Coming October 28, 2012. Start you partying early! Halloween partying that is. The Los Angeles Halloween Half Marathon (13.1 miles) and Mini Marathon (3.5 miles) start and finish near the L.A. Live sports complex and take runners through old Los Angeles along Figueroa Street past famous sites with bands playing, cheering squads, your own swag bag, entrance to the heath expo and a general festive spirit that only L.A. can deliver. Hey, maybe you should run in costume. It is L.A. after all.