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World’s 5 Tallest Mountains

The world's highest mountains stand as monumental testaments to Earth's geological power, rising majestically above the clouds in the heart of Asia.

Places Nepal
Dec 5, 2025
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These colossal peaks, Everest, K2, Kanchenjunga, Lhotse, and Makalu all exceeding 8,000 meters, have captivated explorers, mountaineers, and adventurers for centuries.


This comprehensive guide explores the five tallest mountains on Earth, their fascinating characteristics, and the incredible trekking opportunities that await those who dare to venture into their realm.

Ranking the Five Tallest Mountains

The designation of "eight-thousander" refers to any mountain reaching above 8,000 meters in elevation—a threshold that represents one of mountaineering's most formidable challenges.

Globally, only 14 peaks achieve this distinction, making summits above this altitude extraordinarily rare and dangerous pursuits. The Himalayas dominate this exclusive list, with Nepal claiming remarkable prominence as the home of eight of these peaks, including four of the five tallest mountains on Earth.

This concentration underscores the dramatic geological processes that shaped the Himalayan range through the collision of continental plates.

RankMountainHeightFirst SummitFatality Rate
1Mount Everest8,848.86 / 29,032May 29, 19530.67%
2K28,611 / 28,251July 31, 195414-25%
3Kanchenjunga8,586 / 28,169May 25, 19554.5%
4Lhotse8,516 / 27,940May 18, 19562-3%
5Makalu8,485 / 27,838May 15, 19555.7%

Understanding the Giants: The Five Highest Mountains

All five of the world's tallest peaks are located within the Himalayan and Karakoram mountain ranges, spanning the borders of Nepal, Tibet, Pakistan, and India. 


These mountains were formed approximately 50 million years ago when the Indian tectonic plate collided with the Eurasian plate, creating the dramatic uplift that continues today.


1. Mount Everest (Sagarmāthā/Chomolungma) - 8,848.86 meters (29,031.7 feet)

The Crown of the World

Mount Everest reigns supreme as Earth's highest point above sea level. Straddling the border between Nepal and Tibet, this iconic peak has captured human imagination since it was officially declared the world's highest mountain in 1856. 


The mountain's height was recently updated in 2020 following a joint survey by Chinese and Nepalese authorities, establishing its elevation at 8,848.86 meters.


Local Names and Significance:

-Sagarmāthā (Nepali): Meaning "Goddess of the Sky"

- Chomolungma (Tibetan): Translating to "Goddess Mother of the World"


The mountain holds profound spiritual significance for local Sherpa communities, who have lived in its shadow for generations. Their mountaineering expertise has been instrumental in making Everest accessible to climbers from around the globe.

Trekking Routes to Everest Base Camp

The Everest Base Camp trek is arguably the world's most famous trekking route, attracting thousands of adventurers annually who seek to stand at the foot of this legendary giant.

Trek the Everest Base Camp Trek
This classic trek takes you through the heart of the Khumbu region, past vibrant Sherpa villages, ancient monasteries, and towering Himalayan peaks.
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Classic Everest Base Camp Trek

Duration: 14 days

Maximum Elevation: 5,364 meters at Everest Base Camp (5,545 meters at Kala Patthar)

Difficulty: Moderate to Challenging

Best Season: March to May and September to November


Route Highlights:

- Lukla (2,860m): The dramatic gateway, featuring the world's most thrilling airport

- Phakding (2,610m): First night's rest along the Dudh Koshi River

- Namche Bazaar (3,440m): Vibrant Sherpa capital with markets, bakeries, and stunning mountain panoramas

- Tengboche (3,860m): Home to the region's most significant monastery with breathtaking Everest views

- Dingboche (4,410m): Important acclimatization stop with magnificent valley vistas

- Lobuche (4,940m): Final village before base camp, surrounded by towering peaks

- Gorak Shep (5,160m): Highest settlement with teahouses, launching point for base camp

- Kala Patthar (5,545m): Premier viewpoint offering unobstructed Everest panoramas


Trail Experience:

The journey begins with a thrilling flight from Kathmandu to Lukla. Trekkers follow the Dudh Koshi River through lush rhododendron forests, cross numerous suspension bridges adorned with prayer flags, and pass through traditional Sherpa villages. 


