Participate in a state wide movement to cleanup waterways and beaches by joining us to cleanup Thomas Kirker Creek!39th Annual California Coastal Cleanup Day at Thomas Kirker CreekEach year, volunteers…

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.Calling all experienced trail runners to an exploratory run at Curry Canyon…

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.Come and enjoy the fall weather on a three-mile walk through parts…

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.AGE REQUIREMENT: 14+ years oldCome join Save Mount Diablo for a day…

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.Come celebrate Halloween on the trails of Black Diamond Mines Regional Preserve…

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.Join us as we explore 180 million years of geologic history on…

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.We’ll hike Bob Walker Ridge through native Blue Oak forests and enjoy…

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.This loop hike through blue oak woodland leads us from Borges Ranch…

All Discover Diablo hikes are subject to, and will honor, all applicable COVID-19–related restrictions in place for our area.We’ll venture out into the oak grasslands along the shoreline of Los…