Mount Marcy
- Distance14.8 miRound trip
- Summit5,344 ftElevation
- Ascent3,166 ftTotal gain
At 5,344 feet, Mount Marcy is the highest of the 46 and the top-ranked Adirondack High Peak, with summit views that stretch endlessly in every direction. The route from the Adirondack Loj is more approachable than its reputation might suggest, but it's no walk in the park. Nearly 15 miles round-trip with over 3,000 feet of climbing demands solid preparation.
The route: Adirondack Loj
The most popular and shortest approach begins at the Adirondack Loj at Heart Lake. Arrive early on weekends, because the lot fills up fast.
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0 – 2.3 mi
Loj to Marcy Dam
The trail starts out rolling and gradual. Marcy Dam makes a worthwhile shorter hike in its own right, a scenic spot to stop, snack and soak it in. Past the dam, look for the trail register where routes to several peaks branch off.
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2.3 – 3.2 mi
Marcy Dam to the Phelps junction
Continue past the register, through some lean-tos and designated campsites, and reach the Avalanche Pass trailhead in about 100 yards. Turn left and follow the trail along Phelps Brook for 0.8 miles until you hit the junction for Phelps Mountain. Bear right here to stay on the route to Marcy.
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3.2 – 5.0 mi
Climbing toward Indian Falls
At 3.6 miles the trail kicks up steeply for about half a mile, then levels for a stretch before opening up to a height of land with your first real look at Marcy, just before Indian Falls. It's a natural place to catch your breath.
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5.0 – 7.4 mi
Indian Falls to the summit
After Indian Falls, bear left at the next junction and follow a gradually rising trail for just under two miles. At 6.2 miles you'll reach the Keene Valley junction. Stay right. From there, it's 0.8 miles to the rocky open cone of Marcy's summit, with the final 0.4 miles crossing exposed rock to the true high point.
In winter
Skiers and snowshoers make the journey too, though it's significantly more challenging when the snow flies. Avoid early spring, when trails are muddy and snow lingers on the summit.
Loop option
Feeling ambitious? Consider the Gray, Skylight and Marcy loop, a longer, wilder day that bags three peaks.
Often hiked with
Marcy pairs naturally with Mount Skylight and Gray Peak for hikers ready to turn the day into a three-peak outing.
High Peak details
- Difficulty
- Moderate-to-strenuous
- 46er rank
- #1 of 46
- Range
- Marcy area
- Trail type
- Marked trail
- Trailhead
- Adirondack Loj
- Best season
- Late June through September
- Group limit
- 15 for day trips, 8 overnight
Trailhead and map
From Lake Placid, take Route 73 toward Keene and turn right onto Adirondack Loj Road. Follow it to the end. A parking fee is collected at the booth. In summer, the lots often fill before 6am on weekends and 9am on weekdays. If they are full, don't wait for a spot or park in the No Parking stretch of the road. Use the overflow parking at the end of Meadows Lane, which adds about a mile each way. ADK's website has current fees and parking tips.
Trail resources
- Conditions
- Conditions change fast. Check current trail conditions and DEC's High Peaks page before heading out.
- Parking
- ADK's hiker parking tips cover fees, overflow parking and when the lots fill.
From the PureADK shop