The trail ascends through Sagarmatha National Park, a UNESCO World Heritage Site, offering encounters with diverse flora and fauna.


Above treeline, the landscape transforms into a stark, rocky wilderness with glacial moraines and alpine desert. The final push to base camp involves traversing the lateral moraine of the Khumbu Glacier, where expedition tents dot the landscape during climbing season.

Alternative Routes

  1. Three Passes Trek (17 days): An extended adventure crossing three high passes: Kongma La (5,535m), Cho La (5,420m), and Renjo La (5,345m), combining Everest Base Camp with the spectacular Gokyo Lakes.
  2. Gokyo Lakes Trek (10-14 days): A quieter alternative featuring turquoise glacial lakes and ascent of Gokyo Ri (5,357m) for panoramic views of Everest, Lhotse, Makalu, and Cho Oyu.
  3. Helicopter Return Option (8 days trekking): Trek to base camp and fly back to Lukla via helicopter for breathtaking aerial views of the Himalayan giants.

Trek the Everest Base Camp Trek by Road
Experience Everest—No Flights, Just Pure Adventure.
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Everest Region FAQs

Q: What is the best time to trek to Everest Base Camp?

A: The optimal seasons are spring (March to May) and autumn (September to November). Spring offers blooming rhododendrons and warmer temperatures, while autumn provides crystal-clear skies and excellent visibility. These periods also coincide with mountaineering seasons, so you may see climbers preparing for summit attempts.


Q: How difficult is the Everest Base Camp trek?

A: The trek is rated moderate to challenging. While no technical climbing skills are required, trekkers should be physically fit and prepared for 5-7 hours of daily walking at high altitude. The main challenge is altitude acclimatization rather than technical difficulty. Prior multi-day hiking experience is beneficial.


Q: Do I need a guide for the Everest Base Camp trek?

A: While not legally required, hiring a guide is highly recommended for safety, navigation, cultural insights, and supporting the local economy. Guides help with altitude sickness management and ensure proper acclimatization.


Q: What permits are required for the Everest Base Camp trek?

A: You need a Sagarmatha National Park entry permit and a TIMS (Trekkers' Information Management System) card. These can be obtained in Kathmandu or at the park entrance in Monjo.


Q: What is the altitude sickness risk on this trek?

A: Altitude sickness is a genuine concern as you'll be ascending above 5,000 meters. Proper acclimatization days, gradual ascent, staying hydrated, and recognizing symptoms early are crucial. The itinerary should include rest days in Namche Bazaar and Dingboche.

2. K2 (Mount Godwin-Austen) - 8,611 meters (28,251 feet)

The Savage Mountain

K2 stands as the world's second-highest peak and is widely regarded as the most challenging of all eight-thousanders to climb. Located in the Karakoram Range on the Pakistan-China border, K2 earned its fearsome reputation through its extreme technical difficulty, unpredictable weather, and high fatality rate. 


Unlike Everest, K2 was not climbed during winter until January 2021, testament to its formidable nature.

Name Origins:

The designation "K2" comes from the notation "Karakoram 2" used during the Great Trigonometrical Survey of India in 1856. Unlike most peaks, K2 retained its survey designation as local names vary across the region. 


It's also known as Mount Godwin-Austen after Henry Godwin-Austen, an early surveyor, though this name is rarely used.

The K2 Base Camp Trek

The journey to K2 Base Camp is considered one of the world's greatest wilderness treks, offering unparalleled mountain scenery in the remote Karakoram Range.


