Mount Umunhum Loop
ElevationAscent: 2,408' 734 m
Descent: -2,423' -739 m
High: 3,459' 1,054 m
Low: 1,301' 397 m
GradeAvg Grade: 7% (4°)
Max Grade: 35% (19°)
Popular rides nearby
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Fremont Older - Wedding
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Big Basin Loop
12.9 mi 20.8 km • Loop • 1,724 ft Ascent 525.53 m Ascent
“Ride through forest to explore one of the highest peaks in the Santa Cruz Mountains.”— Shlomo Waser
Electric Mountain Bikes Unknown
Need to Know
Ride up Mount Umunhum Road (10-12% slope), and after 1.7 miles, there is a large display sign on the right side of the road. This is the trailhead for the singletrack Mount Umunhum Trail. (This trail was opened to the public on September 18, 2017.)
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.
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. There are a few interpretive signs along the trail and many more on the summit area.
After the summit visit, ride down the Mount Umunhum Trail for about 3.2 miles, where the doubletrack Barlow Road starts. Take this connector trail for 1.5 miles to Woods Trail. The last section of the Barlow is quite steep (more than 20%). Turn right on the doubletrack Woods Trail and ride it for 2.3 miles back to the starting point. This section of the Woods Trail is quite moderate with lots of shade.
History & Background
For over 30 years, Mid-Pen worked on returning the area to mostly its original natural environment. However, they kept the iconic 86-foot tower.
The mountain's name means Hummingbird in the Ohlone language.
Land Manager: Mid-Peninsula Regional Open Space District