In short
- Spend time in San Pedro de Casta (3,180m) to acclimatize.
- Take the long trail for a gradual ascent.
- Drink water, chew coca leaves, or use altitude medication.
In this article
Altitude sickness can affect anyone traveling quickly from Lima to the Andes. Proper acclimatization in the base town and pacing yourself on the trails will help you avoid symptoms like headaches and nausea.
What causes altitude sickness at Marcahuasi?
The rapid climb from sea-level Lima to the 4,000-meter plateau triggers symptoms due to lower oxygen levels.
San Pedro de Casta sits at 3,180 meters. Ascending an additional 820 meters in two to four hours stresses your body. Symptoms often include headaches, nausea, and shortness of breath.
Does sleeping in San Pedro de Casta help?
Yes, resting in the base town at 3,180 meters allows your body to adjust to the thinner air.
The town provides community lodgings and basic meals. Spending a few hours eating local trout or staying overnight lets you acclimate before tackling the steep climb to the plateau.
Which trail is better for avoiding altitude sickness?
The 'Long Trail' (Amphitheater route) is much better for acclimatization.
The long trail takes three to four hours and features a gradual incline. The 'Short Trail' takes about two hours but is extremely steep. This rapid climb increases your risk of altitude sickness.
Do coca leaves really help at 4,000 meters?
Chewing coca leaves is a proven traditional method to reduce altitude sickness symptoms.
You can buy coca leaves in San Pedro de Casta before you hike. Locals chew the leaves or brew them into tea to alleviate headaches and improve energy.
What medication should I pack for the hike?
Pack altitude sickness medication and basic first aid supplies.
Consult your doctor before your trip for specific prescription options. Bring sufficient drinking water to stay hydrated. High-calorie snacks also help maintain energy levels during the climb.
Can I rent a horse if I feel sick?
Yes, you can hire a horse in San Pedro de Casta to carry your gear.
Renting a horse costs approximately 15 to 20 Soles for equipment transport. Lightening your load helps you conserve oxygen and energy during the strenuous 820-meter ascent.
Questions travellers ask
How high is Marcahuasi?
Marcahuasi sits at an elevation of approximately 4,000 meters (13,100 feet) above sea level.
Can I prevent altitude sickness by drinking water?
Yes, drinking sufficient water is a primary defense against altitude sickness. You must pair hydration with slow acclimatization.
Are there medical facilities on the plateau?
No. Hikers must pack their own basic first aid and altitude medication, as there are no facilities at 4,000 meters.
