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Lumba Sumba Pass Trek – 21 Days

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About Lumba Sumba Pass Trek

  • 21 Days
  • Trip Grade: Strenuous
  • Nepal
  • Altitude: 5200m/17060ft
  • Spring/Autumn
  • Group Size : Min 2 Pax
  • Trek Style: Camping
  • Transport: Domestic Air / Land Transportation

Trip Highlights

  • Hike to the newly discover remote and beautiful trekking trail
  • Panoramic views of Kanchenjunga, Makalu and Kumbhakarna Peaks
  • Camping trek around some of the best off the beaten trekking route in world
  • Occasional sightings of the Snow Leopard and Red Panda

This trekking trail is discovered by Nepal Government and is announced by the Trekking Agency Association of Nepal (TAAN) in 2012. With the majestic view of Kanchenjunga, Makalu and Kumbhakarna peaks, Lumba Sumba Pass Trek offers the best wilderness experience in Nepal with the highest altitude of 5200 m. The trekkers have to pass through the Kanchanjunga Conservation Area (KCA) and Makalu Barun National Park where the trekkers can see different birds and wildlife including endangered animals. 

Lumba Sumba Pass Trek is rich in flora and fauna including endangered animals like snow leopard and red panda along the route. You can see number of high mountain lakes in Olangchung Gola. Tamor and Arun River system are the attraction for the travelers which are the tributaries of the Sapta Koshi River. The trekkers will pass through alpine grasslands, rocky outcrops, dense temperate and sub-tropical forests, low river valleys. 

One can also experience cultural heritage, Monasteries, Chhortens, Temples and prayer walls throughout the trial. The ethnic groups like Limbus, Sherpas, Rai, Gurung, Magars, Newars and Tamangs are found living in this region. 

For more adventure lovers Lumba Sumba Pass Trek can be done combining with Kanchenjunga Base Camp (5120m) following the high route of Great Himalayan Trail to connect with Makalu Base Camp (4,800m).

Lumba Sumba Pass Trek Itinerary

Day 1:Arrive in Kathmandu (1350m/4429ft)

You will be welcomed by a Great Nepal Representative at the airport and be transferred to your hotel. Your Great Nepal Representative will explain briefly about the travel itinerary. There will be a welcome dinner tonight where you will enjoy local cuisine and folk dance. Overnight stay in Hotel in Kathmandu.

Day 2:Full day Sightseeing Tour in Kathmandu and Trek Preparation

The day begins with the breakfast in your hotel; today you will be exploring the fascinating city of Kathmandu. Our first stop is the very sacred Hindu pilgrimage site, Pashupatinath Temple, it lies 6 Km from central Kathmandu. One of the holiest Hindu temples it is dedicated to Lord Shiva and is the site for Hindu cremations. Pashupatinath is situated on the banks of the sacred Bagmati Rive; the main temple is built in pagoda style, has a gilded roof and beautifully carved silver doors. Then you will visit the famous Stupa, Boudhanath. This stupa is an important pilgrimage site for Buddhists and also has a strong Tibetan influence and community. Then after we finally visit Swayambhunath temple, from there we return to your hotel. Overnight stay in Hotel in Kathmandu.

Day 3:Flight to Bhadrapur (40 mins) and drive to Ilam (95 Kms/4 Hrs)

After breakfast transfer to Domestic airport to board your onward flight to Bhadrapur which takes around 40 minutes. Bhadrapur is located in southeast Terai region of Nepal. From Bhadrapur 6 hours drive through mountains, rural fields and small towns take you to Illam, a small hilly area. Overnight stay at Hotel in Illam. 

Day 4:Drive to Taplejung (4 Hrs) and Trek to Mithlung (909m/2982ft) 4 hours

After breakfast drive along with beautiful landscape and river belt of Himalayan foothill to a small town of Taplejung (1820m/5971ft) where we meet our crew. After lunch start your trek with a downhill walk through small villages crossing the suspension bridge over Hangdewa Khola (stream). Follow the stream which leads us to Mitlung via Tamor River. Overnight at tented camp with full board meals.

