This hike is rated"DIFFICULT". You need to be in very good physical condition to attend. Total elevation gain is approximately 3500ft, about 12 miles long and I estimate that it will take 6 hrs to complete. On the day of the hike you must bring a 2 liter capacity water pack or equivalent of water bottles in a backpack, lunch and snacks, sturdy hiking shoes and hiking poles are recommended for those of you that use them. This is an extremely strenuous hike with slippery steep shale sections but the rewards when you reach the summit make this hike well worth the effort.
The following is a quote from the California Parks and Recreation Department " From the Golden Gate to the Farallon Islands, from the High Sierra to the Central Valley—this is the sweeping panorama you can savor from atop Mount Diablo. Geographers claim that hikers can see more of the earth’s surface from the top of Mount Diablo than from any other peak in the world with only one exception: Africa’s legendary 19,340-foot Mt. Kilimanjaro". HowAMAZING is that, and right in our own backyard!!!
NOTE: Out of consideration for others, please don't try to hike beyond your own capabilities. Mt. Diablo State Park doesn't allow dogs within the park boundaries.