Highlight • Lake
Hiking
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Ardeth Lake is a stunning alpine lake nestled high in the Sawtooth Mountains within the Sawtooth National Recreation Area in Boise County, Idaho. Situated at a surface elevation of 8,228 feet (2,508 meters) above sea level, this glacial lake is a prominent natural feature in the central Sawtooth Wilderness, offering breathtaking views and a true backcountry experience.
Visitors are consistently drawn to Ardeth Lake for its pristine, crystal-clear waters and the dramatic mountain scenery that surrounds it. The towering Glens…
This Highlight is in a protected area
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Sawtooth Wilderness
Tips
Nearby routes
Best routes near Ardeth Lake
1
hikers
10.1km
03:09
390m
390m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
Details
Informations
Elevation 2,510 m
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Saturday 14 March
-2°C
-15°C
72 %
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Max wind speed: 31.0 km/h
Hiking to Ardeth Lake is generally considered hard due to significant elevation gain and descent, as well as the high-altitude environment. The Ardeth Lake trail itself is a 2.4-mile singletrack, but reaching the lake often involves longer, more strenuous approaches through the Sawtooth Wilderness.
Ardeth Lake is a common destination within the extensive trail network of the Sawtooth Wilderness. It's frequently included in multi-day backpacking loops that connect to other stunning alpine lakes like Vernon and Spangle Lakes. While the lake itself has a 2.4-mile singletrack, the overall journey typically involves longer trails from various trailheads.
Access to Ardeth Lake is primarily from trailheads in the Sawtooth Valley, reachable via State Highway 75, or from the Grandjean trailhead off State Highway 21. Parking is available at these trailheads. A wilderness permit is required for entry into the Sawtooth Wilderness, which can be obtained at the trailheads.
Given its high elevation (8,228 feet) and the
Given its high elevation (8,228 feet) and the classification of trails as 'hard' with significant elevation changes, Ardeth Lake is generally not recommended for families with young children or beginner hikers. The challenging terrain and potential for lingering snow into early summer require a good level of fitness and experience.
Yes, dogs are generally permitted on the Ardeth Lake trail and within the Sawtooth Wilderness. However, it's crucial to keep them under control, preferably on a leash, and to follow all wilderness regulations regarding pets, including packing out all waste.
Due to its high elevation of 8,228 feet, Ardeth Lake experiences severe winter conditions. The lake often remains frozen well into early summer, and trails can be covered in deep snow, making access extremely challenging and requiring specialized winter gear and experience. Winter visits are generally only for experienced backcountry enthusiasts.
The most prominent natural feature is Glens Peak, which rises to 10,053 feet (3,064 meters) and dominates the southern end of the lake, offering breathtaking views. The lake itself is a glacial lake known for its crystal-clear water, set within the pristine environment of the central Sawtooth Wilderness.
Ardeth Lake is located deep within the Sawtooth Wilderness, a protected area emphasizing primitive recreation. Therefore, there are no immediate amenities, cafes, or accommodation directly at the lake. Visitors should plan to be self-sufficient. The nearest services would be in towns like Stanley, approximately 18 miles north.
Given the challenging terrain and high-altitude environment, hikers should bring plenty of water, high-energy snacks, appropriate layers of clothing for varying weather, navigation tools (map, compass, or GPS), a first-aid kit, and sun protection. For multi-day trips, backpacking gear, including shelter and cooking equipment, is essential. Always remember to pack out everything you pack in.
While there are no explicit prohibitions against swimming, Ardeth Lake's water is extremely cold, often remaining frozen into early summer due to its high elevation (8,228 feet). Any swimming would be considered wild swimming and should only be attempted by experienced individuals who are prepared for very cold water temperatures.
The duration of a hike to Ardeth Lake varies significantly depending on the chosen starting trailhead and the specific route. While the Ardeth Lake trail itself is 2.4 miles, the overall journey from common access points can be a full-day strenuous hike or part of a multi-day backpacking trip, especially if connecting to other lakes in the Sawtooth Wilderness.