IMBA EPIC Ride - Big Boulder from Packer Saddle, California

Big Boulder from Packer Saddle, California


The Big Boulder trail is arguably the best descent off the Packer Saddle shuttle drop off, but you'll need to do some climbing to earn it! Less skilled riders will likely have a tough time with this downhill trail, but those with advanced skills who love fast, flowing, long, continuous descents will be itching to do it again and again.

Dogs: Leashed


This ride from Packer Saddle starts on a fire road, but leads to some truly excellent singletrack.


The navigation is a little tricky as there is no signage for Big Boulder until you cross Pauley Creek, so until then follow the directions for Pauley Creek. Then you have to be mindful of the unmarked fork about half way through the climb where you take a left, I believe the marker says OHV trail or something similar for the trail to the left whereas it says nothing for the section going straight. When in doubt, use the MTB Project mobile app!

More details

You can take either of the two trails that split off the top, they reconnect before you get to the fire road. At the fire road, take a right and stay on it (don't stray at any intersection) until you get to the Pauley creek turn off. Once you cross Pauly Creek (it's a large meadow) you'll climb out of the creek and then watch for the Big Boulder turn off on your right. Keep climbing until you come to another fork. The trail you want to take is the option on the left; there is a sign proclaiming it an OHV trail; that's the only confirmation you'll have once heading towards Big Boulder. 

At the very top of the climb, you can practice pedal kicks off the fallen log or hike up to the ridge for some photos. Then pedal up and enjoy the long, fast and flowy descent toward Third Divide. There is one punchy climb, in the beginning of the ride, you'll likely walk it unless you're the 1% of people willing to ride. It's all ripping fun until you get to Lavezolla road and head toward First Divide. 

At the intersection of Third Divide, you may want to head uphill instead of down to connect with Second Divide.

Some of the information on this page is sourced from:


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32.371 km / 20.114 mi

Total Distance

722 m / 2,370 ft

Total Ascent

1,991 m / 6,532 ft

Total Descent

2,163 m / 7,097 ft

Highest Point

Ride type:
Mountain biking
Road riding
Rail Trail
Difficulty: Advanced (Black)
Ride Duration: 2-4 hrs
Fitness Level: High
Shared Bike Path - Paved
Shared Bike Path - Dirt
On-Road Bike Lane
Off-Road - Fire Trail
Off-Road - Rail Trail
Off-Road - Single Track
Off-Road - Downhill
Gravel Road
Mobile Coverage: Limited
First Aid
Bike hire
Bike servicing
Accessible by bike
Accessible by car
Accessible by public transport
Accessible by shuttle
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