The Senaru trail is the forested north-face route up Mount Rinjani, climbing from Senaru village (601m) through dense montane jungle and cloud forest to Plawangan Senaru crater rim camp (2,641m) over 7-9 hours. It's longer and steeper than Sembalun on day 1 but stays mostly shaded — preferred by trekkers who want forest beauty over open savanna.
# Hiking the Mount Rinjani Senaru Trail
The Senaru trail is the north-face route up Mount Rinjani — the older, more forested, and more humid of the two main approaches. Where the Sembalun trail crosses sun-bleached savanna, Senaru threads through montane jungle and cloud forest, gaining over 2,000m of elevation under near-continuous canopy. It's the route trekkers choose when they want forest atmosphere, less sun exposure, and a quieter ascent.
Distance: ~9.5 km from Senaru village to Plawangan Senaru crater rim camp
Elevation gain: 2,040m (601m to 2,641m)
Hiking time: 7-9 hours day 1 ascent
Difficulty: Advanced — significant elevation gain on steep, humid terrain
Trail type: Cultivated foothills → primary jungle → cloud forest → volcanic ridge
The trail is structured around three resting posts (Pos 1, 2, 3) with the crater rim camp as the final goal.
### Senaru village to Pos 1 (601m to 1,300m, 1.5 hours)
A gradual climb through clove and coffee farms before entering the national park gate. The path is wide, mostly shaded, and serves as the warm-up. You'll pass local farmers and porters loading up for the climb.
### Pos 1 to Pos 2 (1,300m to 1,500m, 1 hour)
The trail enters primary jungle. Roots, mossy rocks, and a thicker canopy. There's a small spring at Pos 2 — a reliable refill point if you're carrying treatment tablets or a filter. Most trekkers stop here to eat.
### Pos 2 to Pos 3 — the "thousand stairs" (1,500m to 2,000m, 2-3 hours)
This is the hardest section of day 1. The trail steepens dramatically into a near-continuous staircase of exposed roots and rough-cut steps. The canopy is densest here — this is full cloud forest, with hanging moss and constant moisture. Expect:
Pace this hour slowly. Pushing the staircase gets people into trouble — twisted ankles and exhaustion are common here.
### Pos 3 to Plawangan Senaru crater rim (2,000m to 2,641m, 2-3 hours)
The trail emerges from dense forest into stunted, wind-shaped vegetation as you approach the volcanic ridge. The grade eases briefly, then climbs steeply for the final push to the crater rim. You'll feel the altitude through this section. Views begin to open up — looking back, the forest sea drops away to north Lombok and the Gilis on a clear day.
Plawangan Senaru sits on the western rim of Rinjani's caldera at 2,641m. Arrival is typically late afternoon. Sunset over the crater lake is one of the best views in Indonesia.
Senaru's defining feature is its forest. This is genuine montane cloud forest — not the dry pine you might know from elsewhere. Characteristics:
The trade-off: you're shaded almost the entire climb, which is a real advantage on hot days. The cost: humidity is exhausting and the forest hides views until you reach the rim.
Yes, there are leeches. They're not dangerous but they are persistent in wet conditions. Practical defence:
Leeches are mostly an issue October–April. Dry season July–September sees few of them. Local guides carry salt and tobacco for stubborn ones.
The west-rim camp is smaller, quieter, and less crowded than Plawangan Sembalun on the east rim. Facilities are basic — flat tent platforms, a couple of pit toilets a short walk away, no shop. Porters set up tents and cook meals on small gas stoves.
Sunset views look directly into the crater — Segara Anak lake reflecting the western sky, with Gunung Baru Jari volcano steaming in the centre. Night temperatures drop to 5-10°C, with the summit push starting around 2am for groups attempting Rinjani's 3,726m peak.
Summit attempt: Long traverse around the crater rim to the eastern side, then 2am summit push from Plawangan Sembalun
Crater lake descent: Down into the caldera to Segara Anak lake (2,000m) and the hot springs at Aiq Kalak
Reverse traverse: Continue east to Plawangan Sembalun and descend via Sembalun village (the standard 3-day route in reverse)
Out-and-back: Return down the Senaru trail on day 2 — this is the 2-day "Senaru to crater rim and back" package
Senaru ascent suits trekkers who:
Sembalun ascent suits trekkers who want the iconic photographic landscape and the standard 3-day Sembalun-up, Senaru-down direction.
Senaru's day 1 is harder than Sembalun's by most measures — more elevation gain, longer hiking time, steeper terrain, more humid. The forest shade helps but doesn't fully offset the extra vertical metres. First-time trekkers often underestimate this. If you're choosing your direction, ascending Sembalun and descending Senaru is genuinely easier overall.
Senaru village is in north Lombok at the foot of Rinjani's north slope. 2 hours from Senggigi (60 km via Pemenang), 1 hour from Bangsal/Gili harbour, 3.5 hours from LOP airport. The Rinjani Trek Centre (RTC) Senaru handles permits and guide arrangements. Most operators include transfer from Senggigi, Mataram, or the Gilis in trek packages.
Senaru vs Sembalun trail: Senaru is shaded jungle and cloud forest, longer day 1 (7-9 hours, 2,040m gain), more humid, leech exposure. Sembalun is open savanna, slightly shorter (6-8 hours, 1,439m gain), hotter, more iconic landscape. Most 3-day traverse treks ascend Sembalun and descend Senaru — the gentler way down. Choose Senaru ascent if you prefer forest to grassland and tolerate humidity over heat.