Most people arrive in Cilaos already tired, and that is by design. The cirque sits behind a single road, and the road itself is the first thing you need to understand about this place.
The road in: RN5 and its bends
There is one way to drive into Cilaos: the RN5 from Saint-Louis, on the south coast. The road climbs from sea level into the mountains through a series of switchbacks so frequent that locals count them rather than the kilometres — commonly cited as around 400 bends. Budget roughly an hour of continuous climbing without a stop, more if you pull over at the viewpoints (worth it) or get stuck behind a slow truck (likely).
The road is fully paved and maintained, not a 4x4 track, but it demands attention: tight hairpins, narrow sections with rock overhangs, and drop-offs with no room for distraction. If you are prone to motion sickness, take something before you set off — there is no good moment to stop mid-bend. Rent a manual or automatic with real engine braking if you can, since you will use low gears constantly on the way down. Avoid the drive at night, in heavy rain, or when fog is forecast; visibility drops fast and the bends give you no margin. Most visitors coming from Saint-Gilles or the west coast connect to the RN5 via Saint-Louis, which adds about 30–40 minutes to the total trip — plan on 1h15–1h30 door to door rather than judging it by the map distance alone.
A rental car is close to essential for this trip: there is no train on the island, and while a bus service reaches Cilaos, its schedule is built around residents rather than tourists making a same-day round trip. Our broader guide to driving in Réunion covers rental basics, fuel stops and general road conditions if this is your first time behind the wheel on the island. For the road itself, bend by bend, a dedicated write-up on driving the RN5 and its roughly 400 bends goes into more detail than fits here, including where the tightest sections are and which viewpoints are worth the stop.
Once you understand that the journey itself is part of the experience — not an obstacle before the “real” Cilaos — the rest of the visit makes more sense. This is a place people commit to reaching, and it shows in what they do once they arrive.
Cilaos as the sport and summit cirque
Compare the three cirques and Cilaos is the one built around effort. Salazie has the classified village and the waterfalls; Mafate has total isolation with no road at all. Cilaos has canyons, a mountain, and a road that already tested your nerves before you got out of the car. If you want scenery you can reach by car and admire from a terrace, this may not be the cirque to spend most of your time in. If you want to move — on foot, on a rope, or scrambling toward a summit — it is arguably the best base on the island. A full side-by-side comparison, including which one suits a shorter trip, is in our Cilaos vs Salazie guide; a broader look at all the activities available across the island, canyoning included, is in the adventure activities guide.
Canyoning capital
Cilaos is widely considered the island’s canyoning hub, with several routes graded from introductory to committing:
| Canyon | Level | Typical duration |
|---|---|---|
| Fleurs Jaunes | Beginner to intermediate | Half-day |
| Bras Rouge | Intermediate | Half-day to full day |
| Gobert | Intermediate to advanced | Full day |
Expect a mix of abseiling down waterfalls, natural water slides, and jumps into pools — all with a certified guide and gear provided. Water levels and access depend on recent rainfall, so routes can close after heavy rain; a good outfitter will tell you honestly if a canyon is not runnable that day rather than take you anyway. For a first outing with panoramic mineral scenery, an outfitter runs Fleur Jaune canyoning with vertical, panoramic sections that suits people without prior canyoning experience: a half-day introduction to canyoning through the Fleurs Jaunes canyon.
For something with a stronger sense of journey between two points, a route links Bras Rouge down toward Cilaos itself: a canyoning descent from Bras Rouge into Cilaos, mixing jumps, slides and abseils. Cilaos is not the only place on the island to try it — Saint-Benoît on the east coast runs its own canyons if your itinerary takes you that way, covered in our rafting and canyoning in Saint-Benoît guide — but for sheer choice of routes and operators, Cilaos remains the reference.
Thermal springs, lentils and wine
Cilaos has been a spa town since the 19th century, when its thermal springs were developed for visitors seeking the waters. A soak after a day of canyoning or hiking is a genuine local habit, not a tourist add-on — check current opening hours locally, as the facility’s schedule varies by season.
