Four days in Réunion Island: west coast, volcano, Cilaos and Saint-Pierre

Three days covers the lagoon, the volcano and one cirque. A fourth day answers a different question: what happens after Cilaos, once you come back down the mountain instead of returning straight to Saint-Gilles-les-Bains? This route sends you south to Saint-Pierre instead, closing the loop on the island’s second-largest town rather than repeating a lagoon day you have already had.

This is not a tour of the whole island. The wild south, the humid east coast and the green cirque of Salazie stay off this itinerary on purpose — they need their own days and belong on the five-day version or later. What follows is four solid days with a rental car, real driving times instead of optimistic kilometre counts, and one new stop that earns its place: Saint-Pierre.

Why add Saint-Pierre instead of going further

The three-day loop (Saint-Gilles, the volcano, Cilaos) already uses the west coast and the interior well. The obvious next move for a fourth day is not to squeeze in the wild south or the east — both are a genuinely different corner of the island, wetter, further, and better done as full days rather than tacked onto a tired afternoon. The more honest addition is geographic: after Cilaos, you are already closer to the south than to the west. Saint-Pierre sits about 40 minutes below Cilaos by road, and it gives you something the lagoon town of Saint-Gilles does not — a working market, a proper harbourfront, and the island’s most active nightlife outside the capital. It also marks a real shift in landscape and mood, from the dry, tourist-oriented west to the more lived-in south.

If you are also curious about the wild south (Saint-Joseph, Saint-Philippe, the Grand Brûlé lava flows) or the humid green east, those stay outside this plan. See wild south and east coast in two days or the five-day itinerary to fold them in properly, with their own driving time and their own weather logic — the east gets far more rain than the west, and a rushed half-day there tends to disappoint.

At a glance

Day	Base	Focus	Approx. driving
1	Saint-Gilles-les-Bains	Lagoon, coast, boat trip	Local, under 30 min
2	Saint-Gilles-les-Bains	Piton de la Fournaise day trip	1.5–2 h each way
3	Cilaos	Drive up, canyoning or hiking	1–1.5 h from the coast
4	Saint-Pierre	Descend, market, seafront, night	40 min–1 h from Cilaos

Prices below are per-person ranges in euros (€) and move with season and operator; check the current figure on the booking page before you commit.

Day 1: Saint-Gilles-les-Bains

Base yourself in Saint-Gilles-les-Bains for the first night, on the island’s dry, sunny west coast. This day is about the lagoon and the coast, not about ticking off every West Coast sight — that level of detail belongs on the dedicated things to do in Saint-Gilles guide. Swim and snorkel inside the lagoon, between Saint-Gilles and l’Hermitage — outside the reef and away from surveilled beaches, swimming and watersports are restricted by prefectural order because of shark risk, so stay inside the marked zone.

In the afternoon or early evening, a boat trip from the marina is the best use of a half-day here. Between roughly July and October, humpback whales pass close to the coast; year-round, spinner dolphins are a regular sight just offshore. a small-boat trip out of Saint-Gilles to look for dolphins and, in season, humpback whales runs from around €45–70 per person for two to three hours. Sightings are never guaranteed on any operator’s trip, whale season or not.

Sleep in or near Saint-Gilles-les-Bains again tonight; day 2 leaves from here early.

Day 2: Piton de la Fournaise

This is a full day, not a stop on the way to somewhere else. Leave Saint-Gilles before dawn — the drive up to the volcano’s Pas de Bellecombe viewpoint takes 1.5 to 2 hours depending on your starting point and traffic around Saint-Pierre or Le Tampon, and cloud typically rolls in by mid-morning, so early departure is not optional.

