Highlight • Lake
Hiking
5.0
(2)
Sawtooth Lake is a magnificent alpine lake nestled high in the Sawtooth Mountains of Custer County, Idaho, within the expansive Sawtooth National Recreation Area. Situated at an elevation of 2,571 meters (8,435 feet) above sea level, it is renowned as the largest alpine lake in the Sawtooths, often remaining frozen into early summer due to its high altitude. Dominating the southern edge of the lake is the impressive Mount Regan, towering at 3,110 meters (10,190 feet).
Visitors are consistently captivated by the lake's spectacular natural beauty, featuring deep blue and turquoise waters surrounded by picturesque wildflower meadows, dense pine trees, and rugged, snow-capped mountain peaks. The journey to Sawtooth Lake itself is a significant draw, offering breathtaking vistas of other alpine lakes like Alpine Lake, Alpine Peak, and the expansive Sawtooth Valley, making the effort truly rewarding.
Before embarking on your adventure, it's essential to be prepared for the moderate to strenuous terrain. The most popular trails to Sawtooth Lake typically involve a significant elevation gain, so sturdy hiking boots, appropriate layers for changing weather conditions, and plenty of water are crucial. A wilderness permit is required for entry into the Sawtooth Wilderness, which can be obtained at trailheads like Iron Creek. While camping is permitted in the National Forest, campfires are strictly prohibited at Sawtooth Lake, and "wag bags" are recommended to protect the fragile alpine ecosystem.
The best time to visit Sawtooth Lake for hiking and backpacking is generally from late spring to early autumn, once the ice has melted and trails are clear of snow. Due to its elevation, the lake often remains frozen until early summer. Beyond hiking, the broader Sawtooth National Recreation Area offers a wide array of activities, including fishing, mountain biking, and horseback riding, with winter activities like snowmobiling and Nordic skiing also popular in the region.
The most common and highly recommended route to Sawtooth Lake begins at the Iron Creek trailhead. This trail covers approximately 8 kilometers (5 miles) one way, with an elevation gain of about 520 meters (1,700 feet). The hike typically takes 5 to 6 hours round trip, passing by Alpine Lake on the way, and is considered an intermediate difficulty level, suitable for experienced hikers.
Hikers often describe the profound sense of tranquility and accomplishment upon reaching the lake, especially when witnessing the reflection of Mount Regan in its pristine waters. The vibrant wildflowers in season add a splash of color to the rugged landscape, and the sheer scale of the surrounding peaks provides a humbling experience. Many choose to use Sawtooth Lake as a base camp for further exploration into the northern Sawtooth Wilderness, extending their adventure.
Whether you're planning a day trip or an overnight backpacking excursion, exploring the routes around Sawtooth Lake offers an unforgettable experience. You can find a variety of hiking and trail running options on komoot, allowing you to plan your visit with detailed maps and community insights. Consider the Sawtooth Lake trail difficulty and distance when choosing your adventure, ensuring a safe and enjoyable journey through this iconic Idaho wilderness.
This Highlight is in a protected area
Please check local regulations for:
Sawtooth Wilderness
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January 15, 2023
Hiking

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Nearby routes
Best routes near Sawtooth Lake

26
hikers
7.76km
02:31
530m
0m
Embark on a moderate hiking adventure to Sawtooth Lake via Iron Creek Trail, a route that spans 4.8 miles (7.8 km) and climbs 1745 feet (532 metres) in elevation. You can expect to complete this journey in about 2 hours and 30 minutes. As you hike, you will pass through dense lodgepole pine forests, follow Iron Creek, and navigate switchbacks before reaching the stunning Sawtooth Lake, nestled beneath the impressive Mount Regan with its deep blue and turquoise waters. Keep an eye out for thin waterfalls and vibrant wildflowers like sego and paintbrush along the way. The terrain transitions from forested paths to more exposed, rocky sections as you gain elevation.
To plan your visit, know that the trailhead is located approximately 5.5 miles from Stanley, Idaho. The best time to hike this trail is typically from July through September, as snow can persist at higher elevations earlier or later in the season. While the trailhead offers a pit toilet, remember there is no trash disposal or water source available, so pack out everything you bring in. If you are bringing your dog, be aware that they must be leashed between July 1st and Labor Day to protect the wilderness.
This trail offers a rewarding experience within the vast Sawtooth Wilderness, a protected area known for its rugged beauty and pristine alpine environments. The prominent 10,190-foot Mount Regan serves as a dramatic backdrop to Sawtooth Lake, highlighting the region's impressive geological features. The diverse flora, from towering pines to seasonal wildflowers, adds to the natural appeal of this popular route. It is a prime example of the natural splendor that defines the Sawtooth Mountains.

