social butterflies, and anyone looking for a great night out with music, drinks, and good vibes. Whether you're a first-time attendee or a longtime enthusiast in Denver, this event is thoughtfully curated to deliver a standout experience worth every moment. 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