Welcome to the premier 100 mile running event in San Diego

Scenic & Challenging 100 Miles in Mt Laguna Recreational Area and along the Pacific Crest, Noble Canyon, and Lake Cuyamaca Trails; 14th Annual Event


Where: Lake Cuyamaca, California, USA
UltraSignup: Ultrasignup
Results: Ultralive
2016 Event is pending permit approvals
NOTE: Next year's race will start on a Friday!

2016 (15th) RACE STARTS IN:

2016-6-3 6:0:0 GMT-07:00
June 3, 2016 6:00:00 AM/PST


2015 Race Results and Pictures are now linked on the homepage.

The start and finish line are at Lake Cuyamaca which is located at 15207 Highway 79 near Julian, CA. The Lake Cuyamaca web site (with information about camping and RV reservations) is located at: Lake Cuyamaca Website.

Qualification requirements to enter the 2016 event are as follows: Applicants must have completed an official 50 mile race in less than 13 hours from January 1,2014 to January 1, 2016. Anyone who has completed an official 100K or 100 mile run in the last 2 years (January 1, 2014 to January 1, 2016 is also qualified to apply.

Questions not covered on the race website can be directed to: scottemills51@gmail.com

Download the Final Runner Info Letter.

Raffle Ticket Sales

Sales for a 2016 free entry to SD 100 and numerous other Sponsor Giveaway Gifts. Proceeds support SD Trailfit and Ultra Medics

Our Sponsors

  • Altra Running Footwear
  • Black Diamond
  • Clif Bar
  • Dirty Girl Gaiters
  • Foot Kinetics
  • High Desert Drop Bags
  • Injinji
  • Orangemud
  • Patagonia
  • Pulse
  • Running Skirts
  • SD Ultra Running Friends (SURF)
  • SoCal Ultra Series
  • Tailwind Nutrition
  • Ultra Running Magazine
  • Ultra Trail Du Mont Blanc
  • Ultralive.Net
Race Pictures By:
Paksit Photos
© 2015 San Diego 100