Anniversary Trail is a hiking, biking, and horse trail in Portola Valley, California. It is within Windy Hill Open Space Preserve. It is a mile long and begins at 1,798 feet altitude. Traveling the entire trail is 1.2 miles with a total elevation gain of 420 feet. Near the trailhead there are a parking and restrooms. The trail ends near Windy Hill (elevation 1,919 feet). There are also benches near the end of the trail.
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