Indonesia – Mt Rinjani

5 May 17

Indonesia – Mt Rinjani

Rinjani Crater Lake Pic

Mount Rinjani (3726m) is the second highest volcano in Indonesia, second only to Mount Kerinci on Sumatra. It is an active volcano that is part of the “Ring of Fire” and dominates the landscape of the relatively small island of Lombok.

On the top of Mt Rinjani is a 6-by-8.5km caldera. Within this huge caldera, surrounded by a complex of jagged peaks and smoking fissures, lies a stunning emerald-green crater lake. Believed by locals to be the home of the goddess Anjani, this lake is approximately 2000m above sea level and about 200m deep.  The lake is known as Segara Anak or Anak Laut (Child of the Sea), due to the colour of its water that resembles the colour of the sea. The caldera also contains hot springs.

For the people of Lombok, Sasak and Balinese alike, Mt Rinjani is revered as a sacred place and abode of deities. The crater lake is a pilgrimage destination for tens of thousands each year. Pilgrims place offerings in the water and bathe away ailments in the hot springs. For trekkers, Mt Rinjani is considered one of the best volcano treks in South East Asia. The strenuous climb to the summit culminates in a breathtaking view that takes in the tropical idylls of Bali and Sumbawa as well as the winding coast and green valleys of Lombok.

About The Climb

The trek to Mt Rinjani's peak can begin from Sembalun or Senaru. The less strenuous route is from Sembalun to Senaru. All our trek itineraries start from Sembalun.

The route from Sembalun begins gradually from the village of Sembalun Lawang by crossing a huge grassland towards the slopes of Mt Rinjani.  Higher up, the trail cuts through ferns and stands of pandan before reaching pine trees that are heavily-draped with moss.  After clearing some steep slopes, we will reach the crater rim (Rim II/2639m) where we will spend the night before the summit day. At the crater rim, the dazzling sight of the crater lake, Segara Anak is in full view on a clear day.

From the base camp it is a 4-6hrs strenuous trek up to the summit before sunrise.  The last stretch is a wind-swept ridge of deep, loose ash, and climbing it is more like crawling up a vertical sand-dune!  It takes good fitness to see sunrise from the summit, or witness the first light along the summit trail – it is equally awesome.

The summit view is unforgettable, especially looking down in the caldera with clouds drifting across the surface of Segara Anak.  On the edge of Segara Anak, lies a volcanic cone – Mount Barujari (2375m), still occasionally emits smoke.  Along the summit trail, to the northwest direction, you can also spot a tiny cone among the clouds – the highest mountain in Bali – Mount Agung (3142m).

After the summit, we have the following itinerary options:

6 days itinerary (4D/3N trek): Descend to base camp to stay another night. On day 3 of the trek, after a good recovery and night rest, we trek down to the crater lake for lunch. If time permit, visit the hot springs nearby for a rewarding dip to ease the body, before we trek up to the other side of the crater rim (Plawangan I/2641m) to stay overnight. On day 4 and the last day of the trek, we descend out  through  a shady forest of tall teak and mahogany trees to Senaru.

5 days itinerary (3D/2N trek): After lunch, descend to base camp followed by a steep climb down to the crater lake to stay overnight. If time permit, visit the hot springs nearby for a rewarding dip to ease the body after an arduous summit climb. On day 3 and the last day of the trek, we trek up to the other side of the crater rim (Plawangan I/2641m) before descending out through a shady forest of tall teak and mahogany trees to Senaru.

4 days itinerary (2D/1N trek): Descend to base camp to have a quick lunch. After lunch, we continue to descend through the same route out to Sembalun.

Trekking Seasons

The monsoon season in Lombok is from December to early March. During this period Mt Rinjani will be closed for trekking by the National Park and is usually opened from mid March onwards. While Mt Rinjani is opened to trekkers from mid March, the rainy season can last through March to April and the rain can start to pour from November. Hence, the best period to trek Mt Rinjani is from May to October.

Fringe season : November - December & April

Best season : May - October

Experience Required

Good to have above 1000m trekking experiences. (eg: Belumut, Mt Ophir and Gunung Nuang etc). The up and down rim to rim trek and the famous scree slope on the summit trail require good fitness and endurance. You will be trekking in undulating mountain terrain with a personal backpack load of 5-6kg for 6-8 hours each day for 4 days.

