Mountain Bike Rides in the Kern River Valley and Southern Sierra Greenhorn East Road


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An easy and picturesque ride on a narrow dirt road.

Greenhorn East Road

Black Diamond

1-16+ Miles.
200-1500 feet of climbing.
200-1500 feet of drop.
Out 'n' Back.

NOTE!! Much of the area around Portuguese Pass Road 24S15 has been closed by the USFS for logging the dead trees. The area is closed from the Sand Shed at Greenhorn Summit/Alta Sierra to Tobias Peak until the end of November. This includes the surrounding roads, Portuguese Pass Trail and Upper Bull Run Trail. More info HERE.

The Ride

Greenhorn East Road, signed 25S11, is a narrow low-use dirt road with wild scenery and incredible views of the Kern River Canyon. Weaving its way along the eastern slope of the Greenhorn Mountains, its mellow slope makes for an enjoyable and fairly easy ride, at least in the first few miles.

2.8 miles into the ride, the road splits. Climbing left will take you up to Portuguese Pass Road, 24S15, which can be used for a loop ride or for access to Portuguese Pass Trail. Pedalling down to the right will continue the dirt road traverse along the rolling terrain of the Greenhorns to Deep Creek Cave and beyond to the paved road 23S18 above Tyler Meadow, about 8 miles from the start. Along the way, there are several splits with dead end roads, some of which have great viewpoints.

The limestone Deep Creek Cave complex is located just above the road on Deep Creek about 6 miles into the ride. The main entrance to the cave has been blocked off by the USFS.

Beyond the cave, the dirt road 24S35 splits right and circles around the upper Bull Run Basin. Continuing on left (24S03) will steeply ascend to the pavement at 23S18 below the Tobias yurt/snow shelter.


From Wofford Heights, drive up the 155 to Greenhorn Summit (about 7 miles). Turn right at the Sand Shed, and 1 1/2 miles down road 24S15 is the dirt road 25S11 known as Greenhorn East Road.

Dont Get Lost!
Kernville Adventure Map

This trail and optional routes are depicted on the local adventure map:

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Map Details