Imagine standing in front of a wall of blue ice taller than a 20-story building. It creaks, it groans, and every few minutes, a thunderous crash echoes as a massive chunk breaks off into the turquoise lake below. Tucked deep inside Los Glaciares National Park, Perito Moreno is a colossal glacier that stretches over 30 kilometers long and rises more than 70 meters above the shimmering surface of Lago Argentino.

If the regular viewing platforms make your jaw drop, the El Calafate Big Ice trek will absolutely blow your mind. It’s a once-in-a-lifetime expedition that takes you deep into the heart of the glacier. The Perito Moreno Big Ice experience lasts around 8 to 9 hours, with roughly 3.5 hours spent trekking directly on the glacier. It’s immersive, adventurous, and dare we say, “life-changing”.

What to expect on your Perito Moreno Glacier Big Ice trek

Couple boarding a bus for a city tour.
Cruise ship in front of Perito Moreno Glacier, Argentina, with tourists on deck.
Perito Moreno Glacier in Argentina with surrounding mountains and autumn trees.
Guide assisting tourist with snow boots on Perito Moreno Glacier hike.
Tourists with guide hiking on Perito Moreno Glacier, Argentina.
Tourists with guide toasting drinks atop Perito Moreno Glacier, Argentina.
Tourists with guide hiking near Perito Moreno Glacier, Argentina.
Visitor observing Perito Moreno Glacier from viewing deck in Argentina.
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Early Start from El Calafate (transfers optional)

Your Perito Moreno Big Ice trek begins bright and early with hotel transfers from El Calafate (only if ticket selected). You can also drive yourself to the Puerto Bajo de las Sombras dock inside Los Glaciares National Park. The 80-kilometer journey is a treat in itself, with golden Patagonian steppe stretching endlessly.

Crossing Lago Argentino by boat

Upon arrival, you’ll meet your certified mountain guides, and they’ll handle your registration. You’ll board a small boat and sail across the Brazo Rico arm of Lago Argentino, an unforgettable 20-minute ride that gives you a front-row seat to the glacier’s immensity. Cameras come out, but most travelers eventually lower them. It’s too breathtaking to see through a lens.

Trekking through the Patagonian Forest

Before setting foot on the ice, the Big Ice Perito Moreno trekking tour begins with a two-hour hike through the lush forest. This part of the Perito Moreno Glacier trail winds between ancient lenga and ñire trees, and through the trees, you catch teasing glimpses of the glacier’s blinding white surface ahead.

Gearing up for the ice

At the edge of the glacier, you’ll reach a small mountain refuge. Here, you can leave your backpack, use the restroom, and grab a quick bite. It’s recommended to bring your own packed lunch from El Calafate. Your guides will then outfit you with crampons, harnesses, and safety gear, followed by a detailed briefing. They’ll show you how to walk safely on uneven ice, maintain balance, and essential skills for what’s to come.

A journey into the ice

Now comes the heart of the Perito Moreno Big Ice experience, a 3 to 3.5-hour trek deep into the glacier’s interior. Unlike shorter tours that stay near the surface, the Big Ice trek ventures into areas few ever see: turquoise lagoons, vertical ice walls, deep crevasses, and crystal-clear sinkholes that plunge into the glacier’s depths. It’s physically demanding. You’ll feel your legs burn and your lungs fill with the cleanest air you’ve ever breathed.

Lunch on the glacier

Midway through the trek, your group will stop to rest and refuel. You’ll sit on the glacier itself, a surreal picnic spot surrounded by endless shades of blue and white.

The return journey

After hours of exploration, you’ll retrace your steps to the moraine, remove your crampons, and hike another two hours back through the forest. Once back at the dock, you’ll board the boat again for your return across the lake, this time, sailing right past the southern wall of the glacier.

Hold on! There’s more (only with the transfers option)

Before heading back to El Calafate, your guides will take you to the Perito Moreno Glacier walkways, a series of panoramic platforms offering breathtaking views of the ice field from above. From this vantage point, you’ll truly grasp the enormity of what you’ve just conquered. The perfect ending to your Big Ice Perito Moreno trekking tour.

Big Ice vs. Minitrekking: What's the difference?

FeatureBig Ice trekMinitrekking

Duration

8–9 hours total (3.5 hours on ice)

5 hours total (1.5 hours on ice)

Difficulty

Moderate to high

Easy to moderate

Age limit

18 to 50 years old

10 to 65 years old

Glacier access

Deep into the glacier

Edge of the glacier

Plan your visit

Visitor hiking with guide on Perito Moreno Glacier, Patagonia, Argentina.

The Big Ice Perito Moreno trekking tour runs from September through April (Patagonia’s warmer months).

  • November to February: Peak season; long days, stunning light, but busier.
  • March to April: Cooler weather, fewer crowds, and spectacular autumn colors.
  • September to October: Crisp, peaceful, and perfect for photographers.
Your quick guide to Perito Moreno Glacier opening hours
Tourists hiking with a guide on Perito Moreno Glacier, Argentina.

Forget fancy gear. What matters for the Perito Moreno Big Ice hike is comfort and warmth.

Essentials for the Perito Moreno Big Ice:

  • Thermal base layers and fleece jackets
  • Waterproof outer shell (wind is strong)
  • Trekking boots (no sneakers allowed)
  • Gloves, sunglasses, and sunscreen
  • A refillable water bottle and snacks
  • A camera or GoPro (trust us, you’ll want proof)

The tour operator will provide all the glacier gear (crampons, helmets, harnesses).

Nurse writing follow-up information on medical report in hospital.

Age restriction: Participants must be between 18 and 50 years old.

Medical form: To confirm your reservation, it’s mandatory to submit a medical form for each passenger.

Who should not participate:

  • Have a physical or mental disability that limits mobility, balance, or coordination
  • Are affected by obesity (BMI over the recommended limit for strenuous activity)
  • Are pregnant at any stage
  • Suffer from severe vertigo or dizziness
  • Have cardiovascular disease or reduced cardiac or vascular capacity
  • Use stents, bypasses, pacemakers, or other similar cardiovascular prostheses
  • Suffer from chronic respiratory diseases such as COPD, emphysema, or asthma
  • Have undergone recent surgery or are currently under anticoagulant medication
  • Have grade III varicose veins (multiple or very thick)

Frequently asked questions about the Perito Moreno Glacier Big Ice trek

Is the Big Ice trek suitable for beginners?

Yes, as long as you’re reasonably fit and enjoy hiking. The guides make it accessible for adventurous first-timers.

What’s the age limit for the trek?

Participants must be 18 to 50 years old. This ensures everyone can handle the physical challenge safely.

How far do you walk on the Perito Moreno Glacier trail?

You’ll spend around 3.5 hours on the ice, covering several kilometers of breathtaking terrain.

Can I do the Big Ice trek in winter?

No, it’s only offered from September to April due to weather and safety conditions.

What if the weather turns bad?

Tours run in most conditions, but high winds or storms can lead to rescheduling for safety reasons.

Is the El Calafate Big Ice hike worth it compared to other treks?

Absolutely. The Perito Moreno Big Ice experience takes you deep inside the glacier. It’s more intense, remote, and rewarding.

How long should I plan to spend at Perito Moreno Glacier?

Allow 3–4 hours to explore all circuits at a comfortable pace. If you’re planning a boat tour or mini-trek, budget a half day or more.

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