High Quality Content by WIKIPEDIA articles! The LA Marathon (formerly the City of Los Angeles Marathon) is an annual running event held each spring in Los Angeles, California. The 26.219 mile (42.195 km) footrace, inspired by the success of the 1984 Summer Olympic Games, has been contested every year since 1986. The 27th edition of the marathon took place on March 18, 2012. The marathon is currently sponsored by Honda, and thus its official title is the Honda LA Marathon.