The Lost River Range is a high mountain range of the Rocky Mountains, located in Central Idaho, in the Northwestern United States. [1] It runs southeast for approximately 75 miles (121 km) from the …

The Lost River Range has the grand distinction of being Idaho's highest mountain range. It boasts seven of the nine coveted “Twelver’s”. This rugged range stretches from the Snake River Plain in the south …

Jun 18, 2025 · The Lost River Ranger District and Recreation Region encompasses some of the most spectacular peaks and valleys on the Salmon-Challis. This is the area in and around Antelope …

The Lost River Range stretches 70 miles from northwest to southeast between Challis, ID and Arco, ID. The Big Lost River Valley and Salmon River flank the range on the west. The Little Lost River and …

Mar 3, 2025 · Idaho's Lost River Range offers a unique blend of natural beauty, adventure, and solitude. This region, often overlooked, provides stunning mountain views, challenging hiking trails, and …

Dec 29, 2025 · Browse the best walks in the Lost River Range and see interactive maps of the top 10 hiking trails and routes.

Oct 5, 2024 · The Lost River Range is Idaho’s highest and most rugged mountain range, offering a wild and challenging landscape for outdoor enthusiasts. With towering peaks, deep valleys, and remote …

Jan 3, 2026 · Lost River Mountain is 12,078 feet high and number 6 of the 9 highest 12k mountains in Idaho. This is steep the whole way up and down with lots of sliding near the top because of the angle …

Feb 27, 2024 · The Lost River Range in the Salmon-Challis National Forest (SCNF) is the roof of Idaho—home to the state’s highest peak (Borah Peak) and six of Idaho’s nine peaks over 12,000 …

Assuming you don't get a flat tire, it takes an hour or so of high-clearance dirt road driving to reach either the east fork, or west fork trailheads. But once there, the scenery is spectacular, offering unique …