Mount Rinjani deep dive
Every Mount Rinjani trekker in 2026 must hold an eRinjani permit booked through the National Park's official online portal at least 48 hours before arrival. The permit costs IDR 150,000 per foreign trekker per trekking day on weekdays (IDR 250,000 on weekends and holidays), plus mandatory guide and porter fees. Most trekkers book through licensed operators who handle permits, certifications, and logistics for around 2.5 to 4.5 million IDR for a 3-day trek.
# The Mount Rinjani Permit System in 2026: A Complete Guide to eRinjani, Costs, Certification, and Booking
The Mount Rinjani permit system has evolved dramatically since the 2018 Lombok earthquakes prompted Gunung Rinjani National Park (TNGR) to professionalize what was previously a loose, village-driven booking culture. By 2026, the system runs through the eRinjani online portal, mandates registered guides and porters, sets clear capacity limits per trail per day, and is enforced by checkpoint rangers at all four trailheads. This guide explains how it actually works, what it costs, what licensed operators handle for you, and the timeline you should follow if you want to book a trek.
It is written from the perspective of a senior trek operator who has navigated the system through both its 2019 launch and the 2025 overhaul, and who has seen exactly where trekkers get tripped up.
Mount Rinjani sits inside Taman Nasional Gunung Rinjani (Gunung Rinjani National Park, TNGR), a 41,000-hectare protected area established in 1997. The park is governed by Indonesian Forestry Ministry regulations and managed by a director appointed by the central government. All trekking activity in the park is regulated under Ministry Regulation P.20/2018 and subsequent updates, which require:
1. A booked permit (now via eRinjani) before park entry
2. A registered park guide accompanying every trekking party
3. A registered porter (separate from the guide)
4. Adherence to designated trail corridors only
5. Compliance with daily capacity limits per trail
These rules apply to all trekkers, including Indonesian nationals, with different fee structures for Indonesians vs foreigners.
eRinjani is the National Park's official online booking portal, accessible at erinjani.menlhk.go.id. The system requires:
The booking generates a QR-coded permit voucher that the checkpoint ranger scans against the live database. Without this voucher, you do not enter the park.
The portal was overhauled for the 2025 trekking season with improved English-language support and a redesigned interface. As of April 2026 it is generally functional, though periodic outages still happen during peak booking windows. Operators recommend booking at least 48 to 72 hours before your trek date, longer in peak season.
TNGR sets a daily capacity for each trailhead to prevent overuse damage and overcrowding at the limited camp areas. The 2026 limits are:
Once a daily limit is reached, no further bookings for that date are accepted on that trail. In peak July and August this means the Sembalun trailhead can fill 7 to 14 days in advance. The Senaru trailhead is usually less constrained, and the Aik Berik and Timbanuh routes are rarely full.
If the Sembalun trailhead is full on your preferred date, you have three options: shift dates, switch trailheads (most operators can adapt the itinerary in either direction), or — for the Senaru-Sembalun traverse — book the reverse direction starting from Senaru.
There are several distinct fees that combine to create your total trek cost:
Park entry fee (foreigner):
Park entry fee (Indonesian):
Conservation fee (foreigner): IDR 100,000 per trip (regardless of duration)
Camera permit:
Mandatory guide fee: IDR 500,000 to 800,000 per day depending on guide certification level (junior, senior, or master). Most operators use senior guides at IDR 600,000 to 700,000 per day.
Mandatory porter fee: IDR 350,000 to 500,000 per day per porter. Standard ratio is 1 porter per 2 trekkers, so a group of 4 typically takes 2 porters.
Operator service fee: IDR 800,000 to 1,500,000 per trip (covers booking management, transport coordination, food provisioning, equipment).
For a single foreign trekker on a 3-day Senaru-Sembalun traverse with shared guide and porter (joining a group of 4), the typical total cost in 2026 is:
Total per person for a shared group trek: approximately IDR 2,225,000 to 2,500,000 (USD 145 to 165).
