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Big Boulder from Gold Valley Rim Trail - IMBA EPIC

 4.5 (11)
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21.7 Miles 35.0 Kilometers



1,498' 457 m


-5,662' -1,726 m



Avg Grade (4°)


Max Grade (29°)

7,481' 2,280 m


2,901' 884 m




Getting forecast...

You still have about 2000 ft of climbing on your way, but descending Big Boulder is pure bliss!

Michael Klimek

Dogs Leashed

Features -none-


This ride from Packer Saddle starts on the new Gold Valley Rim Trail, for some truly excellent singletrack. The Big Boulder trail is arguably the best descent toward Downieville off Packer Saddle shuttle drop off, but you'll have to do a little climbing to earn your descent. Less skilled riders will have a tough time with the down trail, but those with advanced skills who love fast, flowing, long, continuous descents will be itching for another lap.

Need to Know

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!


Pick up the trail at Packer Lake Saddle (intersection of County Route 621 and Butcher Ranch Rd.), just a short distance from the shuttle drop off at the top of Sunrise Trail. (It will be down the hill from the shuttle drop off. The shuttle drives past it on its way to Sunrise Trail.)

Gold Valley Rim Trail starts with a gradual climb to obtain the ridge where you are rewarded with sweeping views of the Lakes Basin. After riding along the ridge, the trail crosses a couple small service roads where it then deviates from the old PCT and begins to drop down toward "Baby Heads" on new singletrack. The descent is on par with the many great descents in the Downieville trail system with plenty of rocky technical sections. The trail crosses over several sections of rock slab that gives you a little taste of Moab riding, Sierra style. Look out for a great optional slab descent feature about 4.7 miles in.

The trail ends at an intersection with Forest Service Road 93-3. Follow signs straight to continue on to "Baby Heads" and the start of Pauley Creek /Big Boulder trails.

Once you cross Pauley 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.

You'll begin a well-earned descent here, and one that is as much fun as you can find anywhere in the Downieville area. The trail is fast, flowy, a little technical, and a little dangerous. You'll head through exposed sections and through the woods, FAST. Big Boulder ends at Third Divide for some more fast downhill flow. It's all ripping fun until you get to Lavezolla Road and head toward First Divide.

From Lavezolla Road, you'll come to an obvious open area just before the fire road starts upward, where First Divide (upper portion) sneaks off to the right. Look for a little sign that says "Trail" with an arrow. First Divide is relatively flat/descending singletrack, pedaling most of the way. At times it's quite narrow with a rock face wall on one side and a drop off small cliff on the other.

At the end, you can cross the fire road and continue onto First Divide (lower portion), which will be a singletrack on your right. The First Divide (lower portion) is rocky singletrack mostly along a rock edge, with a small bit of climbing. It's a short stretch, but technical in spots, so be particularly attentive. The difference here is that if you go off trail, it's a long way down.

This last portion puts you onto a paved road, which you'll follow mostly downhill about a mile back to Downieville.


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Your Check-Ins


Nov 3, 2018
Jonathan Coupal
Sep 15, 2018
Ivan Oregel
Jul 23, 2018
Jay Robs
Jul 18, 2018
Colin Gruen
Jul 30, 2017
Larry Russell
I climbed Pauley Creek to take it. 22mi
Jul 13, 2017
Alex Von der Mehden

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Trail Ratings

  4.5 from 11 votes


in Gold Valley


  4.5 from 11 votes
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4,216 Since Oct 19, 2015
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As of the weekend of June 11th, all snow is gone. There are some downed trees on the approach to Big Boulder but can be navigated/hopped over with ease. There are no downed trees after the hike-a-bike. Trail conditions were all-time awesome last weekend. Jun 14, 2016
Super rough loose rocky descents. Total ascent, after the shuttle drop off point, is between 1,500 and 2,000ft. I rode the Big Boulder on a Specialized Fatboy with a Bluto fork and it was AWESOME!, so much fun that I want to do it again. IMO, the Butcher trail is a pansy easy trail in comparison. No drops, but the you really have to be really efficient and confident at picking your line because the steep sections are heavily eroded and full of cobbles. May 22, 2018
nathan dollick
Carlsbad, CA
nathan dollick   Carlsbad, CA
one of the best downhill sections we experienced in will have to earn it as the climb up to the trail head is harder than the elevation profile citrates....lots of loose shale and rocks to throw off your momentum. I would highly recommend the route if you aren't afraid of some work ahead of time. Pauley trail is very nice as well and much less work....but not nearly as epic of single track...pauley has much better views. can't go wrong with either route just know your group and bring extra water if your doing big boulder! Sep 28, 2018

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