Forget smooth coastal highways and well-marked turnoffs. Chile’s Ruta 7, known as the Carretera Austral, is a 1,240-kilometer line scratched through some of the most dramatic and least-visited wilderness in South America. It runs from Puerto Montt in the Chilean Lake District to the tiny outpost of Villa O’Higgins in Chile’s Aysén region, the country’s wildest and least-populated territory, where the road simply ends and there’s nowhere left to go but a lake, a border, and the Southern Patagonian Ice Field.
Roughly half the road is paved—the rest is gravel, mud, and the occasional stretch that makes you question whether this qualifies as a road at all. You will cross fjords by ferry, refuel at stations that may or may not have gasoline, and drive for hours through landscapes so empty and oversized that distances on the map stop meaning anything. This is not a highway you rush through. It gives back everything you put into it.
The Road Itself
The Carretera Austral exists because of one man’s obsession. In the 1970s, Chilean dictator Augusto Pinochet ordered the construction of a highway through the Aysén region, a territory so cut off by fjords, ice fields, and mountains that its communities could only be reached by sea or by crossing into Argentina. Thousands of soldiers and laborers spent over two decades blasting, grading, and bridging their way through some of the most difficult terrain on the continent. Construction continued long after Pinochet left power in 1990, and the road didn’t reach Villa O’Higgins until 2000. Large stretches remain unpaved to this day, and winter weather occasionally closes sections temporarily, a reminder that the landscape here has never fully submitted to modern infrastructure.
The landscape the road passes through is staggering in its variety. The northern third, the Palena province coast, is Valdivian temperate rainforest, one of the rarest forest ecosystems on the planet, so dense and green it feels tropical despite sitting at the same latitude south as London sits north. The central Aysén stretch opens into turquoise glacial lakes, dry steppe, and basalt peaks that wouldn’t look out of place in Patagonia’s greatest hits reel. The deep south, from Cochrane to the end of the road, is the wildest: ice-fed rivers the color of copper sulfate, thousand-year-old cypress boardwalk towns, and a final stretch of 244 kilometers with no fuel, no cell service, and no ATMs. The Carretera Austral is not one landscape. It is many landscapes stacked end to end, each one more improbable than the last.
Before You Start Driving
A few realities worth absorbing before you commit.
A local guide changes everything. The Carretera Austral is not a road you want to figure out on the fly. Ferry schedules shift, fuel stations close without notice, and the best stops are often unmarked turnouts that don’t appear in any guidebook. EcoVoyager pairs you with experienced local drivers and guides who know this road and region intimately, handle the logistics, and get you to places you’d drive right past on your own.
Cash is king, and ATMs are scarce. The only reliably functioning ATMs on the entire 1,240-kilometer route are in Coyhaique and Cochrane. Chaitén sometimes has one that works. Carry enough Chilean pesos for your full trip south of Coyhaique, and keep a reserve. Many guesthouses, boat operators, and fuel stations are cash only.
Fuel requires planning. Stations exist at roughly 150 to 200-kilometer intervals, but not all carry both gasoline and diesel. Puyuhuapi, for instance, sells diesel only. The 244-kilometer stretch from Cochrane to Villa O’Higgins has no fuel whatsoever. Fill up every time you see a pump.
Ferries are mandatory, not optional. Two ferry crossings are required to drive the full northern Carretera Austral from Puerto Montt. In peak season (January and February), spots sell out days in advance. Book ahead or build schedule flexibility into your first week.
Cell service is intermittent to nonexistent. You’ll have coverage in Coyhaique and patchy signal in a handful of towns. Everywhere else, you’re on your own. Download offline maps before you leave.
Northern Section: Pumalín to Puyuhuapi
Most travelers start the northern section by taking a ferry from Puerto Montt to Chaitén or flying into Chaitén’s small airstrip from Puerto Montt or Puerto Varas. Either way, once you’re on the road heading south from Chaitén, the Valdivian temperate rainforest closes in fast. This is one of the most biodiverse forest ecosystems in South America, and it looks the part: moss draping every branch, understory so dense you lose sight of anything ten meters off the road, air that smells like wet earth. Moisture here is a constant, and the forest runs on it.
