Peak 11402 (Big Boy Peak)

Elevation: 11,402 ft
Prominence: 342

Climbing information for this peak is found on page 309. It is not in the book’s index for some reason.


Big Boy Peak sits south of The Riddler on the main Lemhi crest. It is seldom climbed as climbers focus on nearby Diamond Peak. In addition from the route information in the book. The peak has been climbed via a traverse from the Riddler. Details of this route are unknown but from personal observation, the top,of the connecting ridge would be difficult to follow. It looks as though ledges could be connected on the steep eastern slopes between the two peaks to make a high traverse. You could also follow the standard route on The Riddler to around the 10,200 foot contour and then climb steep talus to the summit.

Larry Prescott climbed the east ridge which looks like a great option for ascending the peak. Use the link at the bottom of this page to read his full trip report or go to the East Ridge Route (Class 3) page for a condensed version.

The upper east ridge of Big Boy Peak. Larry Prescott Photo

The upper east ridge of Big Boy Peak. Larry Prescott Photo

Big Boy Peak. George Reinier Photo

Big Boy Peak. George Reinier Photo

Big Boy Peak from The Riddler. Larry Prescott Photo

Big Boy Peak from The Riddler. Larry Prescott Photo

Big Boy Peak from,the east. Larry Prescott photo

Big Boy Peak from,the east. Larry Prescott photo

Larry Prescott's GPS track. Use the link below to reach his trip report.

Larry Prescott’s GPS track. Use the link below to reach his trip report.

Mountain Range: Lemhi Range

Longitude: -113.078681   Latitude: 44.116612

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