Day 5:Trek to Chhirwa (1246m/4087ft) 5-6 hrs

We will trek along the banks of Tamor Rive, a pleasing walk till Furumba for 40 minutes from Mitlung. From Furumba, we trek uphill for half hour then descend through Ulnus and Schima wallichiana forest  mixed forest to Siwa Bazar (950m/3116ft) at Linkhim VDC. We will reach Siwa Bazar for lunch, a small market with facilities having drug store, groceries and a police station. After Lunch, we will trek along the Tamor River until Tawa Village. We will trek uphill from here until we reach the KCAP entrance gate (1300m/4265ft) at Thiwa Village. We will descend from here until Chiruwa- our destination for the day. Chiruwa (1246m/4087ft) – a small market with couple of lodges and good camping sites. Overnight at tented camp with full board meals.

Day 6:Trek to Lelep (1687m/5534ft) 5-6 hrs

After breakfast, we will trek along the Tamor River. After crossing Chiruwa through beautiful cardamom gardens, we will reach Tapethok (1340m/4396ft) – a small market with some tea shops. There is also a KCAP checkpoint at Tapethok. A gentle walk for about an hour until Pembu (1486m/4875ft). From here we trek uphill for about two and half hours to Lelep (1687m/5534ft) – the KCAP headquarters. There is a police station, some tea shops, groceries and hotels. Overnight at tented camp with full board meals.

Day 7:Trek to Ela Danda (2051m/4875ft) 5-6 hrs

We will trek along the bank of Tamor River through dense forest that offers good habitat for different wildlife species. Cross a suspension bridge and uphill climb through pine forest for about half an hour until we reach a Monastery. The trek descends after about half an hour and reach Gowatar (1800m/5905ft). There is a big stone and is believed that only the religious people can move them. Cross Tamur River and another short hike will take you to Ela Danda (2051m/4875ft)  Overnight at tented camp with full board meals.

Day 8:Trek to Selep Kharka (2525m/8284ft) 5-6 hrs

We will passes through Ulnus and Rhododendron forest for about an hour until we reach a suspension bridge. After crossing the suspension bridge, we will trek through dense bamboo groves. It is the habitat of red panda which is the reason behind the popularity of this place.You might catch a sight of red panda in the trail. After three and half hours of walk from Ela Danda, we will reach Maguwa (2423m/7949ft ).The trail leads through maple and Ulnus forest. After a walk of about one and half hour, we will reach Selep Kharka (2525m/8284ft). Overnight at tented camp with full board meals.

Day 9: Trek to Olangchung Gola (3208m/10524ft)

We will trek along the bank of Tamor River leading to Jongim (2641m/8664ft) which is a flat land surrounded by snow-capped hills, after a walk of about an hour. 40 minutes of walk through rhododendron forest, takes us to a suspension bridge. About an hour, we will reach Ramite (2685m/8809ft). Here, we will see mixed forest of Deodar and Rhododendron. We will catch the first glimpse of OlangchungGola after a walk of around 45 minutes from the waterfall. We will reach the camping site at Olangchung Gola (3208m)-a beautiful Sherpa village having around 45 houses, 465 years old monastery with golden manuscript and KCAP office. It is also facilitated with sub-health post, a primary school and a border police station at Olangchung Gola. Overnight at tented camp with full board meals.

Day 10:Trek to Upper Langmale (3893m/12772ft)

We will trek through complete wilderness where you will see the piles of stones along the way act as signs posts, showing us our direction. We will pass through pine and rhododendron forests. We will reach a place called Jadak (3636m/11929ft) after a walk of two and an half hour. Three hours of walk on snowy track, will take us to our camping site at Upper Langmale (3893m/12772ft). Overnight at tented camp with full board meals.

Day 11:Trek to Pass Camp (4747m/15574ft) 4-5 hrs

We will trek along the Tamor River and on the other side of the river lying dense Rhododendron forest. This day can be interesting as snow leopard have been sighted numerous times from this trek. Three hours of trek, we will reach Tangchetar (4203m/13789ft) from where our destination can be reached. Overnight at tented camp with full board meals.

