Carretera Austral: the practical guide
Updated July 2026 · Written from Puerto Varas by Patagonia SimRacing
1,240 km of gravel and asphalt, fjords, hanging glaciers and Valdivian rainforest: the Carretera Austral connects Puerto Montt with Villa O'Higgins like no other road in Chile. Here's what to know before you get behind the wheel.
Book tours on the Carretera Austral
Marble Caves excursions, rafting in Futaleufú and trekking with a certified guide:
The must-sees
1. What the Carretera Austral is
The Carretera Austral (Route 7) links Puerto Montt with Villa O'Higgins over roughly 1,240 km, crossing Palena province (Los Lagos Region) and the entire Aysén Region. Construction began in 1976 and the road still isn't 100% continuous: much of the Puerto Montt-Coyhaique stretch is paved, but heading south gravel dominates — dust in summer, mud in winter. For many, it's Chile's most iconic road trip: fjords, hanging glaciers, Valdivian rainforest and villages of fewer than a thousand people, all along a single road. The best time to drive it is November-March, with long days, dry roads and the ferries running at full frequency.
2. Puerto Montt–Hornopirén and the crossing to Pumalín
The first stage, Puerto Montt to Hornopirén (about 110 km, mostly paved), is the easiest of the lot. From there the land route ends: you must take a ferry to Caleta Gonzalo, the gateway to Pumalín Park — Valdivian rainforest with ancient alerce trees, donated by Douglas Tompkins and now a national park — with short trails to waterfalls and viewpoints of the Chaitén volcano. The full crossing (Hornopirén–Leptepu–Fiordo Largo–Caleta Gonzalo) combines two sailings with a short overland link; book it well in advance in high season, since vehicle space is limited.
3. Futaleufú: world-class rafting
Down a side road off the main route (about 75 km from Villa Santa Lucía), the town of Futaleufú sits on one of the best rafting rivers in the world: turquoise glacial meltwater, rapids from class III to V depending on the section, and an adventure-tourism scene established since the 1990s. Close to the Argentine border, it makes a great base for adding 2-3 extra days to the route — even if you don't raft: the town and valley are photogenic in their own right, with horseback riding and fly fishing as gentler alternatives.
4. Puerto Río Tranquilo and the Marble Caves
On the shore of Lake General Carrera (South America's second largest, shared with Argentina), the town of Puerto Río Tranquilo is the base for reaching the Capillas de Mármol (Marble Caves) by boat or kayak: marble formations polished by the water over thousands of years, with blue and turquoise veins that shift in tone with the light and the lake level. Boat tours run all day, but morning light is usually best for photos; by kayak the experience is slower but lets you slip into corners the bigger boats can't reach.
5. Cerro Castillo and Villa O'Higgins: the end of the road
Before Coyhaique, Cerro Castillo National Park has one of southern Chile's most spectacular multi-day treks, with a glacial lagoon beneath the rock spires that give the mountain its name. Much farther south, the route ends at Villa O'Higgins, the southernmost town in Chile connected by continental road: from there, boat excursions head toward the Northern Patagonian Ice Field and the O'Higgins glacier, one of the largest outside Antarctica and Greenland. For many, getting this far is the whole point of the trip.
Ferries: which ones are unavoidable
The Carretera Austral is not continuous by land: the geography of fjords and ice fields makes a complete road impossible, so several sections can only be crossed by ferry or barge. The best known is Hornopirén–Caleta Gonzalo (actually two sailings with a short land bridge in between), operated by Naviera Austral, which connects with Pumalín Park. Much farther south, the Puerto Yungay–Río Bravo crossing (near Villa O'Higgins) is free and run by the roads authority (Vialidad), with no advance booking: you queue on the day. Naviera Austral and Somarco also cover other maritime legs in the area, as alternatives for skipping a land section. In high season (January-February) the paid ferries fill up weeks ahead, especially if you're traveling with a vehicle: book as soon as your dates are set.
Approximate prices (2026)
| Item | Approximate |
|---|---|
| Hornopirén–Caleta Gonzalo ferry (vehicle, one way) | CLP 50,000–75,000 (≈USD 53–79) |
| Hornopirén–Caleta Gonzalo ferry (passenger) | CLP 3,000–6,000 (≈USD 3–6) |
| 95-octane gasoline (liter, on the route) | CLP 1,200–1,600 (≈USD 1.25–1.70) |
| Accommodation along the route (night, hostel/cabin) | CLP 30,000–80,000 (≈USD 32–84) |
| Boat tour to the Marble Caves | CLP 15,000–30,000 (≈USD 16–32) |
Ferry prices vary by operator and season; confirm the fare and vehicle space availability before locking in fixed route dates.
Book tours on the Carretera Austral
Marble Caves excursions, rafting in Futaleufú and trekking with a certified guide:
How to get there and when to go
- By plane: El Tepual airport in Puerto Montt to start the route from the north, or Balmaceda airport (near Coyhaique) to skip the first stretch and start from the middle of the Carretera Austral.
- In a rental car: check the contract with the rental agency; several restrict or charge extra for driving on gravel or crossing by ferry. Tell them in advance that you're doing the Carretera Austral.
- Bookings: the Hornopirén–Caleta Gonzalo ferry and the Futaleufú and Marble Caves tours should be booked weeks ahead for January-February.
- Fuel: fill the tank every chance you get; there are long stretches without gas stations, especially south of Cochrane.
- Season: November-March for the best weather, dry roads and ferries at full frequency; June-August brings snow, ice and some closures or reduced frequencies.
FAQ
Do you need a 4x4?
Not mandatory for most of the route, but good ground clearance and careful driving on gravel help; in winter with snow or ice, 4x4 traction makes a real difference.
How many days are enough?
4-5 days end to end without stopping; 10-14 days to enjoy the detours at a relaxed pace (Futaleufú, Marble Caves, Cerro Castillo).
Is there signal and fuel the whole way?
No: there are long stretches, especially south of Cochrane, without coverage or formal gas stations. Fill up whenever you can and carry offline maps.
Nearby guides
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