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A very technical descent from the Brainard Lake parking lot to Middle St. Vrain Road.


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Map Key

6.9

Miles

11.2

KM

Singletrack

10,067' 3,069 m

High

8,642' 2,634 m

Low

293' 89 m

Up

1,715' 523 m

Down

5%

Avg Grade (3°)

15%

Max Grade (9°)

Dogs Off-leash

E-Bikes Not Allowed

Description

North Sourdough is a technical trail that features constant rocks and roots throughout. For those of you who have ridden in New England, this trail may be reminiscent to you. If I had to pick one word to describe this trail, "flow" would certainly not be it. That said, North Sourdough is a blast to ride.

There are not very many super steep sections but it is, as previously stated, a sustained technical challenge. Bounce and weave your way through pine and aspen forest and keep an eye out for wildlife. Moose and Elk are always possible to encounter. This trail is also a great fall ride if you'd like to do some leaf peeping.

Find the trailhead directly behind the main parking area and get straight into the fun. At an intersection with South Saint Vrain Trail just after crossing a bridge, keep straight on North Sourdough. This is a well signed intersection. Expect a few punchy, technical climbs but for the most part you'll be pointed down. Eventually, you'll cross a dirt road. This is a good bail out point to the Peak to Peak highway if you did not enjoy the first portion of this trail.

If you did like what you rode, continue onward. The trail will offer more thrills as it winds its way to the terminus at Middle St. Vrain Road (CO hwy 92).

Contacts

Shared By:

Brian Smith with improvements by Richard Hackett

Trail Ratings

  3.9 from 15 votes

#8924

Overall
  3.9 from 15 votes
5 Star
40%
4 Star
27%
3 Star
20%
2 Star
7%
1 Star
7%
Trail Rankings

#855

in Colorado

#8,924

Overall
9 Views Last Month
2,976 Since Oct 3, 2014
Difficult Difficult

0%
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83%
17%

Photos

Climbing Sourdough from Beaver Reservoir offers some nice views from time to time.
Jul 14, 2015 near Nederland, CO
Very nice view here!
Sep 20, 2015 near Nederland, CO
It's rare that you ride down to Camp Dick on perfect snow!
Feb 18, 2017 near Nederland, CO
A cloudy view on North Sourdough.
Jun 28, 2017 near Nederland, CO
Tight wooded climb through aspen on the N. Sourdough Trail.
Sep 8, 2020 near Nederland, CO
Sourdough (North) - Brainard Lake and Peaceful Valley - Colorado
Aug 7, 2024 near Nederland, CO

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Check-Ins

Aug 8, 2017
Luke U-g
went four wheeling for the first time in Steve's 17 Tundra pro ( that asshole ). it was pretty epic except he forgot to fill up with gas. so we had... 2mi
Jul 3, 2017
Jared Crockett
All those rocks are pretty challenging. But really a lot of fun and splendid scenery!
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