Day 12:Trek to Chauri Kharka (4595m/15075ft) via Lumba Sumba La (5200m/17060ft) 7 hrs

We will trek through the Lumba Sumba Peak (5200m/17060ft). As there are no good camping sites around so, packed lunch is the best solution for it. After a walk of about four and half hours, we will climb the Lumba Sumba Peak and descend down to Chauri Kharka (4595m/15075ft). Overnight at tented camp with full board meals.

Day 13:Trek to Thudam (3500m/11482ft) 6 hrs

We will trek downhill from Chauri Kharka where we will see the civilization after tiring walk for three days. After a walk of about three and half hours, we will cross the two roads one to Lyasha in Tibet and the other toward Thudam. The trek of about three hours takes us to Thudam (3500m/11482ft) – a small village with around 30 houses of Sherpa people. Overnight at tented camp with full board meals.

Day 14:Trek to Kharka (2877m/9438ft) 6-7 hrs

We will trek along the bank of Chujung Khola (River) which offers panoramic view of Makalu range. On the way you will see lots of small bushes and bamboo groves which is known to the best habitat for Red panda.You will get to see this endangered species, if your luck favors you. We will carry the packed lunch as it is difficult to find the tea houses along the trails. We will reach Kharka (2877m/9438ft) after about six hours of walk from Thudam. Overnight at tented camp with full board meals.

Day 15:Trek to Chyamtang (2229m/7312ft) 6-7 hrs

We will trek through dense Rhododendron forest. There are no villages on the way along the numerous side trails. We will reach a place called Chauri Kharka, from where we will clearly see Chyamtang (2229m/7312ft), Arun River, Ridha Village and the road which lead to Kimathanka. We will trek downhill for about three hours until we reach Arun River. Ascend for about an hour until Chyamthang, after crossing the suspension bridge over the Arun River. Chyamthang (2229m/7312ft) having small houses where Sherpas are the dominant population in the villages. Overnight at tented camp with full board meals.

Day 16:Trek to Hatiya (1595m/5232ft) 6 hrs

The trail leads us through Rhododendron forest. It is gentle walk which makes you feel refreshed as you hear the chirping of birds while walking. This trail is one of the popular places for bird watching as we enter Arun Valley which is home to several bird species. About two and half hours of walk from Chyamthang take us to Glimber Village (1585m/5200ft). It offers spectacular view of snowcapped peaks in the Makalu range. The trek is easy and after of about three hours we will reach Hatiya (1595m/5232ft) – a small village of Bhote people which is the entry point to the Makalu National Park. Overnight at tented camp with full board meals.

Day 17:Trek to Gola (1128m/3700ft) 5-6 hrs

We will trek along the banks of Arun River. After a walk of about two and half hours, we will reach the confluence of Arun and Barun rivers, near the river confluence the trek progress towards Gola- a very small village with 12 houses. Sherpa, Rai and Tamang people reside here. Overnight at tented camp with full board meals.

Day 18:Trek to Hedangna Gadi (1800m/5905ft) 6-7 hrs

We will trek through paddy fields. After a walk of about two and half hours, we will reach Pathibhara. Pathibhara (1524m/5000ft), a small Gurung village having tea shops, groceries and some hotels. The trail passes through agricultural land where we will find plenty of water sources and small settlements along the way. We will reach Gadhi (1800m/5905ft) after a walk of around three hours from Pathibhara. Gadhi is a place of great historical significance where Nepali Army fought bravely with invading Tibetan Army at this place and chased them away. Gadhi is a small village market having health post, a school and a police station. Overnight at tented camp with full board meals.

