North Sourdough (#835)
ElevationAscent: 231' 71 m
Descent: -1,655' -505 m
High: 10,069' 3,069 m
Low: 8,645' 2,635 m
GradeAvg Grade: 5% (3°)
Max Grade: 19% (11°)
Current trail conditions
Popular runs nearby
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Run this trail?
Add details to help others plan their adventure.
“Singletrack leading north from the Brainard Lake Recreation Area and connecting to other trails.”— John Scalese
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 sharp climbs but for the most part, you'll be pointed down. Eventually, you'll cross a dirt road. This is a good bailout point to the Peak to Peak highway if you did not enjoy the first portion of this trail.
If you did like what you just completed, continue onward. The trail will offer more of the same as it winds its way to the terminus at Middle St. Vrain Road (CO Hwy 92).
Land Manager: USFS - Boulder Ranger District Office