Hidden Lake

Hidden Lake is located within the Sawtooth Wilderness, so a wilderness permit is required for all visitors. These permits are free and can be obtained at registration boxes located at trailheads or wilderness boundaries before you begin your hike. It's essential to fill one out to help manage and protect this pristine natural area.

The hike to Hidden Lake via Sawtooth National Forest trail 154 is generally considered a challenging alpine trek. While the exact length and elevation gain can vary depending on your starting point, expect a significant ascent over rugged terrain. Hikers should be prepared for a full day's outing and possess a good level of fitness. Sturdy footwear is essential.

As you approach Hidden Lake, you'll be treated to increasingly dramatic views of the Sawtooth Mountains. The lake itself, nestled beneath the majestic Mount Cramer, offers a stunning panorama. While there aren't specific named landmarks along the trail, the entire journey provides numerous viewpoints showcasing the rugged alpine landscape and the pristine wilderness.

The optimal time to visit Hidden Lake is typically during the summer and early fall months. This period, generally from late June or early July through September, ensures that the snow has melted from the higher elevations and the trails are clear and accessible. Outside of these months, snow can linger, making the trail difficult or impassable, and potentially requiring specialized winter hiking gear.

Given its location in the Sawtooth Wilderness and the challenging nature of the alpine trail (Sawtooth National Forest trail 154), Hidden Lake is generally not recommended for families with very young children or those unaccustomed to strenuous hiking. The terrain is rugged, and the elevation gain can be significant. Older, experienced children who are strong hikers may enjoy the adventure, but careful consideration of their endurance is advised.

As Hidden Lake is located within the Sawtooth Wilderness, dogs are generally permitted on trails. 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 before your visit, as policies can change.

Due to its remote location within the Sawtooth National Recreation Area, there are no public transportation options directly serving the trailheads for Hidden Lake. Visitors will need to rely on personal vehicles to reach the starting point of their hike. Plan for adequate parking, especially during peak season.

At an elevation of 2648 meters (approximately 8,688 feet), weather conditions at Hidden Lake can be highly variable and change rapidly, even in summer. Expect cooler temperatures than at lower elevations, strong winds, and the possibility of sudden rain showers or even snow, particularly in the shoulder seasons. Always pack layers, including waterproof and windproof outer shells, regardless of the forecast.

While the primary access to Hidden Lake is via Sawtooth National Forest trail 154, the surrounding Sawtooth Wilderness offers a vast network of trails. Many hikers combine the Hidden Lake trail with other routes to create longer backpacking trips or explore nearby alpine lakes and peaks. For detailed options and to plan your adventure, you can use komoot to discover various hiking and trail running options in the area.

While there are no explicit prohibitions against swimming in Hidden Lake, visitors should be aware that it is an alpine lake fed by snowmelt. The water is extremely cold, even in summer. Swimmers should exercise caution due to the low water temperatures and the remote location, which means immediate assistance may not be available in an emergency. Always prioritize safety.

The Sawtooth Wilderness is vast and offers many stunning alpine lakes and trails that may be less crowded than popular destinations. While specific alternatives depend on your desired difficulty and distance, exploring other lakes accessible from less-traveled trailheads or opting for mid-week visits can provide a more solitary experience. Researching different areas within the Sawtooth National Recreation Area can reveal many hidden gems.