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

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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?

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.

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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...