Elevation: 10,728 ft
Climbing and access information for this peak is on Page 297 of the book.
Long Mountain is one of four peaks named “Long Mountain” in the State of Idaho. Long Mountain can be climbed fairly easily via its East and South Ridges. I did it as part of a backpack trip in the Hayden Creek Valley along with May Mountain.
To climb Long Mountain from the south, try to find a stable route up the scree from the lakes south of Peak 10402. Once atop the ridge, excellent goat trails lead you up over Point 10402 and Point 10442 onto huge tundra flats before ascending Long Mountain’s West Summit (which has the name on the topo map) and then turning east to the East Summit, the true summit of Long Mountain.
To climb Long Mountain via the East Ridge, leave the Hayden Creek/Kadletz Creek trails at the highest point on the ridge and follow the ridge to the top over scree and talus. There is no need to climb on snow, as the book says. USGS May Mountain