Day 19:Short trek to Num and drive to Khandbari (1020m/3346ft)

The last day of our trek where we will walk for about two and half hours from Gadi. The trail takes us to Num. It is about an hour downhill till the Arun River. Uphill climb of about one and half hour takes us to the Num village (1572m) after crossing the river. Num is linked with road, we will take a drive to Khandbari (1020m/3346ft) – the district headquarters of Sankhuwasabha district. It takes around 4-5 hrs on dirt road taking us to Khandbari. Overnight at Guest House Lodge with full board meals.

Day 20:Flight to Kathmandu from the domestic airport in Tumlingtar

Later in the evening, a farewell dinner will be served in a Traditional Nepali Restaurant where you will be able to enjoy authentic cuisine with a brief cultural program as a celebration of your completed trek. Overnight stay at Hotel in Kathmandu.

Day 21:Departure from TIA

Sadly your most memorable journey ends today. A Great Nepal representative will escort you to the airport 3 hours before your scheduled flight. On your way home you have plenty of time to think about your recent adventure and to plan your next wonderful adventure in Nepal.


  • All land transportation including Airport picks up drop service as per itinerary
  • Kathmandu Hotel accommodation in double room basis with breakfast
  • Food and accommodation and 3 meals (Breakfast, lunch, Dinner) during the trek
  • All necessary camping equipment and charges
  • Light from Kathmandu-Biratnagar & Tumlingtar-Kathmandu with Domestic Airport Tax
  • English-speaking trek leader (trekking guide) and porters to carry luggage (2 trekkers: 1 porter) including their salary, insurance, equipment, flight, food and lodging
  • Trip permit and all necessary paperwork
  • Monument Entrance Fees
  • Farewell cultural dinner with Authentic Nepali food


  • Lunch and dinner whilst in Kathmandu.
  • Snacks, soft drinks, alcoholic drinks, water and personal items.
  • Your travel insurance (compulsory). This must include helicopter rescue.
  • International airfare and airport departure tax.
  • Nepal entry visa cost. Most visitors can can obtain a visa upon your arrival at Tribhuwan International Airport in Kathmandu. A multiple-entry tourist visa is good for 30 days and costs US$ 40 or equivalent in foreign currency. Similarly, multiple-entry tourist visas for 90 days can be obtained for US$ 100. Please bring 2 passport-size photos.
  • Any extra expenses arising out of various/unforeseen situations like(natural calamities, landslides, political disturbances)
  • Personal trekking gear.
  • Tips for trekking staff and driver.  While tipping is not mandatory it is highly appreciated.
  • Any other items not mentioned in the included section.


What is Acclimatization? Is it important to acclimitized?

To enable all trekking & expedition members to acclimatize well and hence maximize their chances of success, our trekking & expedition programs are prepared with sufficient time for acclimatization. Adaptation to the altitude takes time and there can be no short-cuts, even if supplementary oxygen is used in the final stages. The atmospheric pressure at the base camp is half of that at the sea level. A thorough program of acclimatization is built into the itinerary which consists of regulated height ascents, followed by descents and rests before the final ascent to the summit. Yes it is very important for all trekkers and climbers because this will prevent the climbers to get rid from altitude sickness.

What kind of personal first aid should i carry while trekking or Expedition in Nepal?

Although our guides from Great Nepal Treks carry first aid medical kit, it is better to carry a supply of first aid items for your own personal use according to your health conditions. Here are the list of some general as well as some special medications you may require:
– Antiseptic cream (Betadine)
– Sunblock SPF 30+
– Throat lozenges
– Painkillers and anti-inflammatory such as Aspirin, Paracetamol, Ibuprofen etc.
– Band-aids, bandage, compression bandage and ‘Second Skin’ for blisters
– Re-hydration salts. (Trioral, Electrobin, Oral Rehydrating Salt)
– Dextrose glucose tablets
– Water treatment tablets
– Your prescription medications
– Antibiotics for longer climbing and expedition style trips

Does high altitude effect and benefits?

You will be affected by high altitude problems if it is your fist trip at a high altitude. The altitude has some important beneficial effects on the human body and your trips have been designed to enable these. Please familiarize yourself with the information on AMS (Acute Mountain Sickness) and understand how to avoid it and read on benefits of high altitude and take advantage of these to improve your body’s metabolism.

