Park at the Bald Mountain parking lot. The trailhead is across the Mount Umuhnum Road.<br><br>The trail goes through a forest with a variety of trees such as oak, madrone, manzanita and pine. Ride through the forest for 3.5 miles with lots of hairpin switchbacks. The average slope is about 6%. The last 0.2 miles is open only to hikers. To reach the summit, ride for 0.2 miles on the paved road. <br><br>The views from the summit are great: Silicon Valley lies below you, and (on a clear day) one can see all the way to San Francisco, Monterey Bay, and the Pacific Ocean. There are great views of all the mountains in the area, including Mount Hamilton and Mount Diablo. <br><br>Get more info and download a free audio guide describing the natural environment, the scenery, and the rich history of the area, <a rel="nofollow" target="_blank" href="https://www.openspace.org/mount-umunhum-sierra-azul">here</a>.
You'll find a mix of trail users enjoying the view from the Guadalupe Creek Overlook. Located on the Mount Umunhum Trail, 1.3 miles from the trailhead
Trailhead of the Barlow Road connector trail
Manzanita along the Mount Umunhum Trail
Along the Mount Umunhum Trail.
Mount Umunhhum's Airforce Radar Tower was in use 1957-1980. This iconic structure is visible from many places in the South Bay Area.
Bikers on Mount Umunhum Trail
Madrone trees along the Mount Umunhum Trail.
Mount Umunhum Trail in a cloud rolling over the mountain.