Sourdough Trail (South)

Trail Meter: 

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. If you cross Brainard Lake Road, then the Sourdough trail continues - we call that section Sourdough North because this section of trail has a pretty different character from Sourdough South.

Sourdough Trail (South) GPX File142.45 KB
Sourdough Trail (South) Google Earth File5.28 KB
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Sourdough Trail (South) Click on image to enlarge
Sourdough Trail (South) Click on image to enlarge

T: 6 A: 7 C: 6

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5.9 mi.
1350 ft.


Trail Meter: Fair»Poor

Still deep snow drifts after the first mile from Rainbow Lakes trailhead. Gonna need a few more weeks.

Getting slushy but still rideable to the peace Bridge.

Trail Meter: Good»Fair

Good for the first mile from the south trailhead, so-so for the second mile, then unpacked/unrideable snow to the high point on the trail. Wait for some more traffic to pack this trail down and ride at Brainard.

Trail Meter: Fair»Good

Good snow biking. Tricky in places, but very rideable. Mostly hiking boot packed trail.

Decent pack throughout. A few drifts and off-camber washes. Snow is getting soft and slippery with the warm weather. 80-90% rideable, better riding north-to-south.

Trail Meter: Good»Fair

50/50 ride and walk on fat bike. The wind has created a lot of off camber sections and sugar snow.

Almost all rideable January 30.
That might change with todays snowfall.

Trail Meter: Fair»Good

Fatbike rideable (and fast!) all the way from Rainbow Lakes trailhead to intersection with Brainard Lake Road. About a mile of slightly rutted, harder to ride conditions past the Peace Bridge, but not bad, and quickly gets wider and better packed closer to Brainard area. Git sum!

Packed in nicely for fast fat biking. Have fun.

Trail Meter: Fair»Good

Almost entirely rideable on a Fat.
Good packed base.

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