San Francisco 50mi/50km Endurance Run

Race Information


Rodeo Beach, GGNRA, 1033 Fort Cronkhite, Sausalito, CA 94965.

  • Date:
  • Time:
  • Events:
  • Saturday, May 19, 2018
  • 7:00 a.m.
  • 50 mi 50 KM


Enjoy vistas of the Pacific Coast as you take a scenic tour of the spectacular Marin Headlands with views of Tiburon, Pirates Cove, San Francisco and the Golden Gate Bridge. The 50 miler is an out & back to Stinson Beach with a shortcut to the finish at Rodeo Beach. 50K runners take an easier, shorter route and turns around at infamous Cardiac Hill.
(Distances are accurately measured using a Rolatape® surveyor's measuring wheel.)

Driving Directions



Rodeo Beach/Sausalito



Bib Number Pick-Up

Saturday 6:00 a.m. - 6:45 a.m. at Rodeo Beach.

Time Limit

50 mi - 16 hours

50 KM - 10 hours


50 mi - Pacers are allowed at the Muir Beach aid station (38 mi) or after. Note: the Muir Beach parking lot closes at 8 pm. There is parking available 1/2 mile away along Muir Woods Rd.

Aid Stations

Fully-stocked aid stations every 4 - 5 miles. You can expect fresh fruit, salty snacks, assorted candy, boiled potatoes & salt, water, and Clif Shot Electrolyte sports drink. In addition, the start/finish and Tennessee Valley aid stations will have soup and other ‘real’ food during the night and second morning. If you would like to be sure that you have Clif product, SaltStick capsules, or any other specific item at the event, you should carry it with you. Additionally, it is highly recommended that runners carry at least 20 oz. of water between aid stations.

Aid Stations/Drop Bags (PDF file opens in new window)

Crew Driving Directions (PDF file opens in new window)


We use state-of-the-art Bibtags by to accurately time each runner’s finish time based on “Gun Time”. Results are posted every 15 minutes at the event and published on the website the next day.


Midlayer fleece to all 50-mile runners. Hi-tech shirt to all 50K runners. Award medals are given to the 1st female and male finishers overall and top three finishers in each age group. Finishers will receive a custom award (Belt Buckle - 50 Mi, Coaster - 50K) to commemorate their accomplishment.

Cash Prize

50 mi
1st $100
2nd $50
3rd $25
1st $100
2nd $50
3rd $25

UltraSignup Forum and Facebook Group

The San Francisco 50/50 UltraSignup Forum is for information about this event. Please post messages regarding places to eat or stay, sharing rides with fellow runners, etc. Go to Forum (opens in a new window).

The Friends of Coastal closed group is for information about Coastal events. Please post messages regarding places to eat or stay, sharing rides with fellow runners, etc. Go to our Facebook Page (opens in a new window) to join the group.