The route and the hike itself — the walk across the Plaine des Sables, the view from Pas de Bellecombe, and the roughly 5-hour round trip down into the Enclos Fouque toward the Dolomieu crater when it is open — are covered in detail on the Piton de la Fournaise day trip from Saint-Gilles guide, so this itinerary won’t repeat it point by point. The one thing worth restating: access to the Enclos can close without notice during an eruption alert, and no operator or itinerary can promise you will see lava or reach the crater rim. Check the current access status before you commit to the hike.

If you’d rather see the volcano without the hike, or in addition to it, a scenic helicopter flight over the volcano’s crater and lava fields (from around €180–260 for 20–30 minutes) gives a view the hike can’t, on a clear-weather morning.

For those doing the hike itself, a guided day hike to the volcano, with transport included from the coast (around €90–130) removes the early-morning drive from your own to-do list.

Return to the coast in the afternoon; sleep again near Saint-Gilles or push on toward Saint-Louis if you want a shorter drive to Cilaos the next morning.

Day 3: Cilaos

This is where the itinerary turns inland. The road up to Cilaos from Saint-Louis is the RN5, with its roughly 400 bends — budget about an hour of driving without stops, more if you’re not used to mountain switchbacks, and plan on the drive itself being part of the day, not a formality before it. The road’s reputation is deserved; see driving the road to Cilaos and its 400 bends if you want the detail before you set off, and driving in Réunion Island for general road conditions across the island.

Once up in the cirque, Cilaos rewards a full day: hiking trails into the surrounding rampart, thermal springs, the village’s lentils and wine, and the island’s best canyoning terrain. If you want to get into the water rather than just look at it,

a canyoning descent through Cilaos’s Fleur Jaune canyon, with abseils and natural pools

runs from roughly €70–100 for a half-day and needs no prior experience beyond basic fitness and comfort with heights. The full range of things to do here — hikes, gîtes, the Piton des Neiges approach — is on the things to do in Cilaos guide and the Cilaos day trip from Saint-Gilles guide, since a proper Piton des Neiges summit attempt needs its own overnight and doesn’t fit inside this four-day frame.

Sleep in Cilaos. Staying overnight rather than day-tripping from the coast is what makes day 4’s descent to the south make sense — you’re already up here, so the natural next move is down toward Saint-Pierre rather than back the way you came.

Day 4: Cilaos to Saint-Pierre

This is the day that separates this itinerary from the standard three-day loop. Instead of driving back down to Saint-Louis and returning to Saint-Gilles, head down and continue south to Saint-Pierre, the Sud’s capital. Reckon on 40 minutes to an hour on the road from Cilaos, depending on where in town you’re starting and stopping — again, think in travel time on these mountain roads, not kilometres.

Saint-Pierre is a genuinely different register from the west coast towns: less built for tourism, more for the people who live there. The covered market runs daily, but the big one is the Saturday forain market along the seafront — produce, spices, street food, and a good place to eat lunch cheaply and well if your dates line up. The waterfront itself (front de mer) is where locals walk, run and gather in the evening, and it’s also where Saint-Pierre’s nightlife concentrates — bars and restaurants stay livelier here later into the evening than anywhere on the west coast. None of this duplicates what Saint-Gilles offered on day 1: this is a town day, not a beach day.

If you have a few hours before dark, the Saga du Rhum distillery museum (Isautier) is a short drive from the centre and a reasonable way to spend an hour if rum and sugar history interest you.

For a different vantage on the south before you finish up, an island-overview helicopter flight departing from Saint-Pierre (from around €200–300 depending on route and duration) is a way to see terrain this itinerary otherwise skips — the wild south’s coastline, in particular — without adding a full extra day.

For the full list of what else the town and this corner of the island offer, see things to do in Saint-Pierre. If Saint-Pierre and the south’s pace appeal to you, the wild south day trip from Saint-Gilles guide and the wild south and east coast in two days itinerary pick up exactly where this one stops, covering Saint-Joseph, Saint-Philippe and the Grand Brûlé lava flows that this four-day frame deliberately leaves out.

