2019 Portland Adult Soapbox Derby: 8/17/19 10am to 4pm. CAMARADERIE, COMPETITION, AND COMMUNITY. The Portland Adult Soapbox Derby is a volunteer-fueled community event traditionally held the third Saturday of August.
Portland's PDX Adult Soapbox Derby, Portland. 6,780 likes · 28 talking about this · 1,903 were here. True PDX Color4.6/5(63).
The Portland Adult Soapbox Derby is a free event, fueled by over 100 volunteers, typically held on the third Saturday in August. 40+ teams of racers hurtle down a closed course in hand-built contraptions, powered only by one push at the top of the hill, and the inescapable force of gravity.