Equipment and Gear

You can wear a quick dry t-shirt/trekking shirt and trekking shorts/ pants for the rim to rim trek. In the evening and for the summit trek, a thermal set, an insulating layer (such as a fleece jacket) and an outer shell jacket are needed. Bring rain gear and waterproof your backpack. A sleeping bag is needed and will be provided.

A recommended packing list will be provided to all our participants. Please refer to our Resource Centre page to learn about the layering system and choose the right gear/equipment for your trek.

Optional Extension - 1 Day Boat Trip to Save the Sharks

Save The Sharks with Dorsal Effect

Rinjani Dorsal Effect

About 400 sharks are killed each day at Tanjung Luar, Lombok, Indonesia. Their fins are exported to countries such as Singapore, Taiwan and Hong Kong, where shark-fin soup is consumed. This is not sustainable given the slow reproduction rate of sharks. Furthermore, the biggest earners from this trade are the fin traders. In comparison, the boat owners and fishermen are paid trifling sums but toil the hardest, seeing little of the profits made within the lucrative shark-finning industry.

The Dorsal Effect began with a vision to put an end to shark-finning and fishing in Lombok, Indonesia. To save the sharks, they provide alternative livelihoods to exploited shark fishermen by employing them to run boat tours. Through snorkeling, diving and beach-hopping tours using the once-shark boats, these shark fishermen can earn more equitable income through a steady stream of tourists wanting to go on their boat tours. These boat tours also help the shark fishermen see the long-term and sustainable tourist value of sharks -alive than dead.

Package Details:

Duration         :    1 day

Package fee   :    $180 per person (min 4 pax)

Package Fee Includes:

  1. 1 night stay in Senggigi (twin/triple sharing)
  2. Pick up from hotel in Senggigi and drop off at end of day
  3. One full day snorkelling and beach hopping boat trip
  4. Packed nasi campur lunch (vegetarian options available upon request)
  5. Unlimited snacks and chilled drinks on boat
  6. Snorkel mask and fins
  7. Life vest (upon request)

Group size: 10-20 people. Our Mt Rinjani scheduled climbs with a trek leader are part of our Volcanic Mountain Challenge Initiative

6D/5N Package Fee (without a trek leader):

2-3 people: $650 per person

4 - 5 people: $580 per person

6-9 people: $550 per person

10 people and above: $530 per person

Rinjani 5 Days Trek (with summit climb & crater lake camp)$590 per person$530 per person$490 per person$480 per person
Rinjani 4 Days Trek (with summit climb only)$520 per person$470 per person$450 per person$420 per person

You can form a private group for any of the Mt Rinjani itineraries. For enquiry, send an email to us at

This 6D itinerary is most recommended by us. It is not overly demanding for trekkers who are not used to long hours of trekking, especially on the summit day. After the summit, you will stay 1 more night at (Rim II) to allow for a better recovery for the next 2 days trek. The summit success rate is higher because of a better turn around time for the summit attempt at 11am.

Day6D/5N Trip DescriptionMealsAltitude at Rest Point
Day 1Arrive at Lombok. Transfer to Sembalun. -/-/D1100m
Day 2Trek to Rim II Base Camp. B/L/D2600m
Day 3Summit day. Descend to Rim II. B/L/D2600m
Day 4Trek from Rim II to crater lake and visit hot springs. Trek to Rim I.B/L/D2600m
Day 5Trek to Senaru. Transfer to Senggigi.B/L/-50m
Day 6Depart Lombok.B/-/-

This 5D itinerary is a more compact itinerary from the 6D's. It is suitable for those with a high level of fitness and experienced trekkers. Trekkers who opt for this itinerary not only have a longer summit day but also a more stringent turn around time for the summit attempt at 9am. After summit, you will descend to the lake after a quick lunch. Trekkers must be prepared to walk for more than 12 hours on summit day.

