Outside Lands wraps Sunday after three days and roughly 225,000 people in Golden Gate Park. The festival says it kept 89% of last year's waste out of the landfill — a number worth grounding in where the trash physically ends up.

Outside Lands closes Sunday night on the Lands End stage, and when the last of roughly 75,000 people a day files out of the west end of Golden Gate Park, a second, quieter operation takes over the meadows: the one that unmakes the festival.

The scale of it is easier to grasp in pounds than in headliners. In 2025, by Outside Lands' own accounting, the three-day event produced 372,644 pounds of waste — 186 tons — and diverted 330,184 pounds of it, or about 89%, away from the landfill. The festival has reported a diversion rate in that range for years; a 2016 tally put it at 91%. Those figures are self-reported, measured on-site rather than by an independent auditor, and this weekend's totals won't be counted for weeks.

What that 89% describes is a sorting job. On the ground, the waste-management contractor Clean Vibes runs the color-coded stations and the volunteer crews that pull cups and plates out of the wrong bins; the festival says its single-use serviceware is fully compostable. From there, Recology — the city's hauler — takes over. The compost is trucked to Recology's Blossom Valley Organics facility in Vernalis, out in the Central Valley. The recyclables go to Recycle Central at Pier 96, on the southern waterfront, a plant that sorts on the order of 500 tons of commingled material a day. The San Francisco Department of the Environment is the city partner on the targets.

The number counts what gets collected, which is not quite the same as what gets dropped. Neighbors on the park's edges have told CBS News and the SF Standard in past years about bottles thrown into the bushes and the smell that lingers a day or two — the part of the weekend that doesn't make the diversion sheet.

And then it's gone. "Two days after this festival's over," one Golden Gate Park resident told the Standard last August, "it's gonna look like nothing ever happened." By midweek the polo fields reopen, the fencing comes down, and the only evidence a walker finds is flattened grass — 186 tons having quietly left the park for Pier 96 and Vernalis.