Duration: 18-22 days

Maximum Elevation: 5,150 meters at K2 Base Camp (5,585 meters at Gondogoro La Pass)

Difficulty: Challenging to Very Challenging

Best Season: June to September

Starting Point: Skardu, Gilgit-Baltistan, Pakistan

Route Overview:

Concordia to K2 Base Camp: Two options:

1. Day trip from Concordia (long, exhausting day)

2. Overnight at Broad Peak Base Camp (recommended), making K2 Base Camp more accessible the following day

Return Options:

1. Same Route Return: Retrace steps back to Askole

2. Gondogoro La Pass Circuit: The more adventurous option involves crossing the technical Gondogoro La (5,585m), requiring ice axe, crampons, and fixed rope descent. This route offers spectacular views of all four eight-thousanders from the pass summit before descending to the beautiful Hushe Valley.

Trek Characteristics:

Unlike the Everest Base Camp trek, K2 Base Camp is an expedition-style trek with no permanent villages beyond Askole. Trekkers must be self-sufficient with camping equipment, or join organized tours with full support. The terrain is rougher, more rugged, and significantly more remote. Mobile phone coverage is non-existent beyond the early stages.


Weather in the Karakoram is generally drier than the Himalayas, as the region doesn't experience monsoon rains. However, conditions can change rapidly, and trekkers should be prepared for extreme temperature variations from scorching daytime heat at lower elevations to freezing nights at higher camps.

K2 Base Camp FAQs

Q: How does the K2 Base Camp trek compare to Everest Base Camp?

A: K2 Base Camp is significantly more challenging and remote. The terrain is rougher, there are no teahouses or villages beyond Askole, and the trek requires expedition-style camping. However, you'll encounter far fewer trekkers and experience true wilderness. K2 Base Camp also offers views of four eight-thousanders, compared to Everest's single dominant peak.


Q: What permits are required for K2 Base Camp?

A: You need a Pakistan trekking visa (or visa prior to arrival), a Central Karakoram National Park (CKNP) permit, and a No Objection Certificate (NOC) from the Pakistan government. All trekkers must trek with a licensed Pakistani tour operator who can facilitate these permits.


Q: Is it possible to trek K2 Base Camp independently?

A: No. All trekkers must join an organized expedition with a licensed tour operator. This is due to the remote location, security considerations, and permit requirements. The area is a restricted zone near sensitive borders.


Q: What is Concordia, and why is it significant?

A: Concordia is a glacial confluence where the Baltoro and Godwin-Austen glaciers meet at approximately 4,690 meters. It's called the "Throne Room of the Mountain Gods" due to the spectacular 360-degree panorama of towering peaks, including four of the world's fourteen eight-thousanders.


Q: How physically demanding is this trek?

A: Very demanding. Trekkers should have previous high-altitude trekking experience, excellent physical fitness, and mental resilience. Daily trekking times range from 5-8 hours over rough, glaciated terrain. Proper acclimatization is crucial.


Q: What is the weather like on the K2 trek?

A: Daytime temperatures can reach 40°C (104°F) in lower sections during summer, while nights at high camps can drop to -10°C (14°F) or lower. Unlike Nepal, the Karakoram doesn't experience monsoons, making June to September the trekking season.

3. Kangchenjunga - 8,586 meters (28,169 feet)

The Five Treasures of the Great Snow

Kangchenjunga, the world's third-highest mountain, straddles the border between Nepal and the Indian state of Sikkim. 


The name translates to "Five Treasures of Snow," referring to the five peaks of the massif that represent the repositories of God: gold, silver, precious stones, grain, and holy books.

Cultural Significance:

Kangchenjunga holds profound spiritual importance for local communities. The Sikkimese people worship it as their guardian deity, while the Limbu people of eastern Nepal consider it the abode of their ancestral god. 


Until 1852, Kangchenjunga was believed to be the world's highest mountain until more accurate measurements revealed Everest's superiority.


The mountain remained sacred and inviolate for local populations, who have maintained strict religious protocols around its worship. The first successful ascent in 1955 by Joe Brown and George Band honored local beliefs by stopping just short of the actual summit, a tradition maintained by subsequent climbers.

Kangchenjunga Circuit Trek

The Kangchenjunga region offers one of Nepal's most remote and pristine trekking experiences, visiting both the north (Pangpema) and south (Oktang) base camps.

