Castle Lake Loop

This high-alpine trail in the Ruby Mountains features mountainous peaks, deep canyons, and glacial tarns. You'll traverse natural and unpaved paths, with some sections being steep. The area is characterized by cliffs, U-shaped valleys, and steep granite mountains, sculpted by glaciation.

The loop takes you past several stunning glacial lakes, including Castle Lake, Dollar Lakes, and Lamoille Lake. You'll also encounter Lamoille Creek and enjoy sweeping vistas of the Ruby Mountains.

No, this is a difficult hike requiring very good fitness due to its length of approximately 15.5 km and significant elevation gain of about 847 meters. Altitude can also be a factor, as Castle Lake itself sits at 9,793 feet, and other lakes are even higher.

Given its high-alpine nature, the best time to hike is typically from late spring to early fall (June through September) to avoid heavy snow and ensure accessible trails. Always check current conditions before you go.

Dogs are generally allowed in the Ruby Mountains Wilderness, but they must be kept on a leash to protect wildlife and ensure a pleasant experience for all hikers. Always practice Leave No Trace principles, including packing out pet waste.

The Castle Lake Loop is located within the Ruby Mountains Wilderness. While there are typically no entrance fees for wilderness areas, permits may be required for overnight backpacking. Check with the Humboldt-Toiyabe National Forest for the most current regulations regarding permits.

Access to the Ruby Mountains Wilderness, where this loop is located, is typically via the Lamoille Canyon Scenic Byway. Parking is available at various trailheads along the byway, such as the Lamoille Canyon Trailhead, which serves as a common starting point for routes into the wilderness.

For a difficult, high-alpine hike like this, essential items include plenty of water, high-energy snacks, layered clothing (weather can change rapidly), sturdy hiking boots, sun protection, a map and compass or GPS device, and a first-aid kit. Hiking poles are also highly recommended for steep and uneven sections.

Yes, the route incorporates sections of several official trails. You will hike along parts of the Ruby Crest National Recreation Trail, Favre Lake Trail #52, and the Lamoille Stock Trail.

Yes, the numerous glacial lakes along the route, such as Castle Lake, Dollar Lakes, and Lamoille Lake, offer refreshing opportunities for a dip, especially during warmer months. Be prepared for cold water temperatures due to their high elevation.

Given the significant elevation gain of 847 meters and the high altitude, it's advisable to start early in the day to allow ample time and avoid afternoon thunderstorms. Pacing yourself, taking regular breaks, and staying hydrated are crucial. If you're not accustomed to high altitudes, consider spending a day or two acclimatizing in the area before attempting the full loop.