Sikkim Green Lake Trek
Home/Treks/Sikkim Green Lake Trek
Difficult

Sikkim Green Lake Trek

Sikkim, India
Starting from
--
per person
0 operators available
Duration11-13 Days
Max Altitude5050 m
Trek Distance84 km
Starting PointLachen

Itinerary

Day1

Gangtok to Lachen

120 km Drive
6-7 hours
2750 m

Drive through North Sikkim's scenic mountain roads.

Reach Lachen and prepare for the trek.

Complete permit formalities and acclimatization walk.

Day2

Lachen to Zema

12 km
5-6 hours
3050 m

Enter the Zemu Valley region.

Walk through forests and river crossings.

Camp beside the valley.

Day3

Zema to Yakthang

11 km
6 hours
3650 m

Gradual ascent through alpine forests.

Enjoy views of surrounding ridgelines.

Camp at Yakthang meadow.

Day4

Yakthang to Rest Camp

10 km
5-6 hours
3950 m

Follow the Zemu Glacier valley upstream.

Observe increasingly dramatic mountain scenery.

Camp at Rest Camp.

Day5

Rest Camp to Green Lake

12 km
6-7 hours
5050 m

Reach Green Lake beneath the Kanchenjunga massif.

Witness panoramic views of Zemu Glacier and surrounding peaks.

Establish base camp near Green Lake.

Day6

Green Lake Exploration Day

6 km
4 hours
5050 m

Explore glacial viewpoints and surrounding moraines.

Photography and acclimatization day.

Observe the eastern face of Kanchenjunga.

Day7

Green Lake to Rest Camp

12 km
5 hours
3950 m

Begin the return journey down the valley.

Enjoy descending views of the glacier system.

Camp at Rest Camp.

Day8

Rest Camp to Yakthang

10 km
5 hours
3650 m

Descend through alpine meadows.

Pass traditional yak grazing areas.

Camp at Yakthang.

Day9

Yakthang to Zema

11 km
5 hours
3050 m

Continue descending through forested terrain.

Follow the Zemu River valley.

Overnight at Zema.

Day10

Zema to Lachen

12 km
5 hours
2750 m

Complete the trek back to Lachen.

Celebrate completion of the expedition.

Prepare for return to Gangtok.

Day11

Lachen to Gangtok

120 km Drive
6-7 hours
1650 m

Drive back to Gangtok.

End of the Green Lake expedition.

Additional buffer day may be used for weather contingencies.

Packing List

Sikkim Green Lake Trek: The Ultimate Expedition to Kanchenjunga's Hidden Wilderness

The Sikkim Green Lake Trek is widely regarded as one of the most remote and spectacular trekking adventures in India. Situated in North Sikkim, this challenging expedition leads trekkers deep into the pristine wilderness of the Kanchenjunga National Park, culminating at Green Lake, a glacial campsite located beneath the towering eastern face of Kanchenjunga. Unlike the more popular Goechala route, the Green Lake Trek remains largely untouched by mass tourism due to strict permit requirements and its remote location. The result is an extraordinary Himalayan experience that combines untouched landscapes, rich biodiversity, high-altitude meadows, glacial rivers, and some of the closest views of Kanchenjunga available in India.

Following Ancient Trails Through North Sikkim

The journey typically begins from Lachen, one of North Sikkim's most picturesque mountain settlements. From here, trekkers follow historic yak-herding routes through dense forests of pine, fir, juniper, and rhododendron. The trail gradually ascends along the Zemu Valley, one of the longest and most significant glacial valleys in the Eastern Himalayas. Traditional stone shelters, alpine grazing grounds, and remote campsites provide a glimpse into a region that has changed little over centuries. Every stage of the trek reveals increasingly dramatic views of snow-covered peaks and glacial landscapes.

The Magnificent Zemu Glacier and High Himalayan Landscapes

One of the highlights of the Green Lake Trek is its proximity to the famous Zemu Glacier, the largest glacier in the Eastern Himalayas. As trekkers gain altitude, the landscape transforms from lush forests into vast alpine meadows and rugged moraine fields. Crystal-clear rivers fed by glacial meltwater cut through the valley, while towering peaks dominate the horizon. The scenery becomes increasingly dramatic near Green Lake, where massive Himalayan giants including Kanchenjunga, Siniolchu, Simvo, and Twin Peaks rise directly above the campsite. Few trekking destinations in India offer such sustained high-mountain scenery.