Duration: 18-24 days

Maximum Elevation: 5,143 meters at Pangpema (North Base Camp)

Difficulty: Very Challenging

Best Season: March to May and September to November

Special Requirements: Restricted area requiring special permits and minimum 2 trekkers with guide

Trek the Kanchenjunga Circuit Trek
The Untamed Heart of the Eastern Himalayas. Discover Nepal’s Wild East — Remote, Rugged, and Real.
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Route Overview:

Access: Fly from Kathmandu to Bhadrapur or Suketar, then drive to Taplejung or trek starting point.

North Base Camp Route:

Crossing to South Base Camp:

Mirgin La Pass (4,663m): Technical pass connecting north and south valleys, requiring experience with snow and ice.

South Base Camp Route:

Trek the Kanchenjunga South Base Camp Trek
Explore the remote beauty of Kanchenjunga South Base Camp Trek in eastern Nepal.
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Alternative Sikkim Approach:

The Goechala Trek from Yuksom, Sikkim, offers a 10-12 day journey to a spectacular viewpoint (4,940m) of Kangchenjunga's southwest face. This route passes through the Singalila Ridge, offering views extending to Everest, Lhotse, and Makalu on clear days.

Trek Characteristics:

The Kangchenjunga region sees far fewer trekkers than Everest or Annapurna, providing an authentic wilderness experience. 


The trail passes through pristine forests of rhododendron, magnolia, and oak, home to diverse wildlife including snow leopards, Himalayan black bears, red pandas, and musk deer.


Teahouses along the route are basic but adequate, with some sections recently adding more facilities. The region's remoteness means supplies are limited, and trekkers should be prepared for simple accommodations.

Kangchenjunga FAQs

Q: Why is Kangchenjunga less crowded than other major treks?

A: Several factors contribute: restricted area status requiring special permits, minimum group size requirements, remote location requiring longer travel time from Kathmandu, greater difficulty compared to Everest Base Camp, and limited teahouse infrastructure until recently.


Q: What permits are needed for Kangchenjunga trekking?

A: You need a Kangchenjunga Conservation Area Permit (KCAP), Restricted Area Permit (RAP), and TIMS card. These must be arranged through a registered trekking agency, and you must trek with a licensed guide. At least two trekkers are required (guide not counted).


Q: Can I trek only to the north or south base camp?

A: Yes. Many trekkers choose single base camp itineraries (13-16 days), visiting either Pangpema (north) or Oktang (south). The full circuit visiting both requires 20-24 days and crosses high passes between valleys.


Q: What wildlife might I encounter?

A: The Kangchenjunga Conservation Area hosts red pandas, snow leopards, Himalayan black bears, musk deer, blue sheep, and numerous bird species including the Himalayan monal (national bird of Nepal). While sightings of rare species are uncommon, the rich biodiversity is evident throughout.


Q: How does the difficulty compare to other Nepal treks?

A: Kangchenjunga is significantly more challenging than Everest Base Camp or Annapurna Circuit. The trek is longer, more remote, reaches higher elevations, and crosses technical passes on the circuit route. Previous high-altitude trekking experience is strongly recommended.


Q: What are the accommodation options?

A: Basic teahouses are now available along most of the route, though they're simpler than those in more developed regions. Rooms typically feature twin beds with basic bedding. Hot showers may not be available at higher elevations. Some groups still opt for camping to ensure comfort and flexibility.

4. Lhotse - 8,516 meters (27,940 feet)

Everest's Majestic Neighbor

Lhotse stands as the world's fourth-highest mountain, located just 3 kilometers south of Mount Everest and connected by the South Col. The name "Lhotse" means "South Peak" in Tibetan, acknowledging its position relative to Everest. 


Despite being over 300 meters shorter than its famous neighbor, Lhotse presents formidable climbing challenges and remains one of the most aesthetically striking peaks in the Himalayas.