The cirque’s cool, high-altitude microclimate (Cilaos sits at roughly 1,200 m) also supports two food products found almost nowhere else on the island: lentils (lentilles de Cilaos), grown on the steep terraces around the village and used in the local take on rougail, and a small production of Cilaos wine, made from vines planted on slopes that would look more at home in the Alps than the tropics. Both are worth seeking out at the village market or a table d’hôtes rather than expecting them on every menu — production is small.
Piton des Neiges: the climb
This is the reason many serious hikers come to Cilaos in the first place. At 3,070 m, Piton des Neiges is the highest point in the Indian Ocean and an extinct volcano, distinct from the still-active Piton de la Fournaise on the other side of the island — do not confuse the two.
The standard route starts from Cilaos and climbs through forest and páramo-like terrain to the Caverne Dufour gîte, a mountain refuge near the summit where almost everyone spends the night. Reservations at the gîte are essential, not optional — it has limited beds and fills up weeks ahead in the Austral winter high season (May–October). Book before you commit to a date, ideally through a local operator or the gîte network directly.
The classic plan: hike up to Caverne Dufour in the afternoon (roughly 3–4 hours from the trailhead), sleep a few hours, then set off again around 2–3 a.m. for the final push to the summit in time for sunrise. The reward, weather permitting, is a 360-degree view over the whole island from above the clouds — genuinely one of the best viewpoints in Réunion, but entirely dependent on clear skies. Nights near the summit can approach freezing even in the tropics, so pack a warm layer, headlamp, and proper footwear regardless of how hot the coast felt that morning.
For travellers who want the experience organised end to end — transport, guide and the Caverne Dufour logistics handled — a guided package covers the full ascent: a guided overnight climb of Piton des Neiges with the sunrise summit push. If you would rather see the scale of the massif from the air first, a scenic flight over the peak gives useful context before or after the hike: a scenic flight passing above 3,200 m near Piton des Neiges.
This is a serious mountain outing, not a casual walk, and it is worth reading a dedicated planning resource before you commit a date to it. Our Piton des Neiges summit hike guide covers fitness expectations, what to pack for the near-freezing night at altitude, and how to structure the gîte booking around the rest of your trip. If the overnight climb is more than your group wants to take on, the island still has plenty to offer — see our roundup of the best hikes in Réunion for options at every level, or family-friendly hikes if you are travelling with kids who are not up for a 3,070 m summit push.
Shorter hikes and guided options
Not everyone wants a summit night. If you have half a day rather than two, La Chapelle is a shorter, well-marked hike inside the cirque with dramatic rock formations and a waterfall, manageable for reasonably fit walkers without an overnight commitment: a guided half-day hike to the La Chapelle rock amphitheatre.
For a first visit that covers the cirque’s viewpoints, village and a sense of orientation without a strenuous hike, a full-day guided tour from the coast handles the drive up the RN5 for you — worth considering if you would rather not do the bends yourself on your first trip: a full day guided tour of Cirque de Cilaos including breakfast.
Getting there and around
Most visitors drive up from the west coast via Saint-Louis, since Saint-Gilles and Saint-Leu are the most common bases on the island. There is no shortcut: every route into Cilaos funnels through the same RN5. Once in the village, most of what you need — outfitters, restaurants, the market, trailheads — is walkable, but a car is essential to get there and to reach some canyon or hike trailheads just outside the village. For a broader sense of how car-dependent the island is outside Cilaos too, our getting around Réunion guide lays out the alternatives, such as they are.
For hikers without their own transport or planning logistics, checking current trail status before setting out is worth the five minutes — heavy rain can close sections of the Piton des Neiges trail with little notice; our hiking guides point to where to check.
