How to Acclimatise Properly Before Trekking in Cusco

Planning to trek in the Peruvian Andes? Whether you’re hiking the Inca Trail, Salkantay Trek, Ausangate, Choquequirao, Rainbow Mountain, or Humantay Lake, taking time to acclimatize before your adventure can make all the difference.

Cusco sits at 3,400 metres (11,150 feet) above sea level. At this altitude, there is less oxygen available, meaning your body needs time to adjust. Even experienced hikers and athletes can experience the effects of altitude if they ascend too quickly.

The good news is that with a little preparation, you can significantly improve your chances of enjoying your trek from start to finish.

Why Acclimatization Matters

Altitude affects everyone differently. Being young, fit, or experienced in hiking doesn’t make you immune.

Common symptoms include:

• Headache

• Fatigue

• Shortness of breath

• Poor sleep

• Loss of appetite

• Mild dizziness

These symptoms are usually temporary, but they can make the first days of your trip much less enjoyable if you don’t give your body time to adapt.

How Long Should You Spend in Cusco Before Trekking?

We recommend spending at least two full days in Cusco before beginning any demanding trek.

Three days is even better, especially if you’re planning:

• The Inca Trail

• Salkantay Trek

• Ausangate Trek

• Choquequirao Trek

• Multi-day adventures above 4,000 metres

This allows your body to gradually adapt to the altitude before facing longer hiking days.

Your First 48 Hours

Day 1: Take It Easy

After arriving in Cusco:

• Walk at a relaxed pace.

• Stay well hydrated.

• Avoid alcohol.

• Eat light meals.

• Get plenty of rest.

• Don’t plan any strenuous activities.

Many visitors feel fine when they land but notice symptoms later in the evening or the following morning.

Day 2: Gentle Exploration

If you’re feeling well, begin introducing light activity.

Good options include:

• Exploring the San Blas neighbourhood.

• Visiting the Plaza de Armas.

• Walking to nearby archaeological sites.

• Enjoying a gentle half-day excursion.

Avoid challenging hikes or long climbs until you’ve adjusted.

Stay Hydrated

The mountain air in Cusco is dry, and you’ll naturally lose more fluids than usual.

Aim to:

• Drink water consistently throughout the day.

• Consider electrolyte drinks if you’re active.

• Limit alcohol during your first couple of days.

Hydration won’t prevent altitude sickness, but dehydration can make symptoms worse.

Eat Foods That Give You Energy

Many visitors lose their appetite during the first day or two.

Choose meals that are:

• Rich in carbohydrates

• Easy to digest

• Fresh and nutritious

Smaller, more frequent meals are often more comfortable than large portions.

Listen to Your Body

Everyone acclimatizes at a different rate.

If you’re feeling unusually tired, dizzy, or short of breath, slow down and give yourself more time. There’s no prize for rushing into the mountains before your body is ready.

Recovery Before Your Trek

Preparing for a multi-day trek isn’t just about fitness—it’s also about arriving at the trailhead feeling rested and refreshed.

Many travellers choose to enjoy a massage before their trek to ease stiffness from long flights and travel. Others use oxygen therapy or float therapy as part of their recovery routine, helping them relax before several demanding days in the mountains.

Starting your trek feeling recovered can make the experience far more enjoyable.

Common Mistakes to Avoid

Many trekkers make these avoidable mistakes:

• Starting a trek the day after arriving.

• Drinking alcohol on the first night.

• Not drinking enough water.

• Trying to “push through” altitude symptoms.

• Overexerting themselves during their first days in Cusco.

Giving your body just a little extra time to adapt can dramatically improve your trekking experience.

Final Thoughts

The mountains around Cusco are among the most spectacular in the world. Whether you’re walking ancient Inca trails, crossing high mountain passes, or visiting remote Andean communities, you’ll enjoy every moment much more if your body has had time to acclimatize.

Arrive early, take things slowly, stay hydrated, and allow yourself to adjust before setting off. Your body—and your adventure—will thank you.

At ReEnergize Cusco, we help travellers prepare for their adventures with massage therapy, float therapy, oxygen therapy, and expert local knowledge so they can explore the Andes feeling their best.