Chaitén
The town of Chaitén is a five-street town of corrugated metal roofs and corner shops that serves as the gateway to Pumalín and the northern Carretera Austral. But the setting is remarkable: the active volcano looms directly behind town, and on clear days you can see the jagged peak of Volcán Corcovado to the south, one of the most photogenic mountains in northern Patagonia. Playa Santa Bárbara, a black sand beach north of town, has dolphins and sea lions offshore and almost no visitors.
Pumalín Douglas Tompkins National Park
Pumalín is the first major stop and one of the most important conservation stories in the Americas. In 1991, Douglas Tompkins, co-founder of The North Face, began buying degraded farmland here to restore it to wilderness and donate it to Chile. The project drew suspicion and conspiracy theories, but Tompkins and his wife Kristine persisted. By his death in a kayaking accident in 2015, the couple had conserved over 800,000 hectares across Chile and Argentina, the largest private land conservation effort in history. Pumalín became a national park in 2018.
The hiking here is world-class and almost deserted. The Sendero Alerces trail winds through groves of alerce trees, a species often called the “Patagonian redwood” that can live over 3,000 years. And the hike to the crater rim of Volcán Chaitén, the volcano that buried the town in ash in May 2008, is a three-hour round trip that ends with you standing on the edge of a steaming, active crater, looking down at a lava dome. The 2008 eruption forced the complete evacuation of Chaitén. The town was rebuilt a few kilometers from the original site. The old town is still partially buried.
Villa Santa Lucía
About an hour south of Chaitén, you pass through what remains of the small town of Villa Santa Lucía. On December 16, 2017, a glacial moraine failure triggered by torrential rainfall sent seven million cubic meters of rock and debris roaring down a river valley and into the village. Twenty-two people were killed and half the town was destroyed. It is a sobering reminder that this region is geologically young and violently active.
This is also the junction for Futaleufú, a 77-kilometer detour east to one of the best whitewater rivers on the planet. The name means “Big River” in Mapudungun, the Mapuche language, and the Class IV and V rapids draw serious kayakers and rafters from around the world. Even if you don’t run the river, Lake Yelcho along the route is a major fly fishing destination (the Chilean record brown trout, 17 kilograms, came out of this lake) and worth the drive for the scenery alone.
Puyuhuapi
Puyuhuapi is the kind of place that could only exist on a road like this. In 1935, four young Germans from the Sudetenland arrived here with a Chilean government land grant and a plan to farm. The men cleared virgin rainforest, built houses in the German style with help from carpenters they brought from Chiloé Island, and settled in to wait for their families. When World War II broke out, those families were stranded in Europe until 1947. The fusion of German and Chilote building traditions gives Puyuhuapi its distinctive look: steep-roofed, shingled houses that could be from the Black Forest, built with indigenous construction techniques from an island 500 kilometers to the north.
Puyuhuapi is also the access point for the Termas de Puyuhuapi hot springs, reachable only by boat across the fjord, and for Queulat National Park. The park’s centerpiece is the Ventisquero Colgante, a hanging glacier wedged improbably between two rock faces, dripping meltwater into the forest below. The word “Queulat” comes from the extinct Chono language and translates roughly to “sound of waterfalls,” which is exactly what the park sounds like.
Central Section: Coyhaique to Puerto Río Tranquilo
South of Puyuhuapi the rainforest begins to thin, the sky opens up, and the landscape shifts from green claustrophobia to wide-open steppe. By the time you reach Coyhaique, the regional capital and the only real city on the entire Carretera Austral, you feel like you are in a different country entirely.
Coyhaique is the place to stock up on everything. This is the last reliable ATM, the last full supermarket, and the last town where you can count on finding whatever you forgot to pack. Fill your tank. Withdraw cash. Buy snacks you won’t find again for a thousand kilometers.
Cerro Castillo National Park
An hour and a half south of Coyhaique, the basalt spires of Cerro Castillo appear above the highway like a fortress wall. This is where the pavement ends heading south, and it’s also where the Carretera Austral starts to feel genuinely wild.
Cerro Castillo National Park may be the most underrated destination in Patagonia. The day hike to Laguna Cerro Castillo is a steep, 14-kilometer out-and-back that climbs through lenga forest and scree fields to a glacial lake sitting directly beneath the peak’s jagged turrets. Six to eight hours, and you might share the trail with a dozen people on a busy day. For context: the equivalent viewpoint in Torres del Paine sees 500 hikers pass through before lunch.
