On the night of February 27, a toddler walking with her mother was attempting to cross 4th Street in Mission Bay. The two-year-old was struck and pinned under a car that had run a red light — she later died at a hospital.
A fellow San Franciscan, Harrison Anderson, 43, couldn’t let it go. So he decided to do something.
Anderson, himself the father of a four-year-old, drew what he calls “The Hourglass,” a 50-mile loop around the city that touches all four corners of SF’s 49 square miles…