The Sembalun trail is the standard Mount Rinjani trekking route — starting from Sembalun village (1,200m), crossing exposed savanna grasslands, and climbing to Plawangan Sembalun crater rim camp (2,639m) over 6-8 hours of hiking. Most popular route for the 3-day Senaru-Sembalun traverse and 2-day summit attempts.
# Hiking the Mount Rinjani Sembalun Trail
The Sembalun trail is the standard route up Mount Rinjani for trekkers attempting the summit, the crater lake, or the full 3-day Senaru-Sembalun traverse. Starting from Sembalun village at 1,200m and climbing to Plawangan Sembalun crater rim camp at 2,639m, the trail covers 6-8 hours of hiking through exposed savanna grasslands and steep climbing sections.
Distance: ~10 km from Sembalun village to crater rim camp
Elevation gain: 1,439m (1,200m to 2,639m)
Hiking time: 6-8 hours including breaks
Difficulty: Advanced (significant elevation gain, exposure, length)
Trail type: Forest path → savanna grasslands → steep volcanic scree
The trail can be broken into three main sections:
### Section 1: Forest path (1,200m to 1,500m, 1.5 hours)
The trail begins in Sembalun village and ascends through forested foothills. Generally shaded, moderate gradient, and a gentle warm-up for the harder sections ahead. You'll pass small farms and traditional Sasak agricultural land.
### Section 2: Savanna grasslands (1,500m to 2,200m, 3-4 hours)
The trail emerges from forest into open savanna grasslands. This is the iconic "Rinjani savanna" featured in photographs — rolling grass-covered hills with the volcano rising in the distance. Characteristics:
This section is where the heat becomes a real factor. Start early (7am) to cross the savanna before midday sun. Wear a wide-brimmed hat and apply sunscreen frequently. Carry 2-3 liters of water just for this section.
### Section 3: Steep climbing to crater rim (2,200m to 2,639m, 2-3 hours)
The final approach to Plawangan Sembalun crater rim camp involves steep climbing on volcanic terrain. The trail becomes:
This is the hardest part of day 1. Your guide will set a manageable pace with frequent short breaks. Don't rush ahead.
Plawangan Sembalun crater rim camp is at 2,639m on the eastern rim of Mount Rinjani's crater. Arrival typically:
Spend the rest of the afternoon resting, eating, and acclimatizing. Sleep early — summit push starts at 2am.
From Plawangan Sembalun, your options for day 2:
Summit attempt: 2am push to 3,726m summit, sunrise from peak, return to camp by 9am
Crater lake descent: Hike down to Segara Anak crater lake (2,000m) with hot springs
Senaru rim camp: Continue to Plawangan Senaru on the western rim for a different view
Senaru descent: 3-day traverse ends with descent through Senaru forest to Senaru village
The Sembalun trail is your route up; day 2-3 routes vary based on your trek package.
The Sembalun trail is genuinely advanced trekking. You should:
If you're not in shape or have heat/altitude concerns, consider:
The 3-day standard Rinjani trek can start from either village. Sembalun starts most often because:
1. Iconic savanna: The grassland section is photogenic and unique
2. Direct route to summit: Sembalun is closer to summit than Senaru
3. Better day 1-2 logic: Climb harder day, easier descent
4. Operator preference: Most reputable operators default to Sembalun start
Senaru is the traditional alternative — shorter, more forested, but less dramatic landscape.
The trailhead village has functional but basic infrastructure:
Most trekkers spend the night before their climb at a Sembalun homestay to acclimatize and start fresh.
Start at Sembalun village in northeast Lombok. 3 hours from Senggigi (90 km), 4 hours from Kuta Lombok (130 km), 3.5 hours from LOP airport. Most trek operators arrange pickup from your accommodation as part of trek packages. Trail starts at the Rinjani Trek Centre (RTC) in Sembalun village.
Sembalun trail vs Senaru trail: Sembalun is more exposed (savanna), longer day 1, but more iconic. Senaru is shorter, more forested, and easier on day 1. Most 3-day Rinjani treks combine both — Sembalun ascent + Senaru descent. Choose Sembalun for more dramatic landscape; Senaru for forest beauty.