The San Diego Ultra Slam is composed of four San Diego ultra marathons: the PCT50, SD100, Noble Canyon 50k, and Cuyamaca 100k. To be eligible for recognition, participants must complete each race in the calendar order they occur.  However, you may choose whichever race you wish to start with. Each race offers a different distance and distinct challenge to the participant, and running all four within one year represents a significant achievement.


The San Diego Ultra Slam is intended to recognize individuals who were able to successfully complete a 50k, 50 mile, 100k, and 100 mile San Diego Trail Ultra Distance (STUD) all within a 12 month period. Since all the events that comprise the Ultra Slam usually fill to limit, those who are interested in attempting the Ultra Slam need to sign up for each of the events when the races first open registration. Current SURF Members receive either a registration discount or early entry to these races - be sure to login and check the Member Benefits page for details! 


Anyone may participate. If you would like to join the challenge, you may declare your intention to do so by emailing, subject line ULTRA SLAM. You'll then need to ensure you register for each event separately using the links above. 

FINISHERS: Upon completion of the Ultra Slam, SURF will send an email to congratulate you and get your sizing information. SURF will ship the jacket to you directly if/once the sizing is in stock. We will also celebrate you via social and email.

CURRENT ENTRANTS and FINISHERS: (note: click tabs at the bottom of the spreadsheet to toggle views)

Mission Statement:

San Diego Ultra Running Friends supports our diverse running and trail community, providing our members with happy, healthy opportunities to run, race, volunteer, and socialize.  We work to create an inclusive environment to cultivate friendships, provide encouragement, and celebrate every runner.  We also encourage members to maintain local running and hiking trails for public benefit to foster environmental awareness in parks and national forests.

Copyright © 2023 San Diego Ultra Running Friends 

San Diego Ultra Running Friends is a 501(c)(3) non-profit organization. 

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