Scarlet Mountain, Basin Creek, and Pearl Basin Loop

This trip includes climbing three prominent peaks, meandering along several of the Bob’s prominent rivers and streams, and exploring a rarely visited alpine lake.

Trip Details

Trip Date:

08/06/2018 - 08/13/2018

Trip Type:

Stock Supported

Number of Days/Nights:

8 Days - 7 Nights



Distance with Day Hikes:



Price Per Person:





  • Immense river valleys
  • Plentiful fishing opportunities
  • Peak climbing
  • Historic fire lookouts
  • High elevation scenic camping in Pearl Basin


Discover the heart of the Bob Marshall Wilderness on this breathtaking loop. This trip includes climbing three prominent peaks, meandering along several of the Bob’s prominent rivers and streams, and exploring a rarely visited alpine lake.

Starting and ending along the South Fork of the Sun River, we explore Grizzly Basin tucked beneath the towering Hoadley Reef, summit Scarlet Mountain (8164’), and discover the hidden Ahorn Lake. We head down into the lush meadows and cool waters of Basin and Danaher Creeks that flow into the South Fork of the Flathead River, climbing Jumbo Mountain (8284’) on a layover day. From here, we make our way to the high alpine Pearl Basin, sitting east of the storied Flathead Alps, with Twin Peaks towering to the east and Junction Mountain rising to the west.

Our final few days are spent along the West Fork of the Sun River, where we have the opportunity to fish, relax, or climb to Prairie Reef Lookout (8858’) before making our way back to the South Fork trailhead.

This is an ideal trip for those that seek a true sampling of what the Bob has to offer: mountain top vistas, immense river valleys, adventure, and the solace of wild places. Please call or email for more details.

Please call or email for more details.
(406) 289–0863


Trip deposits are non-refundable.  The remainder of the trip price is due on May 15th unless otherwise specified and is non-refundable at that time.  We STRONGLY encourage purchasing trip insurance for reasons including, but not limited to health issues, weather events such as wildfires/smoke/floods, and necessary route changes that may impact your ability or desire to participate in the trip.   We recommend the Gold or Platinum Plan by TravelGuard.

Trip Rating Definitions

5 - 8 mile travel days along river grade trail with some undulating terrain, but no major changes in elevation. All hiking is on maintained trail.

6 – 10 mile travel days with some of those days requiring changes in elevation of 500 – 1200 ft. over several miles. Short portions of route may be off-trail.

Moderately Strenuous
7 – 12+ mile travel days with some days having a combined change in elevation totaling 2,500 feet, or more, over several miles. Off-trail hiking and routing finding with short portions of limited exposure possible.

7 – 12+ mile days with regular changes in elevation over a few miles. Frequent off-trail hiking over uneven terrain with areas of exposure and route finding involved. Previous backcountry experience required.

*Please note these descriptions are used for travel days only and are our attempt to provide a rating for the overall trip difficulty. On layover days we will offer optional hiking opportunities that may not be in keeping with the rest of the trip difficulty rating.

Additionally, changes in elevation are meant to represent the days’ starting and ending elevations not necessarily the total elevation lost and gained throughout the course of the day. If you have questions or concerns regarding trip difficulty and your abilities please contact us.