With April 20 falling on a Monday, Colorado is transforming the third weekend of April into a four-day celebration. From the massive crowds of Denver to the intimate magic shows in Fort Collins, here is every notable event happening across the state.
1. Major Festivals & Music Events
- Mile High 420 Festival (Denver)
- The Vibe: The largest free 420 gathering in the world. Expect massive crowds, high-profile musical headliners, and a sea of local vendors in the heart of the city.
- When: Monday, April 20, 2026
- Location: Civic Center Park, Denver
- Cost: Free (Registration usually required); VIP packages $150+
- Website: milehigh420fest.com
- Cloud City Music Festival (Greenwood Village)
- The Vibe: A two-day bass music takeover. Hosted by Ganja White Night, this event features two stages, 28 artists, and a heavy focus on the “Wobble” subculture and live art.
- When: Friday, April 17 – Saturday, April 18, 2026
- Location: Fiddler’s Green Amphitheatre
- Cost: ~$60 – $150
- Website: fiddlersgreenamp.com
- Ice Cube at Red Rocks (Morrison)
- The Vibe: The definitive Colorado 420 experience. Watching a legend perform at the world’s most iconic outdoor venue.
- When: Monday, April 20, 2026
- Location: Red Rocks Amphitheatre
- Cost: $80 – $300+
- Website: redrocksonline.com
2. Local & Specialized Events
- Smokus Pocus: A 420 Magic Show (Fort Collins)
- The Vibe: A psychedelic magic show where lighters come to life and jars of flower appear from thin air. Perfect for those looking for a “high-concept” sit-down event.
- When: Mid-April (Check site for exact 2026 420-week dates)
- Location: The Lyric, Fort Collins
- Cost: ~$30 – $45
- Website: smokuspocus.com
- Tetra Lounge 420 Weekend (Denver)
- The Vibe: A private, members-only consumption lounge. It offers a safe, legal social space with dab bars and music for those who want to avoid the public park chaos.
- When: April 17 – April 20, 2026
- Location: RiNo District, Denver
- Cost: Day passes ~$20 – $40
- Website: tetralounge.com
- CannaBoos Haunted Ghost Tour (Denver)
- The Vibe: A spooky evening bus tour combining Denver’s haunted history with a cannabis-friendly atmosphere. Includes a stop at a retro video game lounge.
- When: Nightly, April 17 – 20, 2026
- Location: Departs from Downtown Denver
- Cost: ~$79
- Website: coloradocannabistours.com
3. Industry & Educational Gatherings
- NoCo Hemp Expo (Denver)
- The Vibe: The world’s most comprehensive hemp business conference. Essential for those interested in the future of industrial hemp, textiles, and cannabinoids.
- When: March 25 – 27, 2026 (Pre-420 Kickoff)
- Location: National Western Complex, Denver
- Cost: $50 (Exhibition) – $500+ (Full Conference)
- Website: nocohempexpo.com
- Puff, Pass & Paint (Denver)
- The Vibe: A relaxed, creative environment where local artists lead you through a painting session while you enjoy your favorite products.
- When: Multiple sessions throughout 420 weekend.
- Location: Private Studio, Denver
- Cost: ~$50 (Includes art supplies)
- Website: puffpassandpaint.com
4. Unofficial & Alternative Events
- The Norlin Quad Gathering (Boulder)
- The Vibe: An “unofficial” tradition at CU Boulder. While the university discourages it, thousands of locals still gather for the 4:20 PM countdown.
- When: Monday, April 20, 2026 @ 4:20 PM
- Location: CU Boulder Campus
- Cost: Free
- Colorado Rockies vs. LA Dodgers (Denver)
- The Vibe: For those who want a high-energy, non-concert atmosphere. The “Rockpile” at Coors Field is a favorite for locals on the holiday.
- When: Monday, April 20, 2026 @ 6:40 PM
- Location: Coors Field, Denver
- Cost: $20 – $150
- Website: mlb.com/rockies
Logistical Reality: Traveling the Legal Landscape
For the tens of thousands of interstate travelers, navigating conflicting laws is paramount.
Hospitality Compliance: Mainstream hotels in major hubs maintain strict no-smoking policies, with cleaning fees ranging from $250 to $500. Travelers are encouraged to use platforms like Colorado Cannabis Tours to find designated 420-friendly properties.
TSA Protocols: Crossing state lines with cannabis remains a federal crime. While TSA focuses on security, discovery will result in a referral to local police.
Equivalency & Limits: States like Colorado and California use an “equivalency” system where other products are translated into flower weight. For instance, 8 grams of concentrate is legally equivalent to 28 grams (one ounce) of flower in Colorado.
