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Hiking Trails: Ruta 40 (Patagonia Section)

Embark on an unforgettable hiking adventure along the legendary Ruta 40 in the Patagonian section of Santa Cruz, Argentina. This vast and wild landscape offers dramatic glaciers, towering granite peaks, and vast steppe, providing a diverse range of trails from gentle strolls to challenging multi-day treks. Prepare to be awed by some of the most spectacular natural beauty on Earth.

Updated for 2025–2026 Season8 min read
3 trailsBest Season: The austral summer (November to April) offers the most favorable weather conditions, with longer daylight hours and generally milder temperatures, though strong winds and rain are always possible.
Full guide to Ruta 40 (Patagonia Section) →

Overview

The Patagonian section of Ruta 40 serves as a gateway to world-renowned hiking destinations, primarily centered around El Chaltén and the Los Glaciares National Park. Hikers can explore trails leading to iconic peaks like Fitz Roy and Cerro Torre, witness massive glaciers, and discover unique Patagonian flora and fauna. The hiking scene here caters to all levels, from families seeking easy walks to seasoned mountaineers tackling technical ascents, all against a backdrop of breathtaking, untamed wilderness. A rental car is highly recommended for accessing many trailheads and exploring the region efficiently.

The Patagonian section of Ruta 40, particularly around El Chaltén, offers a wide range of hiking difficulties. You'll find easy, family-friendly walks to viewpoints, moderate day hikes to glacial lakes, and expert-level multi-day treks that require significant experience, navigation skills, and specialized gear. Prepare for varied terrain, from well-maintained paths to rocky, steep ascents and river crossings.

Trails

Laguna de los Tres (Fitz Roy)

hardout-and-back

Distance

25 km

Elevation Gain

+1000m

Duration

8-10 hours

Type

out-and-back

This iconic trek leads to the stunning Laguna de los Tres, offering unparalleled views of Mount Fitz Roy and its surrounding spires. It's a challenging but highly rewarding hike, culminating in a steep final ascent to the lake's viewpoint. Prepare for dramatic weather changes and strong Patagonian winds.

Highlights

Panoramic views of Mount Fitz RoyLaguna de los Tres and Laguna SuciaGlacial streams and waterfallsLenga forest scenery

Waypoints

1

Mirador Río de las Vueltas

1.5 km from start · +50m · 30 min

First viewpoint offering a glimpse of the valley and mountains.

2

Campamento Poincenot

8 km from start · +300m · 3 hours

Designated campsite, popular stop before the final ascent. Offers toilets and water access.

3

Piedra Blanca Glacial Stream

9.5 km from start · +400m · 3h 45min

Crossing a beautiful stream fed by the Piedra Blanca Glacier.

4

Laguna de los Tres Summit

12.5 km from start · +1000m · 5 hours

The breathtaking final destination, offering a magnificent close-up view of Fitz Roy, Poincenot, and Saint-Exupery peaks, with Laguna Sucia below.

Gear Recommendations:
  • • Layered clothing (waterproof and windproof outer shells)
  • • Sturdy hiking boots with good ankle support
  • • Trekking poles
  • • Plenty of water and high-energy snacks
  • • Sunscreen, sunglasses, and hat
  • • GPS device or map and compass

Permit Required: No

Trailhead Access: The trailhead is located at the northern end of El Chaltén, easily accessible by walking from town or a short drive. A rental car provides flexibility to reach El Chaltén from El Calafate via Ruta 40, a journey of approximately 3 hours.

Water Availability: Water can be filtered from glacial streams along the way, especially near campsites. Always treat water before drinking.

Camping Options: Free, designated campsites are available at Campamento Poincenot and Campamento Río Blanco. No reservations are needed, but space is first-come, first-served.

Best Months: October, November, December, January, February, March, April

Laguna Torre (Cerro Torre)

moderateout-and-back

Distance

18 km

Elevation Gain

+600m

Duration

6-8 hours

Type

out-and-back

This scenic trail leads to Laguna Torre, a glacial lake at the base of the majestic Cerro Torre, Egger, and Standhardt peaks. It's a less strenuous alternative to Laguna de los Tres but still offers incredible Patagonian views, including the Adela Glacier and floating icebergs.

Highlights

Iconic views of Cerro TorreAdela Glacier and floating icebergsPanoramic viewpoints along the Fitz Roy River valleyDiverse Patagonian forest

Waypoints

1

Mirador Cascada Margarita

2 km from start · +100m · 45 min

A picturesque waterfall and early viewpoint overlooking the Fitz Roy River.

2

Mirador Cerro Torre

4 km from start · +200m · 1h 30min

The first clear view of Cerro Torre, Egger, and the valley ahead.

3

Campamento Agostini

7.5 km from start · +400m · 3 hours

Designated campsite near the river, a popular overnight stop for those extending their hike.

4

Laguna Torre

9 km from start · +450m · 3h 45min

The stunning glacial lake with icebergs, offering close-up views of Cerro Torre and the Adela Glacier.

Gear Recommendations:
  • • Waterproof hiking shoes or boots
  • • Layered clothing, including a warm mid-layer and wind/rain shell
  • • Day pack with snacks and water
  • • Camera for incredible photo opportunities
  • • Trekking poles (optional, helpful for descent)

Permit Required: No

Trailhead Access: The trailhead is located at the western end of El Chaltén, accessible by foot from town. El Chaltén is reached via Ruta 40 from El Calafate. A rental car allows for easy travel to El Chaltén and flexibility for other activities.

Water Availability: Numerous streams are available for filtering water. Remember to bring a water filter or purification tablets.

