Net proceeds from the Marin County Half Marathon help children learn how to swim at the YMCA.

Days until the race.

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Mandatory Packet Pickup Locations

Friday, April 26 from 4 pm – 8 pm

Sports Basement Presidio
610 Old Mason Street, San Francisco, CA 94129

Saturday, April 27 from 10 am – 3 pm

Sports Basement Novato
100 Vintage Way, Novato, CA 94945

Show your bib at checkout for a 20% off discount for the duration of Packet Pickup at Sports Basement!

Win Tickets for Hamilton the Musical!

Purchase raffle tickets for a chance to see Hamilton at the Orpheum Theater in San Francisco on Friday evening, August 16, 2019 — two excellent orchestra seats!

Winner will be randomly drawn and announced at the Marin County Half Marathon on April 28, 2019. The winner does not need to be present.

1 Raffle Ticket – $10

6 Raffle Tickets – $50

13 Raffle Tickets – $100

Do you have more than 6 employees, co-workers, and friends and want to get involved?

All net proceeds raised through Sustainable Sports Foundation events support:

Why support the Sustainable Sports Foundation?

With your support, we funded Spring Splash Week at the YMCA for 350 kids.

To learn more about Sustainable Sports Foundation events & where your money goes, please click here.

Donate via PayPal:



Latest News & Race Updates

Thank you for the feedback Jackie!

I do 10-12 races each season (including national and international championship events), and I have to say that the Marin County Tri is one of the most (if not THE most) well organized event I’ve attended. There were so many meaningful, little extras I don’t even know...