Wildlife and Biodiversity in a Protected Himalayan Ecosystem

The trek passes through one of the most ecologically important regions of the Himalayas. Kanchenjunga National Park supports an impressive range of flora and fauna, including red pandas, Himalayan black bears, blue sheep, musk deer, and numerous bird species. During spring, rhododendrons bloom across entire hillsides, creating vibrant colors against the backdrop of snow-covered mountains. The park's protected status has helped preserve its ecosystems, making the trek a paradise for wildlife enthusiasts, botanists, and photographers seeking untouched Himalayan landscapes.

Why Green Lake Is Considered One of India's Finest Treks

Green Lake Trek is often described as a true Himalayan expedition rather than a conventional trek. Its combination of remoteness, challenging terrain, exceptional mountain views, and wilderness character sets it apart from most trekking routes in India. Reaching Green Lake rewards trekkers with awe-inspiring views of Kanchenjunga's eastern face and the vast Zemu Glacier system. The journey demands excellent fitness, patience, and proper acclimatization, but the rewards are unmatched. For serious trekkers seeking one of the most authentic and least-crowded Himalayan experiences, Green Lake remains a benchmark adventure in the Indian Himalayas.

Best Month to Visit

Best
Moderate
Avoid

Nearest airport

Pakyong Airport

Nearest railway

New Jalpaiguri Railway Station

Friday 12 Jun
Start point12° / 17°
Drizzle
17°
04:39
18:31
74%
Summit-3° / 3°
Snow
3°
04:40
18:33
86%
Hourly temperature°C
Main trek location
Starting point

Frequently asked questions

Everything you need to know about this trek, including route conditions, transport, preparation, weather, permits, and trekking difficulty.

The trek is considered difficult due to its high altitude, remoteness, and long duration.

Green Lake is situated at approximately 5,050 meters above sea level.

Yes. Special permits are mandatory as the trek passes through protected and restricted areas of North Sikkim.

No. Previous high-altitude trekking experience is strongly recommended.

April to May and October to November generally provide the best weather and mountain visibility.

Yes. Proper acclimatization is essential because the trek exceeds 5,000 meters.

Kanchenjunga, Siniolchu, Simvo, Twin Peaks, and several peaks surrounding the Zemu Glacier are visible.

Yes. The trek requires authorized local guides due to permit regulations and remoteness.

Yes. Most nights are spent at remote campsites with no permanent accommodation facilities.

It provides one of the closest and most dramatic views of Kanchenjunga and the Zemu Glacier while remaining one of India's least-crowded Himalayan expeditions.

Mountain trail

Browse all treks in one place

Discover trekking routes across India with filters for duration, weather, difficulty, altitude, and season.

20+
Regions
100+
Treks
All Seasons
Year Round
Trek smarter

Compare weather, route conditions, transport access, and difficulty.

More Treks Nearby This

Explore all treks
Trek Safety & Etiquette

Essential trekking guidelines

Responsible trekking protects mountains, wildlife, local culture, and your own safety. Follow these guidelines before heading into the trails.

Obtain Required Permits

Many trekking destinations require official permits from local authorities. Apply early to avoid fines or denied entry.

Respect Nature and Wildlife

Follow Leave No Trace. Avoid littering, loud noise, and disturbing wildlife or fragile vegetation.

Travel with a Guide

Some high-altitude and border routes legally require certified guides for navigation and safety.

Camp at Approved Sites

Unauthorized camping and bonfires can damage ecosystems and may violate local regulations.

Respect Local Culture

Dress respectfully, ask before photographing locals, and honor regional customs and sacred places.

Follow Weather Advisories

If authorities halt trekking due to weather or hazards, comply immediately for your safety.

Stay Within Allowed Zones

Do not cross restricted or protected boundaries without official permissions.

Follow Group Instructions

Stay with your group, maintain pacing discipline, and avoid trekking alone on unknown trails.