Camping Options: Free, designated campsite at Campamento Agostini, just before reaching Laguna Torre.

Best Months: October, November, December, January, February, March, April

Glaciar Huemul Trek

expertcircuitPermit Required

Distance

12 km (to Mirador & back, but often done as part of 2-day circuit)

Elevation Gain

+700m

Duration

1-2 days (to Mirador 4-6 hours, full circuit 2 days)

Type

circuit

The Glaciar Huemul Trek is a challenging multi-day circuit that offers breathtaking views of the Southern Patagonian Ice Field, including the impressive Huemul Glacier. This trek involves river crossings, steep ascents, and requires good navigation skills and appropriate gear. It's a true wilderness experience.

Highlights

Views of the Southern Patagonian Ice FieldHuemul Glacier and its lagoonForests of Lenga and Ñire treesSolitude and wilderness experience

Waypoints

1

Start of Trail / Ranger Station

0 km from start · +0m · 0 min

Initial registration point where permits are checked and safety briefings might occur. The first river crossing is shortly after.

2

First River Crossing (Huemul River)

0.5 km from start · +10m · 15 min

The initial major challenge, often requiring careful wading or use of a zip-line if available.

3

Mirador Huemul Glacier

4 km from start · +350m · 2 hours

A stunning viewpoint offering a first panoramic view of the Huemul Glacier and its lagoon.

4

Huemul Pass

6 km from start · +700m · 3 hours

The highest point of the circuit, providing incredible views across the Southern Patagonian Ice Field.

Gear Recommendations:
  • • Full backpacking gear, including tent, sleeping bag, and cooking equipment
  • • Waterproof and windproof clothing (heavy duty)
  • • Sturdy waterproof hiking boots (possibly waders for river crossings)
  • • Trekking poles are essential
  • • GPS device, map, and compass (navigation skills are crucial)
  • • River crossing specific gear (e.g., strong rope, carabiners for zip-line if used)

Permit Required: Yes — A permit is required for the full Huemul Circuit and must be obtained in advance from the Los Glaciares National Park Information Center in El Chaltén. Hikers must register and demonstrate they have appropriate gear and experience for the challenging conditions, especially river crossings and glacier views.

Trailhead Access: The trailhead is located approximately 17 km north of El Chaltén, along the dirt road to Lago del Desierto. It requires driving, and the road can be rough in sections, making a rental car with good clearance highly recommended. From El Chaltén, this access point is further north of the Ruta 40 turn-off.

Water Availability: Abundant water from glacial streams, but always filter or treat water before consumption. No treated water sources.

Camping Options: Wild camping is permitted at designated areas along the circuit (e.g., Bahía Cabo de Hornos). Follow Leave No Trace principles strictly.

Best Months: November, December, January, February, March

Drive to the Trailhead

Browse Car Rentals

Safety Tips

  • 1Always check weather forecasts before heading out; Patagonian weather can change rapidly and dramatically.
  • 2Layer your clothing, including waterproof and windproof outer layers, even on sunny days.
  • 3Carry sufficient water, snacks, and emergency supplies (first-aid kit, headlamp).
  • 4Inform someone of your hiking plans and estimated return time.
  • 5Stay on marked trails to protect the fragile ecosystem and for your own safety.
  • 6Be aware of strong winds, especially in exposed areas; trekking poles can help maintain balance.
  • 7If planning a remote or multi-day trek, register with the National Park office and carry appropriate navigation tools (map, compass, GPS).

Emergency Contacts

Rescue Service

103 (Emergency Services)

Park Rangers

+54 2962 493004 (El Chaltén National Park Office)

Nearest Hospital

Hospital SAMIC El Calafate (+54 2902 491000)

Before you hit the trail: Ruta 40 (Patagonia Section)

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Frequently Asked Questions

Is a car rental necessary for hiking along Ruta 40?

While some trailheads in El Chaltén are accessible by foot from town, a rental car is highly recommended. It provides invaluable flexibility to reach more remote trailheads, explore the wider region (like driving from El Calafate to El Chaltén on Ruta 40), and visit various attractions at your own pace. Road conditions vary, so consider a vehicle with good clearance if planning to explore off main routes.

What is the best time of year to hike in Patagonia?

The prime hiking season is during the austral summer, from November to April. December to February are the warmest months with the longest daylight, but also the busiest. Shoulder seasons (November, March, April) can offer fewer crowds and beautiful autumn colors, though weather can be more unpredictable.

Do I need a permit for all trails?

Most day hikes in Los Glaciares National Park around El Chaltén do not require a permit. However, certain multi-day treks, particularly more challenging or remote routes like the Huemul Glacier Trek, do require registration and a permit from the National Park office. Always check current regulations before embarking on any trek.

What kind of wildlife can I expect to see?

Patagonia is home to a diverse array of wildlife. Keep an eye out for guanacos, condors soaring overhead, various bird species, and if you're lucky, perhaps even a fox or armadillo. The elusive huemul deer can be found in certain protected areas, especially around the Huemul Glacier trek.

Are there guided tours available?

Yes, numerous tour operators in El Chaltén and El Calafate offer guided hiking tours for various trails and difficulty levels, from easy day walks to multi-day trekking and climbing expeditions. Guides can enhance safety, provide local insights, and handle logistics.

What should I do about water on the trails?

Many trails have abundant streams fed by glaciers, making water generally accessible. However, it is crucial to always filter or treat stream water before drinking to prevent illness. Always carry enough water to start your hike and have a purification method handy.

Ruta 40 (Patagonia Section)

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