Adirondack Park: Big Slide Mountain

Looping 10.9 miles, this Adirondack classic scales a scenic ridge over several rock ledges before descending to Johns Brook Lodge, a backcountry hut with frontcountry services.

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Starting from “The Garden” Trailhead, this 10.9-mile loop traverses Big Slide Mountain (named for a 19th century landslide that cleared its southeast face) and makes a return trip pit stop at Johns Brook Lodge, a favorite amongst High Peaks hikers. Following signs for “The Brothers,” the hike begins its 2,800-foot ascent with a steady climb through a maple and birch forest. Bypassing the trail to Porter Mountain, the route soon picks up with a rocky and persistent climb up The Brothers, a collection or rock ledges (decorated by blueberries in summer) that offer outstanding southward views to the neighboring Rooster Comb.
Following yellow rock blazes (and blue trail markers) over The Brothers, the route continues to climb towards Big Slide, affording occasional views of its namesake scar. After 3.4 miles, hikers reach the base of the summit approach. From here it’s a 0.2-mile climb up a steep, rocky path. The summit rewards with views south to Mount Marcy and the Great Range, as well as other 4,000-foot peaks (including Algonquin and Giant to the east). Continue west along the ridge to Yard Mountain, another outcropping summit with above-the-trees views.
From Yard, this route descends a drainage traverse to Johns Brook Lodge. Administered by the Adirondack Mountain Club, the lodge (reservations required for bunks) serves meals to summertime visitors and is maintained by a caretaker in the fall. Fill up your water bottle in the faucet outside before continuing a gradual descent alongside Johns Brook for 3.4 miles back to “The Garden.”
-Mapped by Lisa Densmore, Densmore
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CONDITIONS: Check weather at Lake Placid, NY (12946).
INFO: For more information about the region, check out Visit Adirondacks.
CONTACT: Adirondack Mountain Club, Member Services Center, 814 Goggins Road, Lake George, NY 12845; (518) 668-4447;
1866 Nys Route 73
Keene Valley, NY 12943
(518) 576-2281 ‎
Jones Outfitters Ltd
2733 Main St # 2
Lake Placid, NY 12946-3318
(518) 523-3468
Eastern Mountain Sports‎
3066 New York 50
Saratoga Springs, NY 12866
(518) 580-1505‎
Noon Mark Diner
1770 Nys Route 73
Keene Valley, NY 12943
(518) 576-4499‎

Lake Placid Pub & Brewery‎
813 Main Street
Lake Placid, NY 12946
(518) 523-3813‎

45 Phila Street
Saratoga Springs, NY 12866-3211
(518) 584-4790‎


Trail Facts

  • Distance: 17.5



Location: 44.189005, -73.8160443

Alpine Garden Parking/Trailhead: Take the right trail heading up The Brothers; it’s marked with blue NYSDEC trail markers.


Location: 44.1900666, -73.8188231

Continue straight; the trail to Porter Mountain departs to the right. About 0.5 mile ahead, the trail steepens as it takes a more direct route up the spine of The Brothers ridge.


Location: 44.1889127, -73.8338757

The Brothers: A little over a mile into the trip, the hike reaches the Brothers, 3 successive rock summits. The second Brother affords 360-degree views (look west for Big Slide).


Location: 44.1822463, -73.8685727

Bear right (uphill), following signs for Big Slide and Yard Mountain. Note: Continuing straight would shave 2 miles off this route, bypassing Yard Mountain and heading directly to Johns Brook Lodge. The last 0.2 mile of the climb is steep; a few log ladders aid in ascending this steep stretch of slab. Pass a spur to a cliff top where you’ll find a fine view to the south, then climb one more rock wall to reach the summit.


Location: 44.1821869, -73.8710913

Big Slide (4,199 ft.): Enjoy above-the-trees views to the south at an open rock overlook: Mount Marcy (south) and Algonquin Peak (west) are among the prominent 4,000-footers you can see from here.
From the summit, begin descending southwest and begin traversing the ridgeline to Yard Mountain. As the trail hooks south, the route turns uphill at a gradual grade, arriving at a short spur to Yard Mountain’s summit.


Location: 44.1746814, -73.8854084

A spur trail leads up to the summit of Yard Mountain. The view is somewhat limited compared to Big Slide, but you can see the rock slides on the Gothics (to the south). Descending from Yard, the route continues following blue markers through a washed-out area; use caution.


Location: 44.1654552, -73.8817421

Turn left @ T-junction onto the Klondike Trail. The route continues descending the Black Brook drainage, now following red trail markers to the Johns Brook Lodge.


Location: 44.1588045, -73.8638558

Cross Black Brook on a double-log bridge and continue 0.1 mile to the Johns Brook Lodge, one of the Adirondack Mountain Club’s most popular shelters. Equipped with two bunkrooms, the lodge serves three meals per day to people staying there during the summer (a caretaker remains during the spring and fall). There is an outdoor faucet where you can refill your water bottle. Next, continuing northeast from the lodge, proceed past the information board, following the yellow-marked trail.


Location: 44.1604521, -73.8585465

A footbridge crossing of Johnsbrook leads to Camp Grace and Camp Peggy O’Brien, two cabins that can be reserved through the Adirondack Mountain Club. In 100 yards, continue straight past a trail that leads up to Waypoint 4. Just beyond this junction, the trail turns left away from Johns Brook before tracing it along a gradual descent back toward The Garden.


Location: 44.1777413, -73.8340044

Cross a bridge over Deer Brook.


Location: 44.1838706, -73.8222747

Stay left @ 3-way junction. Hike northeast for another half-mile to close the loop and return to the trailhead.

High Peaks View

Location: 44.1888511, -73.8340473

An overlook at the first “Brother”

Johns Brook Footbridge

Location: 44.1604415, -73.8585091

Porter Mountain Junction

Location: 44.1900666, -73.8187051

Keene Valley View

Location: 44.1913744, -73.8388538

View to the south from the third “Brother”

Trail to Big Slide

Location: 44.1822617, -73.868503

Ladder to the Summit

Location: 44.1829118, -73.8697529

One of the gnarly wooden ladders en route to the summit

Black Brook Crossing

Location: 44.1588713, -73.8640451

Johns Brook Lodge

Location: 44.1585327, -73.8629615

Bear Brook Lean-to

Location: 44.1811114, -73.8285327

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