The Lhotse Massif:

The mountain features three distinct summits:

- Lhotse Main (8,516m): The main summit

- Lhotse Middle/East (8,414m): Considered the most technically difficult eight-thousander

- Lhotse Shar (8,383m): The eastern summit

The dramatic Lhotse Face, a wall of ice and rock rising 1,125 meters, is one of the most iconic features visible from the Everest Base Camp trek.

Trekking to View Lhotse

There is no separate base camp trek for Lhotse, as climbers share the Everest Base Camp route. However, the classic Everest Base Camp trek provides outstanding views of Lhotse throughout the journey.

Best Viewpoints for Lhotse:

  1. Kala Patthar (5,545m): While famous for Everest views, this viewpoint also offers spectacular perspectives of Lhotse's imposing south face.

  2. Chukhung Ri (5,550m): Alternative viewpoint accessed from Dingboche, providing closer views of Lhotse, Lhotse Shar, Island Peak, and Ama Dablam.

  3. Gokyo Ri (5,357m): Part of the Gokyo Lakes trek, offering four eight-thousanders in one panorama: Everest, Lhotse, Makalu, and Cho Oyu.

  4. Island Peak Base Camp: For those combining trekking with peak climbing, the approach to Island Peak offers intimate views of the Lhotse south face and the hanging glaciers.

Extended Trek Options:

Trek the Everest Three Passes Trek
Conquer the Three Passes, Experience Everest’s Ultimate Trekking Adventure.
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Lhotse FAQs

Q: Can I trek specifically to Lhotse Base Camp?

A: Lhotse shares base camp with Everest, located at approximately 5,364 meters. The standard Everest Base Camp trek provides access to views of both mountains. Climbers heading to Lhotse follow the same route as Everest expeditions through the Khumbu Icefall and Western Cwm before diverging.


Q: What's the best time to view Lhotse?

A: The optimal viewing seasons align with the Everest Base Camp trekking seasons: spring (March to May) and autumn (September to November). Clear morning skies typically provide the best visibility.


Q: Why is Lhotse Middle considered so difficult to climb?

A: Lhotse Middle (East) is considered the most technically challenging of all eight-thousanders due to its extremely steep terrain, mixed rock and ice climbing, and exposure to avalanches. It wasn't successfully climbed until 2001, decades after most other eight-thousanders.


Q: How prominent is Lhotse from the Everest Base Camp trek?

A: Lhotse is highly visible throughout much of the trek, particularly from Tengboche, Dingboche, Lobuche, Gorak Shep, and Kala Patthar. Its distinctive pyramidal shape often dominates the southern skyline. From certain angles, particularly Kala Patthar, Lhotse can appear more imposing than Everest itself.


Q: Are there alternative viewpoints away from the main Everest trail?

A: Yes. The Chukhung valley, accessed from Dingboche, provides a quieter alternative with excellent Lhotse views. Chukhung Ri (5,550m) offers intimate perspectives of Lhotse's south face, Lhotse Shar, and Island Peak. This area sees far fewer trekkers than the main EBC route.

5. Makalu - 8,485 meters (27,838 feet)

The Great Black One

Makalu, the world's fifth-highest mountain, stands 22 kilometers southeast of Everest in the Mahalangur Himalaya range. 


The mountain's distinctive four-sided pyramid shape makes it one of the most recognizable peaks in the Himalayas. Its isolated location and technical climbing challenges have preserved Makalu's remote, pristine character.


The name "Makalu" possibly derives from the Sanskrit "Maha-Kala," meaning "Big Black," referring to the mountain's dark granite slopes. The mountain was first climbed in 1955 by a French expedition led by Jean Franco, with Lionel Terray and Jean Couzy reaching the summit on May 15.

Makalu Base Camp Trek

The Makalu Base Camp trek is one of Nepal's most spectacular and least-traveled trekking routes, traversing the Makalu Barun National Park and Conservation Area.

Duration: 16-22 days

Maximum Elevation: 4,870 meters at Makalu Base Camp (5,250m at some itineraries)

Difficulty: Very Challenging

Best Season: March to May and September to November

Special Features: Pristine wilderness, minimal tourist infrastructure, exceptional biodiversity

Route Overview:

Access: Fly from Kathmandu to Tumlingtar (30-50 minutes), then drive to Num or Chichila to begin trekking.