A private 1-person trek with dedicated guide and porter: approximately IDR 4,000,000 to 5,500,000 (USD 260 to 360).
TNGR has established a tiered guide certification system to ensure quality and safety. Three levels exist:
Junior guide (Pemandu Pemula). Minimum 1 year mountain experience plus completed TNGR basic training. Can guide on standard routes with another senior guide nearby. Lower fee. Suitable for fit, experienced trekkers who do not need extensive guide support.
Senior guide (Pemandu Madya). Minimum 3 years experience plus completed TNGR intermediate training including first aid, weather assessment, and emergency response. Most common certification level for working Rinjani guides. Default for almost all operator bookings.
Master guide (Pemandu Senior). Minimum 7 years experience plus completed TNGR advanced training including search and rescue, advanced first aid, and English language proficiency. Often assigned to private VIP bookings or international expedition groups. Higher fee.
When booking, you can request a specific certification level. For an experienced trekker, a senior guide is more than sufficient. For first-time mountain trekkers or those with medical considerations, requesting a master guide is worth the cost premium.
All certified guides carry a TNGR-issued ID card with their certification number. You should see this card at first introduction. If a guide cannot produce one, that is a serious red flag — they are likely unregistered and your insurance will not cover the trek.
Peak season (July, August): Book 4 to 8 weeks ahead. Sembalun trailhead frequently fills 2 weeks in advance. Operators may waitlist clients into November bookings.
Dry shoulder (May, June, September, October): Book 2 to 4 weeks ahead. Most operators have availability with 1 to 2 weeks notice for the Senaru trailhead.
Wet season (December through March): The mountain is officially closed January through March for safety and ecological recovery. November and December bookings are possible but weather-dependent. Many operators do not run treks in this window.
April: Mountain reopens, bookings are fluid, weather is the main variable.
A reputable operator will handle the entire permit and certification logistics so you do not need to interact with the eRinjani portal or coordinate guide and porter selection yourself. Specifically, a competent operator covers:
You provide your passport details, your dates, your dietary restrictions, and your fitness level. The operator handles the rest.
Several quick checks separate reputable operators from cowboys:
1. TNGR registration. Reputable operators are listed on the TNGR official operator registry. Ask for their registration number and verify on the park website.
2. Trekking association membership. All Senaru and Sembalun guides belong to one of several recognized associations (Rinjani Trekking Center, Rinjani Trek Management Board, etc.). Verify your operator works through one of these.
3. Insurance coverage. Ask whether the operator's trek includes basic accident insurance. Many do not; you should arrange your own travel insurance with explicit high-altitude trekking coverage.
4. Group size cap. Reputable operators cap groups at 8 to 10 trekkers per guide. Operators that take 15 to 20 trekkers per guide are sacrificing safety.
5. Trash policy. Ask explicitly: "Do your porters carry all trash off the mountain?" The answer should be unambiguous yes. Check reviews for confirmation.
On the morning of your trek, your operator will drive you to the trailhead checkpoint. You will:
1. Meet your guide (who arrives at the trailhead independently)
2. Present your passport and the QR-coded eRinjani voucher
3. Have your bag inspected for prohibited items (no drones unless permitted, no excessive single-use plastics)
4. Confirm your route and emergency contact details
5. Receive your trail entry stamp
The process takes 30 to 45 minutes. Bring patience and a printed copy of your eRinjani voucher in case mobile signal at the checkpoint is poor.
The permit system is now strict. The villages of Senaru and Sembalun depend economically on the trekking industry, and the local trekking associations actively enforce compliance because their licenses depend on it. Attempting to bypass the system by entering via unmarked tracks is illegal, dangerous, uninsured, and will result in fines and potential deportation if caught. There is no benefit to trying.
Book through a licensed operator. Pay the fees. Get the experience. The system, despite its bureaucratic appearance, exists for good reasons and works reasonably well in 2026.