Upper Pahsimeroi River

Trail Overview

The Upper Pahsimeroi River is absolutely beautiful. It is affectionately known as the 'Swiss Alps' by the locals. There are many hiking trails up into the wilderness areas of the Lost River Range. This area shows the highest peaks of the Lost River Range which is the highest in Idaho at more than 12,000 feet. This area is located close to Mackay, Idaho, which makes a great basecamp for exploring here. There are two ways to reach here from Mackay. They are Pass Creek and Doublespring Pass. The road is rocky and slow, but not overly difficult.