1
hikers
31.2km
09:35
1,150m
1,150m
This difficult 19.4-mile hiking loop in the Sawtooth Wilderness offers stunning alpine lakes and dramatic granite spires.

5.0
(5)
117
hikers
14.8km
04:33
530m
530m
Hike the moderate 9.2-mile Iron Creek-Stanley Lake Trail, gaining 1740 feet to stunning alpine lakes and Sawtooth Range views.
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Elevation 2,600 m
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Due to its high elevation of 8,435 feet (2,571 meters), Sawtooth Lake often remains frozen into early summer, making winter access challenging. While the broader Sawtooth National Recreation Area offers winter activities like snowmobiling and Nordic skiing, the trail to Sawtooth Lake itself is typically covered in deep snow and ice, requiring specialized gear and advanced backcountry experience. It is generally not recommended for casual winter hiking.
The primary trail to Sawtooth Lake from the Iron Creek trailhead is considered intermediate difficulty, involving a significant elevation gain over 5 miles. While rewarding, it might be challenging for very young children or those new to hiking. For more family-friendly options, consider exploring other trails within the Sawtooth National Recreation Area that offer shorter distances or less elevation gain. The area around Redfish Lake, for instance, often has more accessible options.
Dogs are generally permitted on trails within the Sawtooth Wilderness, including the path to Sawtooth Lake. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all visitors. Owners are also responsible for packing out all pet waste. Always check the latest regulations at the trailhead or with the Sawtooth National Recreation Area for any updates or specific restrictions.
The main access point is the Iron Creek trailhead, which has a designated parking area. This trailhead is one of the most popular in the Sawtooth National Recreation Area, so parking can fill up very quickly, especially during peak season (summer and early fall) and on weekends. Arriving early in the morning is highly recommended to secure a spot. There is no public transport directly to the trailhead.
Due to its high alpine elevation, weather at Sawtooth Lake can be unpredictable and change rapidly, even in summer. Expect cool temperatures, especially in the mornings and evenings. Afternoon thunderstorms are common during summer months. Be prepared for strong winds, and always pack layers, including waterproof and windproof outer shells, regardless of the forecast. Snow can occur at any time of year, particularly at higher elevations.
While the main trail offers spectacular views of Alpine Lake and the Sawtooth Valley before reaching Sawtooth Lake, the area around the lake itself provides numerous opportunities for exploration. Many hikers use Sawtooth Lake as a base camp to venture further into the northern Sawtooth Wilderness, which can lead to more secluded spots and unique perspectives of Mount Regan and the surrounding peaks. Exploring the shoreline away from the main trail can also reveal quieter areas.
While there are no official restrictions against swimming in Sawtooth Lake, its waters are extremely cold year-round due to its high alpine elevation and the fact that it often remains frozen until early summer. Swimmers should exercise extreme caution due to the frigid temperatures and potential for hypothermia. Always assess conditions carefully before entering the water.
Camping is permitted in the National Forest, but specific regulations apply to protect the fragile alpine environment. Campfires are strictly prohibited at Sawtooth Lake due to its high usage and limited fuel sources. Visitors planning to camp must obtain a wilderness permit, available at trailheads. Additionally, to minimize impact, "wag bags" are recommended for human waste, and all trash must be packed out.
Sawtooth Lake is located deep within the Sawtooth Wilderness, so there are no immediate cafes, pubs, or formal accommodation options directly at the lake. The nearest services, including lodging, restaurants, and basic supplies, can be found in the nearby town of Stanley, approximately 6.8 miles (10.9 km) northeast of the Iron Creek trailhead. It's advisable to stock up on supplies before heading to the trailhead.
The trail from the Iron Creek trailhead is the most popular and direct route to Sawtooth Lake. While there aren't typically 'loop' options that start and end at Iron Creek and include Sawtooth Lake without significant additional mileage, Sawtooth Lake can serve as a hub for longer backpacking trips. From the lake, experienced hikers can connect to other trails leading deeper into the Sawtooth Wilderness, potentially forming multi-day loops with other alpine lakes and passes. These routes are more strenuous and require advanced navigation skills.