Sourdough Trail (South)
in
Trail Meter:
Fair
Sourdough South is a rolly polly lungbuster, traveling north-south and paralleling (but nowhere near) the Peak to Peak Highway. Solitude and suffering await you... ok, it's really not that bad if you're mentally prepared for high altitude riding with some loose rocks thrown in there.
You can start this trail from the south at the CU Research Center / Rainbow Lakes trailhead, and from the north at the Brainard Lake trailhead.
| Attachment | Size |
|---|---|
| Sourdough Trail (South) GPX File | 142.45 KB |
| Sourdough Trail (South) Google Earth File | 5.28 KB |
Map to Trail Head:
View Boulder County Trailheads in a larger map
T: 6 A: 7 C: 6
Learn more about BMA Rating3
5.9 mi.
1350 ft.

 Elevation.png)

Comments
Trail condition updated to Fair.
From redstonecyclery via Twitter: In case you were wondering, Sourdough/SSV loop is ON. #boco_trails #tuesnightride http://t.co/dxVCJxqdtb
From nl_photo via Twitter: Uhh yeah, gonna be awhile before Sourdough is ready for mtb action. Today near Brainard Lake. #boco_trails #snow http://t.co/mpebN3jFPM
renewed winter conditions after a large snowstorm, trails probably need to be repacked. Please update when you ride!
From the South end covered with 100% snow. Made it with good snow tires to maybe 2 miles beyond the second bridge. The snow there is getting too deep. Fun ride nonetheless.
mixed dry and snow
From redstonecyclery via Twitter: Beaver Res Rd/Sourdough/SSV loop tonight for Tuesday nighter was fantastic. The loop has a little snow but is in great shape! #boco_trails
From MorganLommele via Twitter: Does anyone know what condition Sourdough trails are in? #boco_trails
Still a few trees to climb over but it is mostly good.
From the south trailhead, there is about 1 mile of dry trail. After that point there are big snow drifts. Give it a couple weeks still