Hunter S. Thompson Fear & Loathing

Ultra80.5 km50KSold Out
Sunday, December 6, 2026
Registration closed Nov 26
Twin Peaks, San Francisco, CA, USA
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About the race

Welcome to Hunter S Thompson Fear and Loathing, jointly presented by Haight Ashbury Ultra Society (since 1985), Zombie Runners (2006 - 2011), and Fat Ass Runners (since 2012).

You'll start at sunrise from Twin Peaks, the highest vista point in the city, with the entire city under your feet. The single loop course leads you to all the tourist spots on foot.

This is a fat ass event: No Fees, No Awards, No Aid, No Wimps. This is a qualifier for the Ohlone Wilderness 50K Trail Run.

Aid stations

Aid stations are not guaranteed, but are mostly provided from cars parked at approximately:

  • Mile 0: Twin Peaks (your car)
  • Mile 6: Run100Stan (Cesar Chavez / 3rd St)
  • Mile 14: derKing Japantown (Geary & Webster)
  • Mile 17: Chihping Coit Tower (Grant Ave & Lombard St)
  • Mile 20: Marina Green Jaber Party
  • Mile 25: 49ers Larry Seacliff Baer (30th Ave & El Camino del Mar Fralick)
  • Mile 32: Lake Merced
  • Mile 38: Sunset Blvd
  • Mile 44: Stanyan St
  • Mile 50: Twin Peaks (my car)

Volunteers are wanted. Contact Chihping Fu by e-mail.

Charities

We support the Shoes For Runners cause of Noé Castañón for the 15th straight year, since 2012. We donate running gear to Mexican villages and the world.

The course

80.5 km50K

Cutoffs and the 50 mile finish

If you make the 4hr 45min or 11:45 am cutoff at mile 25, you are good to go for the 50 miler. Otherwise, you will be on your own, and we suggest you turn to the 50K route before we head back home.

Starting in 2024, 50 mile runners must run the 0.67 mile hourglass loop around Twin Peaks one more time after they get back, just like in the morning. This gives the true distance of 50 miles.

Location

City insight: San Francisco

San Francisco, officially the City and County of San Francisco, is the 17th-largest city in the United States and the second most populous in the Bay Area. It is a global center for technology and finance, known for its eclectic architecture and mild climate. The Mediterranean climate brings cool, foggy summers and mild, wet winters, so early autumn and spring are the best seasons to race.

Know from the athletes

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Dec 6, 2026
Hunter S. Thompson Fear & Loathing
Free
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