Envirosports - Angel Island Half Marathon

The 2025 Angel Island Half Marathon and 10K, hosted by Envirosports, marks its 35th annual event on August 23, 2025, at Angel Island State Park in Belvedere Tiburon, California. Participants will enjoy a scenic loop trail that offers stunning views of the Golden Gate Bridge, San Francisco, and Alcatraz Island. The half marathon consists of two loops, while the 10K is a single loop.

The event is limited to 400 participants, and registration includes a ferry fee. All finishers receive medals, and awards are given to top finishers in each age group. Visit the organization's website for the most recent information.