But the real draw is the four-day Las Horquetas circuit, a 51-kilometer trek through exposed mountain passes, glacier-fed lakes, and terrain that shifts from deep forest to alpine grassland within a single morning. It is widely considered one of the best multi-day treks in South America, and it is almost empty. Hikers who have done both consistently describe it as the equal of the Torres del Paine W Trek, with a fraction of the traffic.
Cerro Castillo is also gaucho country. Horseback rides run partway to the lagoon, and multi-day equestrian trips through the Avellano Valley pass beneath the Avellano Towers, massive granite walls and hanging glaciers. The highway through the park, near the Ibáñez entrance, is one of the most reliable places in Chile to spot the huemul, the endangered South Andean deer that appears on the country’s coat of arms. They are sometimes grazing right beside the road.
Lago General Carrera and the Marble Caves
South of Cerro Castillo the road drops toward Lago General Carrera, and the first time you see it you will pull over. The lake is the second largest in South America, shared with Argentina where it’s called Lago Buenos Aires. Its color is an almost aggressive turquoise caused by glacial rock flour suspended in the water. Depending on the light, it shifts from milky jade to an almost electric blue.
Puerto Río Tranquilo, on the lake’s western shore, is the access point for the Marble Caves (Cuevas de Mármol or Capillas de Mármol), a series of water-carved marble formations along the lakeshore that have been sculpted by wave action over 6,000 years. Boat tours run daily, but if you want to actually enter the caves, go by kayak. The tour boats are too large to fit inside the smaller caverns.
A fair warning: Puerto Río Tranquilo is the busiest and most tourist-oriented town on the southern Carretera Austral. Tour operators line the waterfront, restaurants are crowded in January, and prices are higher than anywhere else on the road. It’s still worth the stop. Just know what you’re walking into.
Valle Exploradores and the Glacier
From Puerto Río Tranquilo, a spur road runs 80 kilometers west through forest, past waterfalls, hanging glaciers, the mirror-still surfaces of Lago Bayo and Lago Tranquilo to the Exploradores Glacier viewpoint. The drive itself is an experience: gravel road, no guardrails, and on a clear day you can see Monte San Valentín, which at 4,058 meters is the highest peak in all of Patagonia. Guided ice hikes on the glacier are available and highly worthwhile.
Southern Section: Cochrane to Villa O’Higgins
This is where the road gets serious. South of Puerto Río Tranquilo the towns get smaller, the distances between them get longer, and the landscape escalates into something that can feel, at moments, overwhelming.
The Baker River
The Río Baker is a color that seems physically impossible. Somewhere between turquoise and teal, so vivid that first-time visitors describe looking through the trees and thinking they’re seeing a painted wall. The highway follows the Baker for long stretches south of Puerto Bertrand, where the river is born from the outflow of Lago Bertrand. Puerto Bertrand is a fly fishing mecca: rainbow and brown trout, calm water, and a setting that justifies every superlative.
Twelve kilometers north of the entrance to Patagonia National Park, a small parking area marks the trailhead to the Baker-Nef confluence. A ten-minute walk through the forest brings you to one of the most extraordinary natural sights on the highway: the turquoise Baker crashes over a small waterfall and slams into the milky grey glacial water of the Río Nef, which arrives loaded with sediment from the Northern Patagonian Ice Field. The two colors swirl and resist mixing for dozens of meters downstream. It is free, it takes fifteen minutes, and almost nobody stops.
Patagonia National Park
The entrance to Patagonia National Park sits at the junction where the Baker and Chacabuco rivers meet, visible from a turnout on the highway. The park encompasses the former Estancia Valle Chacabuco, a 69,000-hectare sheep ranch purchased by Kristine Tompkins and the Tompkins Conservation Foundation in 2004. Over 15 years, the team removed 500 kilometers of livestock fencing, reintroduced native grasslands, and watched as guanacos, pumas, foxes, and huemul gradually returned to a landscape that had been grazed bare. The recovery is visible and ongoing. Guanacos now number in the hundreds in the valley, and puma sightings are increasingly common.
The park offers day hikes and multi-day trails ranging from easy valley walks to serious backcountry routes.