What is Acute Mountain Sickness(AMS)

Altitude sickness is the reaction of the body adjusting to decreasing amounts of oxygen. The high altitude slowly decreases the flow of oxygen means the higher you climb, the flow of oxygen is very thin resulting the malfunction of body. Altitude sickness most commonly occurs from above 2,800 meters (9,200ft) but this is different for everyone – there is simply no way of knowing your own susceptibility prior to being at altitude thus it is vital for you to monitor your own health. AMS occurs when the body is unable to adopt at the higher altitude having less amount of oxygen. At an altitude of 5490m (18000 ft.), the oxygen availability becomes just the half of the availability at sea level. While only a third of oxygen is available at the summit of Mt. Everest. Symptoms may be mild and subside/go away after a day’s rest, or if it is ignored it could lead to death.

What are the symptoms of AMS?

Symptoms can appear within 1-2 hours although most often appear 6-10 hours after ascent and generally subside in 1-2 days as the body adjusts to altitude. They may reappear as you continue to go higher. Symptoms of AMS usually occur gradually and can be one or a combination of the following:
• Headache: Due to the less amount of oxygen in air, the blood influences the blood vessels to spread wide in order to supply more oxygen to the brain and which cause them to show the early symptom of AMS.
• Dopiness: The trekkers or climbers feel very sleepy but could not.
• Shortness of breath: The breathing pattern changes as the breathing becomes faster and deeper than normal in order to get enough oxygen and rapid pulse
• Loss of appetite and nausea: Despite of physical exercise, the trekkers don’t have an appetite to eat.

What are the Life threatening forms of AMS?

High Altitude Pulmonary Edema (HAPE)
If one accumulates of fluid in the lungs and mild fever then, there is a chance of High Altitude Pulmonary Edema (HAPE). The filling of fluid in the lungs is Pulmonary Edema. The fluid blocks the passage of fresh oxygen to get into the lungs which causes the shortage of oxygen. Though the exact reason for the HAPE has not been identified, scientists think that pressure of blood vessel around the lungs is directly proportional to the altitude. As a result the smaller blood vessels leak allowing the fluid to escape to the lungs. The treatment for the HAPE victims is to give the oxygen at the rate of 4 liters a minute, using Portable Altitude Chamber (PAC). In case of unavailability of PAC bag or oxygen, one is taken down to the low altitude which is the only way of life-saving. HAPE can also lead to unconsciousness which may also results to death in a short period of time.

High Altitude Cerebral Edema (HACE)
HACE is the accumulation of fluid in the brain due of the swollen blood vessels to the brain. HACE is also seen within a couple of hours and can send the patient to coma and take his/her life in just few hours likewise to HAPE. The excessive flow of blood to the brain due to the low-level oxygen causes vasodilation which eventually leads to leakage of blood vessels to the brain. A 4 to 8mg of dexamethasone is given as a first dose to those who suffer from such sickness and then 4mg Diamox is given an every six hours gap. Similarly, 2-4 liters/minute oxygen is given and one is taken to down if it is necessary.

What are the Symptoms of HAPE?

– A dry cough, developing to a wet one with blood-tinged discharge or saliva
– Tightness in the chest & blueness/darkness of face, lips & tongue
– Low fever up to 38°C/100°F
– Severe fatigue, progressing to coma

What are the Symptoms of HACE?

– Severe headache symptoms not relieved by painkillers or lying down
– Confusion, disorientation & drowsiness
– Nausea/vomiting
– Loss of balance or coordination
– Blurred or double vision/retinal hemorrhage

How to Prevent Altitude Sickness?

