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    Snowshoeing/United States/Colorado/Indian Peaks Wilderness

    Sourdough Trail

    Difficulty
    This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
    Hard
    Duration
    This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
    4-6h
    Distance
    This reflects the return distance of this route as measured by the GPS file.
    18.1 km
    Elevation
    This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
    561 m
    User Ratings
    These ratings are completed by users who have completed this trail and not subject to reviews by 10Adventures.
    Overall Rating
    This is the average user-submitted overall rating on a scale of 1 to 10, with 10 being the highest.
    10.0
    Physical Difficulty
    This is the average user-submitted rating on the physical difficulty of this route. In general, green is beginner, blue is intermediate, black is advanced/most difficult and double-black is expert-only. It is recommended that users build up to black and double-black routes.
    Intermediate (Square)
    Suitable for intermediates who are ready for a little bit more adventure.
    Technical Difficulty
    This is the average user-submitted rating on the technical difficulty of this route. In general, green is beginner, blue is intermediate, black is advanced/most difficult and double-black is expert-only. It is recommended that users build up to black and double-black routes.
    Easy (Circle)
    Suitable for beginners, families, young children, and those looking for a casual adventure.
    Read Reviews
    Directions to Trailhead
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    Panorama on Sourdough snowshoe trail in Indian Peaks, Colorado

    Sourdough Trail is a popular cross-country skiing and snowshoeing trail, conveniently off of the Peak to Peak Hwy. It is a beautiful out and back climb through Roosevelt National Forest!

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    Route Description for Sourdough Trail

    The Sourdough Trail is a straightforward out-and-back trail that travels through the beautiful Roosevelt National Forest. From the trailhead, the trail steadily climbs and gains elevation from its starting point of 2,804 m as it traverses across the mountain slopes. This is a perfect cross-country ski trail and is popular for snowshoeing and fat biking.

    Approximately a third of the way up the trail, you will cross over a small bridge over Fourmile Creek. The end of the trail puts you at the closed gates to Brainard Lake Recreation Area within the Indian Peak Wilderness. The way back is to follow your tracks back down to the trailhead.

    Insider Hints for Sourdough Trail

    Getting to the Sourdough Trail Trailhead

    From Boulder take CO-119/Boulder Canyon Drive to the town of Nederland. At the traffic circle, take the 2nd exit onto W 2nd St. Continue onto CO-72 Peak-to-Peak Highway towards Estes Park for 10.9 km. There will be a Camping & Hiking sign indicating a left turn towards Rainbow Lakes onto Co Rd. 116. Trailhead parking is on the left side of the road approximately 0.8 km down the dirt road.

    Route Information

    • When to do

      Late November to Early April

    • Backcountry Campsites

      Camping is allowed in the backcountry, no permit required.

    • Toilets

      Yes, primitive pit toilet

    • Pets allowed

      Yes - On Leash

    • Family friendly

      No

    • Route Signage

      Good

    • Crowd Levels

      Low

    • Route Type

      Out and back

    Sourdough Trail Elevation Graph

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    Sourdough Trail Reviews

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