Last verified: May 2026
The Show
4/20 Eve On The Rocks is Wiz Khalifa’s annual Red Rocks Amphitheatre concert — held since 2015 on the evening of April 19, the night before 4/20. The show has become one of the marquee cannabis-cultural events on the Denver-area calendar.
The 2026 Lineup
The April 19, 2026 lineup features:
- 2 Chainz
- Berner (founder of the Cookies brand — Cookies and boutiques)
- The Underachievers
- Chevy Woods
- DJ Bonics
Red Rocks — The Venue
Red Rocks Amphitheatre is owned by the City of Denver (the venue itself, owned via the Denver Department of Parks & Recreation, but located in Morrison, Jefferson County — outside Denver city limits). Capacity ~9,500. The natural-rock-formation amphitheater has been one of the most acoustically and visually significant concert venues in the world since its 1941 dedication.
The Cannabis Posture
Red Rocks is officially a smoke-free venue prohibiting cannabis use. Enforcement is widely viewed as nonexistent during concerts; the venue’s open-air design and the cultural norms of its patrons mean cannabis smoking is ubiquitous at Red Rocks shows.
The pattern is a Denver-area cultural fixture: the formal rule says no, the operational reality says yes-with-discretion. Red Rocks staff focus on alcohol-related issues, crowd safety, and unauthorized re-entry rather than active cannabis enforcement.
Important caveats:
- Possession remains technically illegal on Denver-owned property — the rule has not changed even if enforcement is light
- Driving from Red Rocks while impaired is heavily enforced — CSP and Jefferson County Sheriff routinely DUI-checkpoint along I-70 and US 285 leading from the venue
- The amphitheater’s open-air design means ambient cannabis smoke at large shows is essentially universal — non-consuming patrons should expect exposure
The Mile High 420 Festival Connection
4/20 Eve On The Rocks (April 19) sits the night before the Mile High 420 Festival at Civic Center Park (April 20). The two-event sequence has become a cannabis-tourism anchor for the Denver area: Wiz Khalifa at Red Rocks the night before, the Civic Center festival the day of. Cannabis-tour operators (Colorado Cannabis Tours, etc.) often package the two events together. Mile High 420 page.
Other Red Rocks Cannabis-Adjacent Programming
Beyond the 4/20 Eve show, Red Rocks programming throughout the season is heavily cannabis-adjacent in cultural terms. Major hip-hop, electronic, jam-band, and reggae shows draw heavily cannabis-culture audiences. The same nonexistent-enforcement pattern applies to most concerts.
Getting To and From Red Rocks
Red Rocks sits in the foothills of Morrison, Jefferson County — about 15 miles southwest of downtown Denver. Standard transit options:
- Driving — standard private vehicle (with sober driver due to DUI risk)
- Rideshare — Uber, Lyft to/from the venue (surge pricing common)
- Concert shuttle — Red Rocks operates official shuttle service from Denver locations on major show nights
- Cannabis-tour buses — Colorado Cannabis Tours and similar operators offer Red Rocks transportation packages
- Hotel pickup — many Denver hotels offer concert-shuttle service
The Federal-Land Adjacency Caveat
⚠️ Red Rocks itself is on Denver-owned property within Jefferson County, but the surrounding area includes Bear Creek Lake Park (Lakewood municipal) and other public lands. Concert-goers traveling to or from Red Rocks should not assume cannabis is permitted on adjacent public lands. Rocky Mountain National Park is federal property and is a separate concern for ski-country and mountain travelers. Ski-country travel detail.
Companion Pages
For other Denver cannabis-related programming, see our Mile High 420 page and DIA airport page.
For in-depth cannabis education, dosing guides, safety information, and research summaries, visit our partner site TryCannabis.org