Fly home from Pierrefonds airport (ZSE), just outside Saint-Pierre, if your return flight allows it — it avoids the drive back north to Roland-Garros entirely. If your return flight is from Roland-Garros instead, budget roughly 1.5 hours back up the coast.

What this itinerary leaves out

Four days is enough for the coast, the volcano, one cirque and one southern town — not for the whole island. Three things stay out on purpose:

• The wild south (Saint-Joseph, Saint-Philippe, the Grand Brûlé lava flows) — worth a full day on its own, not a rushed detour after Saint-Pierre.
• The humid east coast (Sainte-Rose, Saint-Benoît, Saint-André) — wetter, greener, and far enough from this loop that it needs its own day.
• Salazie, the island’s greenest cirque — a genuine alternative to Cilaos, not an add-on to it; doing both cirques properly needs closer to a week.

If any of those interest you, the five-day Réunion Island itinerary or one week in Réunion Island fold them in with the driving time and overnight stops they actually require. Trying to add them onto this four-day frame without extra nights is the most common way this trip goes wrong.

Practical notes

A rental car is effectively required for this route — Car Jaune’s interurban buses connect coastal towns but move slowly and don’t reach up into Cilaos on a useful schedule. See renting a car in Réunion Island before you arrive.

Réunion Island is French and in the EU but outside the Schengen area: a Schengen visa alone does not cover entry. EU and EEA citizens travel with a valid ID card or passport; other nationalities should check the rules that apply specifically to Réunion. Currency is the euro; cards are accepted almost everywhere on this route, though it’s worth carrying some cash for Cilaos’s smaller shops and the Saint-Pierre market stalls.

For a broader sense of what four days like this costs beyond the tours listed above — accommodation, car hire, meals — see Réunion Island trip cost.

FAQ: four days in Réunion Island

Is four days enough to see Réunion Island properly?

Four days covers the west coast lagoon, the volcano and one cirque (Cilaos) plus a southern town (Saint-Pierre) at a reasonable pace with a rental car. It does not cover the wild south, the east coast or Salazie — those need a five-day or longer trip.

Why does this itinerary add Saint-Pierre instead of the wild south?

Saint-Pierre sits directly on the road down from Cilaos, roughly 40 minutes to an hour away, so it fits the existing route without extra driving. The wild south and east coast are further afield and are better done as full days on a longer itinerary rather than squeezed in here.

How long does the drive from Cilaos to Saint-Pierre actually take?

Reckon on 40 minutes to an hour, depending on where in each town you start and finish. The distance in kilometres is short, but Réunion’s mountain roads make travel time, not kilometre count, the number that matters.

Do I need a car for this itinerary?

Yes. A rental car is close to essential to move between Saint-Gilles, the volcano access road, Cilaos and Saint-Pierre within four days; the interurban Car Jaune bus network doesn’t serve this route on a workable schedule.

Can I see lava on the Piton de la Fournaise day?

Not reliably. The Enclos Fouque area around the Dolomieu crater can be closed by the prefecture during an eruption or alert, and no tour or itinerary can guarantee lava is visible even when it’s open. Check current access before the trip.

Is Saint-Pierre worth a full overnight, or just a few hours?

An overnight is worth it if you want to see the seafront and nightlife in the evening, which is Saint-Pierre’s main draw over a quick daytime stop. A few hours is enough to cover the market and the Isautier distillery if your schedule is tighter.

Does this itinerary include Salazie?

No. Salazie is a separate cirque from Cilaos, reached by a different road, and pairing both properly needs closer to a week. It’s covered on longer itineraries such as the five-day and one-week routes.

What’s the best time of year to do this route?

The dry, cooler austral winter (May–October) is best for the volcano hike and Cilaos, with clearer mornings and less rain. It also overlaps with whale season (roughly June/July–October) for the day 1 boat trip. The austral summer (November–April) is hotter, wetter and includes cyclone season, which can disrupt driving and boat trips with little notice.