Cycle to Zero is a 3-day event that takes riders north from San Francisco, to Guerneville, Sonoma, and then back along the coast to San Francisco. On the second day, riders may choose a 38-mile, 65-mile, or 104-mile route starting in Guerneville, or stay and play in the Russian River Valley for the day. The event will be held May 29 – 31, 2026.
All funds raised by Cycle to Zero benefit the HIV, sexual health, substance health, overdose prevention, and community support programs and services of San Francisco AIDS Foundation. Find out more at cycletozero.org.
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