Mount Skylight, Mount Marcy, and Gray Peak Loop Trail

This is a very demanding hike. Hikers should plan for a full day, as it typically takes 9.5 to over 12 hours to complete. The total duration is approximately 11 hours and 20 minutes, covering about 17.5 miles (28.1 km).

No, this trail is widely regarded as very difficult to extremely difficult. It is not suitable for beginner hikers or as a first High Peak experience due to its significant mileage, substantial elevation gain, and rugged terrain. Excellent physical fitness and preparation are essential.

The loop typically starts and ends at the Van Hoevenberg Trailhead, which is a common access point for many High Peaks trails.

The terrain is rugged and varied, featuring rocky paths, steep grades, and sections requiring scrambling over cliffs and ledges. You'll encounter swampy wetlands with 'floating logs' and planks, making wet feet almost unavoidable. Over half of the trail to Mount Marcy's summit is above the tree line on bare rock, and the herd path to Gray Peak also includes steep sections and scrambles.

The loop offers stunning scenery and panoramic views. Highlights include Marcy Dam, Lake Arnold, Gray Peak, Lake Tear of the Clouds (the highest source of the Hudson River), Mount Skylight Summit, and Mount Marcy, New York's highest point.

Yes, the route also passes through sections of the Van Hoevenberg Trail, Lake Arnold Trail, Mount Marcy Trail, Avalanche Pass Trail, and Marcy Dam Truck Trail.

Dogs are generally allowed in the Adirondack High Peaks Wilderness, but they must be kept on a leash at all times. Given the extreme difficulty, rugged terrain, and long duration, this trail is only suitable for very fit and experienced dogs accustomed to challenging hikes.

While there isn't a specific permit required for hiking this loop, you are in the High Peaks Wilderness Area. Parking at the Van Hoevenberg Trailhead (Adirondack Loj) typically requires a fee. Additionally, special regulations apply to overnight camping, and bear canisters are required for food storage in the Eastern High Peaks. Always check current regulations with the NYS Department of Environmental Conservation before your trip.

The best time to hike is typically from late spring through early fall (June to October). However, be prepared for variable conditions; snow can be present even in April, and exposed sections on the peaks can be cold and windy regardless of the season. Fall offers beautiful foliage but can also bring colder temperatures and increased chances of early snow.

Beyond the significant distance and elevation, be ready for extremely rugged and wet conditions. The trail includes swampy sections with 'floating logs' and planks, making wet feet almost unavoidable. The exposed summits of Mount Skylight and Mount Marcy can be very windy and cold, even on otherwise pleasant days. Always carry appropriate layers and waterproof gear.

The primary parking area for this loop is at the Adirondack Loj, which serves the Van Hoevenberg Trailhead. This is a popular and often busy trailhead, so arriving early, especially on weekends, is highly recommended to secure a spot. There is typically a parking fee.