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- South Twin Mountain
4,902 ft · White Mountains, New Hampshire
South Twin Mountain
South Twin Mountain is a 4,902 ft peak in the White Mountains, New Hampshire. The standard route is the North and South Twin Mountain: 10 mi, 3,658 ft of gain, Class 2.
South Twin Mountain at a glance
- Elevation4,902 ft1,494 m
- RouteNorth and South Twin MountainClass 2
- Distance10 mi3,658 ft gain
- Time7 – 9 hrsHard effort
- SeasonJun – Oct
- RangeWhite MountainsNew Hampshire
Climbing the North and South Twin Mountain
From Route 3 near Twin Mountain, New Hampshire, the Gale River Trail climbs to Galehead Hut, then the Twinway makes a short, steep pull to the open summit. Longer through-routes come over North Twin. The summit offers some of the best views in the Whites across the Pemigewasset Wilderness. This is a long day deep in the backcountry, so start early and carry plenty of water. Upper sections are steep and rocky, slick when wet. Often combined with Galehead and the Bonds by strong hikers.
Gear and hazards
What to bring
Backpack (20–30 L)
Water
Water Filter
First-Aid Kit
Whistle
Offline Maps- Compass
GPS Device
Headlamp
Power Bank
Hiking Boots
Trekking Poles
Base Layer
Midlayer
Insulated Jacket
Hardshell Jacket
Warm Hat
Light Gloves
Buff
Sun Hat
Sunglasses
Sunscreen
What to watch for
- High winds
- Storms
- Low visibility
- Cold summit conditions
- Rapid weather shifts
- Slippery terrain
- Insects
South Twin Mountain on Yak
Climbers have shared 6 climbs of South Twin Mountain on Yak. Read their trip reports and recent conditions in the app
Quests with South Twin Mountain
New England 4,000ers
NH 48Peaks near South Twin Mountain
Frequently asked questions
How tall is South Twin Mountain?
South Twin Mountain is 4,902 feet (1,494 m) tall. It is in the White Mountains, New Hampshire.
How does South Twin Mountain rank among the New England 4,000ers?
At 4,902 feet, South Twin Mountain is the 9th highest of the 67 New England 4,000ers. The highest is Mount Washington.
How hard is it to hike South Twin Mountain?
The North and South Twin Mountain is Class 2, which means off-trail hiking with some use of your hands for balance. Yak rates the overall effort hard: 10 miles with 3,658 feet of elevation gain.
How long does it take to hike South Twin Mountain?
Most people take 7 – 9 hours round trip on the North and South Twin Mountain, covering 10 miles with 3,658 feet of elevation gain, so most people do it in a day.
Can a beginner hike South Twin Mountain?
The North and South Twin Mountain needs no climbing skills, but it is a hard day: 10 miles with 3,658 feet of elevation gain. Build up on shorter hikes first, start early and carry plenty of water and layers.
When is the best time to hike South Twin Mountain?
The usual hiking window is June to October. Outside it, expect snow, storms or closed access, and check the summit forecast before you go.
What is the trailhead elevation for South Twin Mountain?
The North and South Twin Mountain starts at about 1,840 feet, roughly 3,062 feet below the summit.
Climb South Twin Mountain with Yak
Plan your route on a topo map, check the summit forecast, then log your climb and see what is left on your list