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Level: Advanced
Length: 10 mi (16.1 km)
Surface: Singletrack
Configuration: Network
Elevation: +835/ -987 ft
Total: 31 riders

Mountain Biking South Saint Vrain

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#239 of 1,348 mountain bike trails in Colorado
#2,027 in the world

This is a very fun trail, VERY rocky/technical at times both up and downhill.
If you don't like rocks, avoid this trail!
If you enjoy a technical challenge, do it!

These directions are for the route I took and what the Falcon Guide told me to do(not copied straight from the book), riding this trail backwords from this description should be a good ride too.

From the trailhead on 96:
Continue along South St Vrain creek down trail 909, through some very technical/steep climbing, some of it I'm pretty sure you'll have to walk too.
Eventually you'll hit a road that goes straight and to the left,
Don't go left over the river, go straight up the road.
Theres a short uphill on the kinda rocky road.
The road flatens out and you'll see a gate and just BEFORE that gate
a trail going STEEP up to the right. The trail is marked with an arrow, no trail name.
Carry your bike up this trail, not to worry theres not much hiking here. Everything past this is ridable, shouldn't have to walk your bike anymore for the rest of the ride.
At the next trail juntion, which isn't marked with signs,
continue towards the left down a rocky trail.
At the next junction, you'll see a sign for Sourdough trail 835 going right.
Take Sourdough 835. From here there are a few more trail
junctions, just follow the signs to stay on 835.
After a lot of fun rocky sections of both up and downhill, and
some nice views, after a while you'll hit a wide open area with a big trailhead sign with a map and everything. You can follow the dirt road back downhill to where you started, there's only one intersection you veer right on.
OR instead of going down the dirt road, I think you can keep
going straight across the dirt road for another mile to a
dirt road that will also take you back where you started,
double check the map at this point to be sure.

There are various trails along the way and plenty of areas
to explore, and can be linked up with other tails like Souerdough to
the south, so good luck and enjoy. A detailed map of the area or the Falcon Guides mountain biking book would be good to have with you.

First added by on Aug 12, 2009. Last updated Apr 28, 2020. → add an update
Before you go
  • Drinking water: unknown
  • Lift service: unknown
  • Night riding: unknown
  • Pump track: unknown
  • Restrooms: unknown
  • Fat bike grooming: unknown
  • E-bikes allowed: unknown
  • Fee required: unknown
This trail information is user-generated. Help improve this information by suggesting a correction.
Getting there
From Nederland, go north on 72/peak to peak highway.
Roughly 3 miles north of Ward take a left on 96(Beaver Res. Rd on google maps). Right after you get on 96 there will be the trailhead on the left, the large sign for the trail is about 20 feet or so off the road so its not VERY apparent, I drove clear past it the first time. Just park along the road.
Here's a link to google maps.
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South Saint Vrain Trail map

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Subpar_Shredder (on Aug 24, 2019)
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Good (on Sep 12, 2018)
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Rider questions

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  • interrobangart   ✓ supporter

    Another great trail for the area! I remember riding this when I first moved to Colorado in 1994 and had a crappy old Trek... it killed me, but was a blast! It was definitely more fun once my skills improved and I had a better bike. It is a great place to bike, and hike, and sometimes hiking with your bike.

    I did find that sometimes there were just too many cars in the lot and I'd avoid the crowds and go to less populated trails.

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  • J. Broussard

    Whoa! I love to battle & this trail is a good fight all the way through. Now I'm going to be bored riding any that flows.

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  • kuala_tahan

    My new favorite trail in the Front Range. Real technical, tons of rock gardens, a few super steep techie spots, all around awesome. Haven't been that technically challenged in a while. Did it once as a shuttle from Brainard Lake, then rode up to Beaver Res, down Sourdough, around Wapiti, and back down South St Vrain. Amazing trail!

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  • John Fisch

    As a straight out-and back, this ride is about 12 miles. But there's no need to do that, or the Falcon Guide route either. There are a multitude of loop options; you can hook up with Sourdough, Waldrop, Little Raven, Coney Flats, Buchanan Pass, and a number of FS roads. Be adventurous and be creative. Be advised, however, no matter what route you choose, you will be faced with tough climbs, seemingly endless rock gardens, and you will hike your bike more than once.

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  • Jezuzizkool

    Road this today and enjoyed myself. Ya do need to be in good shape to get over all the rocks! I did the "backwards of the main listing. Found that if you do happen to miss road 96J (as I did) and arrive at the lake turn around and look carefully on the right hand side you will find the trail and it will hook back up with the backwards directions. I am not sure which direction is better but it seems like the same section that are hard to go up would be hard to go down so...

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  • fig171

    Park at the S St. Vrain trailhead ride up the rode to the first fork (96j on google maps) go left follow rode up about 1 mile you will see beaver bog trailhead on the sourdough trail. follow this about 4ish mile to the S St vrain trail and follow it down. when it dumps out onto a road go straight at the fork (DONT go over the bridge). Lower your seat and have fun on some really fun singletrack.

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