The route map is available online at: http://www.aidswalk.net/sanfran/eventinfo/maps.html#route
"The AIDS Walk San Francisco is happening in Golden Gate Park; Please be advised that the area will have increased pedestrian and vehicular traffic during that time. If you're planning on fast park ride, please consult the route map and plan your ride accordingly."
“What gives a person who chooses to drive a car more of a right to travel safely than a person who chooses to ride a bike? Amazing what blatant inequality drives conventional understanding of the world.”