Red Rocks Amphitheatre has notched a new global record, with Billboard reporting that the Morrison venue is the most-attended amphitheater in the world for 2024, as well as the most-attended outdoor venue in the U.S. Related: Here’s all of the shows announced for 2025 at Red Rocks (so far) Roughly 1.6 million ticketed patrons visited Red Rocks during the 2024 season, with Billboard’s chart reporting a cutoff date of Oct.