Cilaos also works well as a day trip if your schedule is tight, though the drive eats into the time you actually spend in the cirque; our Cilaos day trip from Saint-Gilles guide lays out a realistic one-day plan. Staying overnight opens up canyoning or the summit climb, and for lodging options in the village and the cirque more broadly, see our where to stay in Réunion guide. If you are still deciding how many days the whole island trip needs, including a stop in Cilaos, how many days in Réunion Island walks through the trade-offs, and our things to do in Cilaos guide rounds up options beyond canyoning and the summit climb for a slower visit.
Cilaos as part of a longer trip
Because it sits behind that one long access road, Cilaos rewards being built into a multi-day plan rather than squeezed between other stops. If you want to see all three cirques rather than just this one, our three cirques in four days itinerary sequences Cilaos alongside Salazie and a Mafate viewpoint without doubling back on the RN5 more than necessary. Hikers with more time and the fitness for it sometimes link Cilaos to a crossing into Mafate on foot — see the Mafate three-day trek for what that involves, though note it is a separate, more demanding undertaking from the Piton des Neiges climb described above. If the volcano is also on your list, a Piton de la Fournaise weekend itinerary pairs naturally with a Cilaos stop earlier or later in the same trip, since both are mountain outings best done with a buffer day around them.
When to visit
May to October (Austral winter) is the better season for both hiking and canyoning: drier trails, more stable weather, and clearer summit views for the Piton des Neiges sunrise. It is also noticeably cooler at altitude — expect chilly mornings and near-freezing nights near the summit.
November to April (Austral summer) brings more rain, higher water levels that can close canyons, and cyclone season across the island; a Piton des Neiges attempt in this window carries a higher risk of being weathered out. If you are set on the summit climb, build a buffer day or two into your itinerary rather than pinning everything to one date. For how this plays out month by month across the whole island, see our Réunion weather by month guide; if you are travelling in the Austral summer specifically, the cyclone season guide explains what a tropical system actually means for a trip already booked, including for a mountain stay like Cilaos where road access can be cut.
Cilaos, canyoning and Piton des Neiges: FAQ
How difficult is the drive to Cilaos?
The RN5 from Saint-Louis is fully paved but has around 400 bends and takes about an hour of continuous climbing. It is not technically dangerous if driven carefully at a slow pace, but it is tiring and unsuitable for driving at night or in poor visibility.
Do I need to book the Caverne Dufour gîte in advance?
Yes. The gîte near the Piton des Neiges summit has limited capacity and is essential for the standard overnight-climb itinerary. It fills up weeks ahead during the May–October high season, so book before finalising your dates.
Is Piton des Neiges the same as Piton de la Fournaise?
No. Piton des Neiges (3,070 m) is an extinct volcano near Cilaos and the highest point in the Indian Ocean. Piton de la Fournaise, on the other side of the island, is a separate and still-active volcano.
Can beginners try canyoning in Cilaos?
Yes, routes like Fleurs Jaunes are designed for people with no prior canyoning experience and run with a certified guide and full equipment. More committing routes like Gobert are better suited to those with some prior experience or a good fitness level.
What is the best season to visit Cilaos?
May to October, the Austral winter, offers drier trails, more reliable canyon access and clearer summit views. November to April brings more rain, cyclone risk, and a higher chance of hikes or canyons being cancelled for weather.
Can I visit Cilaos as a day trip from the coast?
Yes, a day trip is possible and common, especially with a guided tour that handles the drive. But between the RN5 drive time in both directions and the cirque’s activities, a day trip leaves limited time for anything beyond a short hike or a village visit — an overnight stay allows for canyoning or the Piton des Neiges climb.
Are the thermal springs open year-round?
The thermal facility operates on a seasonal schedule that can vary, so check current opening times locally or with your accommodation before planning around it.
How does Cilaos compare to Salazie or Mafate?
Cilaos is the cirque built around sport and the Piton des Neiges summit climb. Salazie has the classified village of Hell-Bourg and the island’s most accessible waterfalls. Mafate has no road at all and is reached only on foot, making it the choice for multi-day trekking and total isolation.
