The Seattle Bucket List: #tbt to one of the best events that Greenlake has to offer. The Seafair Milk Carton Derby is a fantastic event held along the south end of the lake. Teams compete in a race on the Lake in boats created from milk cartons and imagination! The event is free and incredibly fun. . . . . . #amazing #beautiful #derby #clouds #excitment #cloud #shore #familyfun #beach #sunny #greenlake #water #view #nature #pretty #amazing #shore #race #science #boat #lake #boating #naturelover #naturephotography #naturephoto #seattlebucketlist #follow #photography #outdoors #seafair