Trail Running calendar near Los Altos Hills 2026-2027

A Napa Valley trail ultramarathon using Skyline Wilderness Park and Suscol Headwaters trails, offered as a solo ~50-mile challenge and a one-loop ~25-mile option, with cupless aid stations, drop bags, and specific crew and pacer rules.

Run for Amma is a charity trail event at Skyline Ridge Open Space Preserve in Los Gatos offering 50K, 30K and 10K courses, with all registration proceeds donated to a UCSF cancer research lab.

A weekend of Spartan obstacle course racing at Toro Park near Salinas, CA, with Sprint and Super distances, kids races, trail events, team registration, and spectator access.

Toro Park Trail Run in Salinas, CA uses rolling golden hills and oak-shaded trails. Multiple trail distances are offered including marathon, half marathon and 10K, and the weekend also features Spartan obstacle events and spectator access.