Day5D/4N Trip DescriptionMealsAltitude at Rest Point
Day 1Arrive at Lombok. Transfer to Sembalun. -/-/D1100m
Day 2Trek to Rim II Base Camp. B/L/D2600m
Day 3Summit day. Descend to to crater lake. B/L/D2000m
Day 4Trek to Senaru. Transfer to Senggigi. B/L/-50m
Day 5Depart Lombok. B/-/-

The 4D itinerary is a "quick fixed" trek. Trekkers will skip visiting the lake "Segara Anak". The summit day is also a long day with a stringent turn around time for the summit attempt at 8am. After summit, you will descend to Sembalun after a quick lunch.  Trekkers must be prepared to walk for more than 12 hours on summit day.

Day4D/3N Trip DescriptionMealsAltitude at Rest Point
Day 1Arrive at Lombok. Transfer to Sembalun. -/-/D1100m
Day 2Trek to Rim II Base Camp. B/L/D2600m
Day 3Summit day. Descend to Sembalun. Transfer to Senggigi. B/L/-50m
Day 4Depart LombokB/-/-


  • Return airport transfer in Lombok
  • All land transfer as indicated in itinerary
  • Meals as indicated in itinerary
  • Bottled drinking water, coffee & tea on trek
  • Twin/Triple sharing accommodation in Sembalun and Senggigi
  • Camping service: sleeping tent(twin sharing), toilet tent, sleeping bag and sleeping mat
  • Trek support: climbing guides (1 guide to 8 trekkers) and kitchen crew, porters for communal and personal items
  • Summit support: climbing guides with 2-3 porters
  • Permits and fees: Conservation and National Park fees
  • Rinjani National Park climbing certificates
  • Emergency support: Rescue fee (for rescue by emergency rescue crew on foot and land transfer to the nearest clinic or hospital) , basic first aid kit and Oxican  (oxygen in can)


  • International air tickets, airline taxes and fuel surcharge
  • Visa fee (if any)
  • Single supplement
  • Meals no indicated in itinerary
  • All tipping
  • Personal travel insurance (mandatory to cover travel agent insolvency and trekking up to 4000m)
  • Personal expenses like shopping, laundry etc
  • Personal travel and trekking gear – warm clothing, shoes, backpacks etc
  • Compensation for damaged or lost of personal items (eg: climbing/trekking gear and equipment, cameras and any valuable items etc)
  • Emergency evacuation and medical expenses
  • Any expenses including accommodation, meals & transfer outside the stipulated trek/climb itinerary – i.e. any person leaving the group for personal travel, illness/injury or any form of extension of stay

Support from Ace Adventure Expeditions

We provide pre-trip support to prepare you for the climb:
1. Trip briefing and information kit
2. Gear list and gear discount from selected Singapore outdoor outfitters
3. Training guideline kit
4. Rope skill workshop (For climbs that require rope up and/or fixed rope skill)

We carefully select and establish strong working relationship with our local trek operator to ensure a high standard of service and safe participation by everyone.

Our local climbing guides have extensive experience in guiding treks in Mt Rinjani, possess  intimate knowledge of the local surroundings, conditions and culture. They are trained in emergency rescue, carry a 1st aid kit and Oxican (oxygen in can).

Our local partner include a rescue management service as part of the trek service. Should an accident happen, the rescue from the mountain on foot by an emergency crew of porters will be activated and transport to the nearest clinic and hospital arranged at no extra cost.

Our local partner also inculcate environmental consciousness among the mountain guides and porters to bring the trash out of the mountain after each trek. They also initiate and organize clean up of Mt Rinjani, bringing the mountain guides and porters to clear out trash left behind by others, every year.

Grading: 2B+

Training: Regardless of your level of fitness and physical conditions, it is advisable to train prior to embarking on a trekking or mountain climbing trip.

Pure cardiovascular fitness is NOT enough.

Focus your training effort in the following areas, assuming that you are in good health and injury-free:

  1. Climbing conditioning – stairs and load training.
  2. Cardio training - Jogging/running and interval training like CrossFit or HIIT.
  3. Strength training for the lower body, shoulder, back and core
  4.  Flexibility training - eg: Yoga and stretching exercises

A good five to six months of training would be a good preparation for this trek.

A recommended training guide specific to the trek or climb will be given to you upon signing up.

Refer to our Grading chart for an overview on the technical difficulty and fitness required for this trek.

Refer to our Training Guide for tips on trekking and mountain climbing training.