High Passes Options:

  1. Shipton La (4,216m): Named after Eric Shipton, who explored this region in the 1950s.

  2. West Col (4,200m): Alternative pass offering different valley perspectives.

  3. Barun La (4,450m): For those seeking extended routes into remote valleys.

Trek the Makalu Base Camp Trek
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Makalu Trek Characteristics:

The Makalu region represents Nepal trekking at its most pristine. The trail passes through multiple climate zones, from subtropical forests at lower elevations to alpine tundra and barren glacial landscapes near base camp. 


Spring trekkers will encounter magnificent displays of rhododendrons, magnolias, and dozens of wildflower species.


The Makalu Barun Valley is considered one of the world's richest pockets of biodiversity, home to 3,000+ species of flowering plants, 440 bird species, and rare mammals including snow leopards, red pandas, Himalayan tahr, and possibly the Asiatic black bear. The region's isolation has preserved ecosystems found nowhere else on Earth.


Accommodations are increasingly available in basic teahouses, though camping remains popular for flexibility and comfort. The infrastructure is minimal compared to Everest or Annapurna regions, adding to the wilderness experience.

Makalu Base Camp FAQs

Q: How remote is the Makalu Base Camp trek?

A: Very remote. The region sees only a few hundred trekkers annually compared to tens of thousands on the Everest route. Beyond Tashi Gaun, villages are sparse, and you'll spend days in true wilderness. This remoteness requires self-sufficiency and proper preparation.


Q: What permits are required?

A: You need a Makalu Barun National Park Entry Permit, Makalu Rural Municipality Permit, and TIMS card. While trekking with a guide isn't mandatory like Kangchenjunga, it's strongly recommended given the remote nature and limited infrastructure.


Q: Can I see Everest from the Makalu trek?

A: Yes. From Makalu Base Camp and higher viewpoints, you can see Everest, Lhotse, Baruntse, Chamlang, and numerous other peaks. The perspective offers a different angle on these giants compared to the standard Everest Base Camp viewpoint.


Q: What is the wildlife viewing potential?

A: Excellent, though sightings of rare species like snow leopards require luck. Red pandas inhabit the rhododendron forests, Himalayan tahr and blue sheep graze on high slopes, and the bird diversity is extraordinary. The Barun Valley is one of the best places in Nepal for wildlife enthusiasts.


Q: How does the difficulty compare to other treks?

A: Makalu is among Nepal's most challenging treks due to remote location, limited facilities, significant elevation gain, long daily trekking hours (6-8 hours), and rough, sometimes unmarked trails. The trek requires excellent physical fitness, previous high-altitude experience, and mental preparedness for isolation.


Q: What accommodation is available?

A: Basic teahouses now operate along most of the route, offering simple twin rooms and meals. However, facilities are more rustic than in developed trekking regions. Some trekkers still choose organized camping treks for greater comfort and flexibility, particularly during shoulder seasons.


Q: What is the best time for viewing rhododendrons?

A: Late March through April offers spectacular rhododendron blooms throughout the forested lower sections. The hillsides transform into vibrant displays of red, pink, and white flowers, creating some of Nepal's most photogenic trekking landscapes.


Comparative Overview: The Highest Five

Mountain Elevation Location Trek DurationTrek Difficulty  Main SeasonCrowds 
Everest 8,848.86m Nepal/Tibet |12-14 daysModerate-Challenging  Mar-May, Sep-NovVery High 
K2 8,611m Pakistan/China 18-22 daysVery ChallengingJun-SepLow
Kangchenjunga 8,586m Nepal/India 18-24 daysVery Challenging Mar-May, Sep-NovLow
Lhotse 8,516m  Nepal/Tibet 12-14 days*Moderate-Challenging Mar-May, Sep-NovVery High 
Makalu 8,485m Nepal/Tibet16-22 daysVery Challenging Mar-May, Sep-NovLow

* Shares route with Everest Base Camp

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