This event is in the past.It took place on August 30, 2026 at BATS Improv Theatre.
Comedy Show
Marina District, San Francisco
🎭Drop in anytime, no commitment needed
🚪Enter through the middle glass doors, not the red steps
Spend Sunday evening laughing through six hours of spontaneous scenes at BATS' annual Jam-A-Thon. It's free, fast-paced, and gloriously unpredictable: drop in for an hour or stay until the lights go down.
Spontaneous comedy
Late-night laughs
Community theater
Historic venue
Comedy ShowMarina District, San Francisco
🎭Drop in anytime, no commitment needed
🚪Enter through the middle glass doors, not the red steps
Spend Sunday evening laughing through six hours of spontaneous scenes at BATS' annual Jam-A-Thon. It's free, fast-paced, and gloriously unpredictable: drop in for an hour or stay until the lights go down.
Spontaneous comedy
Late-night laughs
Community theater
Historic venue