A 50,000-square-foot bounce house billed as the world's biggest is set to take over Antioch for two weekends this October, bringing a 900-foot obstacle course, a sports arena and a sci-fi-themed ball pit to the Contra Costa Fair and Event Park. The event runs Oct. 17-18 and Oct. 24-25, 2026, and organizers say it's designed for everyone from toddlers to adults, not just kids looking for a sugar-fueled romp.
According to The Mercury News, the attraction will set up at Contra Costa Fair and Event Park, located at 1201 W 10th St. in Antioch. The outlet reports the event includes a separate sports arena equipped with basketball hoops and soccer nets, plus a sci-fi area featuring moon-crater ball pits. The whole production is tied to The Big Bounce America, the touring company behind the giant inflatable.
A 900-Foot Course and Climbing Towers
The centerpiece is a 900-foot-long obstacle course, according to the East Bay Times, which also notes the 50,000-square-foot attraction is open to everyone, from toddlers to adults. That course stretches roughly three times the size of an average soccer field, the report notes. The event also features climbing towers and slides alongside the sports arena and ball pit areas.
The Big Bounce America's own event page for the Bay Area stop describes the course as stretching over 900 feet in length. For comparison, a separate Big Bounce event in Hong Kong advertises its inflatable obstacle course, described on The Big Bounce Asia's site as Hong Kong's longest at over 500 feet, as notably shorter than what's headed to Antioch.
Tickets, Timing and What's Included
Tickets start at $35, per the same Mercury News report. All-access tickets include a three-hour pass to the event, a timed session inside the World's Largest Bounce House itself, and unlimited access to all the other attractions on site.
Beyond the inflatables, the East Bay Times reports a DJ will be on hand and food trucks will be available both weekends, rounding out what organizers are pitching as a full day out rather than just a quick bounce.
