Outside Festival 2026 is right around the corner! Highlights from 2025 below!

Outside Festival attendance nearly doubles in second year, setting Denver on path to hosting the “SXSW of the Outdoors”

The Outside Festival counted 35,000 attendees in Civic Center Park, including 900 at the two-day Outside Summit at the Denver Public Library and Denver Art Museum

A two-day Outside Summit preceded the two-day festival. The summit featured speakers and panels for 950 outdoor industry business leaders, policymakers and athletes. In the days around the event, the Adventure Travel Trade Association held its annual meeting, the seventh annual Elevate Conservation gala gathered 20 outdoor advocacy groups, national and local politicians held meetings, Trout Unlimited held its annual Troutfest at Coors Field and there was a speed climbing competition on 16th Street.