How to Train for Huayhuash Circuit

What the Huayhuash Circuit asks of your body

The full circuit runs roughly 120 to 130 km, usually over 8 to 14 days depending on the variant. Published cumulative gain varies by itinerary, from about 5,350 m (17,545 ft) over 10 days to about 5,900 m (19,357 ft) over 8, with average daily gain and loss above 1,000 m. It crosses four passes above 4,270 m (14,000 ft), three above 4,570 m (15,000 ft), and reaches close to 5,000 m. Footing ranges from boggy flats to loose scree and moraine.

Start with a weekly base

Start from the CDC adult guidance: 150 minutes of moderate-intensity activity a week, or 75 minutes of vigorous activity, or an equivalent mix. It does not have to be done all at once, so you can split it across the week. For a trip this demanding, treat that figure as your minimum starting point rather than your goal, and build up from it with hills and loaded walks. If you have any health concerns, ask a doctor before you ramp up.

The training plan, phase by phase

1. 1

   Aerobic base · Weeks 1 to 4

   Walk most days and let the weekly total climb steadily toward the CDC baseline and beyond. Keep the pace conversational. Nothing fancy is needed here: the goal is simply to make long hours on your feet feel normal before you add any extra challenge.

2. 2

   Hills and stairs · Weeks 3 to 6

   Add one weekly hill or stair session, since this route is a rhythm of climbs out of camp and descents into the next valley. Extend the session a little each week. Include slow step-downs, because stairs replicate downhill poorly and long descents load the quads.

3. 3

   Loaded pack walks · Weeks 5 to 10

   Walk with a loaded pack, starting light, often around 10 pounds, and add weight in small steps. Hikers here typically carry only a daypack because pack animals move the heavy gear, so match your loading to that reality, keeping well under the roughly 20% of body weight ceiling.

4. 4

   Rehearsal and taper · Weeks 9 to 12

   A couple of weeks out, do two loaded walks on consecutive days to rehearse the multi-day rhythm. Then taper over the last 1 to 2 weeks, cutting volume so you arrive rested. Allow roughly 8 to 12 weeks in total for a trip of this length.

Strength work that helps on the trail

Do muscle-strengthening work on at least 2 days each week, covering all the major muscle groups, as the CDC advises. For this route, put the emphasis on legs, hips and core, which carry you up the switchbacks and steady you on loose scree. Add slow step-downs to prepare your quads for the long descents, since downhill effort causes delayed soreness that can linger into the next day's climb.

Pack walks and back-to-back days

Begin with a light pack and add weight in small steps, never exceeding about 20% of body weight. Because each day is built around one pass, aim your longer loaded walks at sustained climbing, and finish with the back-to-back rehearsal: two loaded walks on consecutive days. This mimics waking up tired and still facing another climb, which is the real test on a circuit with so little level walking.

Altitude: why a slow ascent matters

Training fitness does not replace a slow ascent. Avoid going from low elevation to a sleeping altitude of 2,750 m (9,000 ft) or more in a single day. Above 3,000 m (9,800 ft), limit gains in sleeping altitude to 500 m (about 1,600 ft) per night, and add an extra acclimatization night for every 1,000 m gained. Spending 2 to 3 nights at roughly 2,450 to 2,750 m (8,000 to 9,000 ft) beforehand is protective against acute mountain sickness. Sleeping altitude matters most because low oxygen is worst during sleep.

More in our guide to hiking at altitude and acclimatization.

Training mistakes to avoid

Common errors include never walking with a loaded pack, skipping downhill work, and starting too late to build a base. On this route there is another one: treating fitness as a substitute for acclimatization. Because the circuit rarely drops to low ground, there is no built-in relief from altitude, so allow time to adjust rather than relying on strong legs alone. Also avoid cramming training into the final fortnight, when the taper should begin.

Common questions