Reserva Nacional Tamango
Just outside Cochrane, Reserva Nacional Tamango is one of the most overlooked protected areas on the Carretera Austral. Day hikes along Lago Cochrane wind through lenga forest and open grassland, and the reserve is considered one of the single best places in Chile to see huemul in the wild.
Caleta Tortel
A gravel spur off the Carretera Austral drops you into one of the strangest and most beautiful towns in South America. Caleta Tortel has no streets—the entire village is connected by roughly six kilometers of elevated wooden boardwalks built from local Guaitecas cypress that wind between houses, jetties, and public spaces perched on the steep, forested slopes above a fjord. The town was founded in 1955 as a cypress logging outpost. Its settlers came from Chiloé Island, bringing with them the stilt-house building traditions that define the village’s look. Caleta Tortel was not connected to the Carretera Austral by road until 2003. Before that, the only way in was by sea or by air.
From Tortel, boat trips reach the Jorge Montt Glacier (Southern Patagonian Ice Field) and the Steffen Glacier (Northern Ice Field, within Laguna San Rafael National Park). For travelers who want big ice without Torres del Paine, this is one of the most accessible and least crowded options in Patagonia.
But the most compelling boat trip from Tortel may be the shortest. Isla de los Muertos, the Island of the Dead, sits 30 minutes offshore. In 1905 or 1906, approximately 120 workers from Chiloé were brought here by the Baker Exploitation Society to log cypress and clear a route to Argentina. Their supply ship never returned. Stranded through a Patagonian winter with no provisions, most of them died. The cause has never been fully explained. Thirty-three cypress crosses remain standing among the trees. The island is a National Historical Monument and one of the darkest, most haunting stories on the entire highway.
The Final Stretch: Villa O’Higgins
Villa O’Higgins (population roughly 600) is the end of the road. There is a gas station, a handful of guesthouses, and Lago O’Higgins, the deepest lake in the Americas and the fifth deepest in the world. The village sits at the edge of the Southern Patagonian Ice Field, the largest mass in the Southern Hemisphere outside Antarctica.
For travelers heading south to Argentine Patagonia, the Villa O’Higgins to El Chaltén crossing is one of the great overland border adventures in South America. A ferry across Lago O’Higgins, a hike to the border post, an entry into Argentina, and then a boat across Lago del Desierto delivers you to El Chaltén and the foot of Mount Fitz Roy. The crossing takes one to two days depending on ferry schedules and weather.
When to Go and How Long You Need
December through March is the season. February is statistically the driest month and the warmest, though “warm” on the Carretera Austral means highs in the mid-teens Celsius with a real chance of rain, wind, and near-freezing temperatures on any given afternoon. Four seasons in one day is not a figure of speech here. Pack layers for everything from warm sun to horizontal sleet.
January and February are peak season, which on the Carretera Austral means you’ll actually see other vehicles and may need to book ferries and lodging in advance. By Patagonian standards, it’s busy. By any other standard, it’s deserted.
November and late March are the shoulder months. Fewer people, lower prices, more rain, and shorter days. Some services (boat tours, remote lodges, certain ferries) may not operate outside December through March.
As for duration: two weeks is the minimum to drive the full route without it feeling like a highway rally. Three weeks is better. If you’re flying into Balmaceda (the airport serving Coyhaique), you can work both directions from the middle, heading north to Puyuhuapi and south to Villa O’Higgins on separate legs. This is logistically efficient but means missing the ferry experience and the rainforest-first sequence that gives the road its narrative arc.
The Bottom Line
The Carretera Austral is a road that does something almost no other drive in the world can do anymore: it makes you feel the actual size of the landscape you’re moving through. Not the curated, pull-over-at-the-viewpoint version. The version where you drive for three hours without seeing another car, where a river the color of liquid turquoise appears through the trees like a hallucination, where you arrive in a village built entirely on wooden boardwalks because nobody thought to build roads and it didn’t matter because nobody could get here anyway.
The Carretera Austral asks you to slow down, plan ahead, carry cash, accept uncertainty, and pay attention. In exchange, it gives you Patagonia the way it existed before the rest of the world showed up. That exchange is still available. EcoVoyager builds custom itineraries for the Carretera Austral with experienced local drivers and guides who know where to stop, where to fill up, and which unmarked trailhead leads to a waterfall that isn’t in any guidebook.
The road is there. The question is whether you are.