Certain medical conditions (such as respiratory disease) or medications (such as sleeping pills) can increase the risk of altitude sickness – it is important that you inform your guide of any medical conditions or medications before ascending to altitude. You can help your body to acclimatize and avoid altitude sickness by:
– Avoiding alcohol, tobacco and substances that can interfere with good delivery of oxygen to the body or cause dehydration
– Eating small, frequent meals high in carbohydrates
– Drinking plenty of water – the test of sufficient amount of water intake is ability to urinate colorless urine
– Taking it easy or have a rest. Walk at a slower pace than you would at sea level and avoid over-exertion
– Climb the mountain gradually and stop for a day or two of rest for every 600m/2000ft above 2,400m/8000ft
– Climb high but Sleep at a lower altitude if possible
– Learn how to recognize early symptoms of mountain sickness
Since our Guides from Great Nepal Treks are very professional and well trained about altitude sickness, they will guide you during your trekking and expedition activities in Nepal.

What are the basic treatment of Altitude sickness?

Most travelers are able to successfully acclimatize by following the previously mentioned guidelines. However, there are instances where medical treatment is required. Ultimately, the best treatment for acute mountain sickness (AMS) is to descend to a lower altitude and rest. Early diagnosis is important. Acute mountain sickness is easier to treat in the early stages. The guide will monitor you all the time for symptoms and will pace you appropriately to minimize your exposure to AMS.Cooperating with the guide and reporting if any of the above-described symptoms are seen allows your guide to undertaking appropriate and timely action to minimize your exposure to AMS. Sufficient time for acclimatization (After 3000 meters) is also another method to minimize AMS. Following precautions can be done in order to get rid of AMS:
Don’t ascent up rapidly.
• Never use alcohol, sleeping pills and smoking.
• Drink more fluid 3-4 liters a day, clean boiled water / tea / coffee / soup / juice etc.
• Climb high and sleep low.
• Don’t go trekking alone, take guide/porter.
• Follow the advice from your guide, hotel, local people, guidebook.
• Descent if mild symptoms rapidly getting worse.
• Never leave or descent sick person along.
• Avoid getting cold.
• Take an easy and comfortable trekking route even if it is longer.
• Sleep more than normal.
Your Guide will carry some medications in First Aid Kit and may suggest for medication such as Ibuprofen, Paracetamol, combination of them or specific AMS medication. Standard and effective medication for prevention of AMS is Acetazolamide (Diamox) and it may be given to help improve breathing and reduce mild symptoms. This drug can cause increased urination. Ensure you drink plenty of fluids and avoid alcohol when taking this drug.With severe cases of AMS, our guide will contact our office in Kathmandu and arrange your evacuation by helicopter. Before we accept you on the trek we will require that you purchase health and travel insurance including helicopter rescue and hospitalization.

How GNTE handle you during the case of emergency?

You never know when the unexpected situation comes and put you in hearse condition whether you are professional or beginners. Our professional guides do their best to make you well with first aid support. If the situation goes worse, you will be evacuated by Helicopter. You are entirely liable for all the expenses incurred in evacuation. So, before coming to Nepal, please make your travel insurance. Ask your guide to arrange a runner to the nearest communication point and inform office about requirement of a helicopter. For evacuation, we require the name of the sick person and the exact location from where helicopter can airlift you. You should not leave the place after calling Helicopter for evacuation though you are feeling better than before.

How to get safe drinking water during trekking and Expedition in Nepal?

On the trek, there is a facility of purchasing safe drinking water in teahouses.It is better if you carry the water purifying pills on your own. On camping trek, the water will be treated with Potassium permanganate or Iodine. On the trail, water from the streams is safe to drink, but better not to use it directly for drinking.

Are we safe with Great Nepal Treks during our trekking or expedition journey?

Security and a safe journey is our core objective of trekking. Our guide holds licenses issued by the Nepal Government and our staffs are local, honest, kind and genuine. But we also insist you to take care of your own personal belongings. If you are on ‘camping trek’ please take your main bag inside the tent once you reach campsite and put all bags and belongings in the middle of the tent when you feel sleepy. Your guide assigns a Sherpa on turn wise basis to guard the campsite throughout the night. If you are on ‘Tea house arrangement, never leave your baggage unattended and keep your lodge room locked when you go out. Feel safe since you are in the hands of ethical trekking company in Nepal.