Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Maddie Schofield and Zoe Weingeist, both 12, paddle their craft "Utter Chaos" during the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
The crew of "Purple Rain" celebrates their victory in the youth race during the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Groups rush to finish building their boats as their hour of alloted time runs down during the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
A group of Seafair interns celebrates the seaworthiness of their just built boat during the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
A group loses balance and falls off their boat during the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
The Pagliacci team rushes to finish building their boat as their hour of alloted time runs down during the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Groups rush to finish building their boats as their hour of alloted time runs down during the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
A boat celebrating the 50th anniversary of the Apollo 11 launch participates in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Competitors of all ages participate in the annual Seafair Milk Carton Derby, Saturday, July 13, 2019 at Green Lake.Genna Martin/seattlepi.com
Participants of all ages were on hand to compete in the 47th annual Milk Carton Derby, Saturday at Green Lake.
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Several different races included youth, family, military, non-profit and STEM categories.
