Hilly and challenging, he Golden Gate Trail Half Marathon course takes runners on a tour of the Marin Headlands inside the magnificent Golden Gate National Recreation Area, just across the Golden Gate Bridge from San Francisco. Those running the half follow the loop route below once around the park — along the Coastal, Wolf Ridge, Marincello, Bobcat and other trails — while those running the full marathon make two loops.
(MORE: Summer Golden Gate Trail Run Half Marathon event details)