Hunter S. Thompson Fear & Loathing

The Hunter S. Thompson Fear & Loathing is an annual ultra running event held in San Francisco, CA, featuring 50K and 50-mile distances. Starting from Twin Peaks, the city's highest viewpoint, runners embark on a single-loop urban course that passes many iconic tourist spots.

The race challenges participants with 3,600 feet of elevation gain and loss, mostly on city streets, with some trail options on the 50-mile route. Aid stations are sparsely provided, emphasizing self-sufficiency and the spirit of adventure. The event is free to enter, with no awards or official aid, fostering a unique "fat ass" running culture focused on exploration and camaraderie. Visit the organization's website for the most recent information.