Expedition Dates and Acclimatization Schedule

Expedition Dates

concagua takes significant time to ascend because proper acclimatization is essential to maximize summit chances. Three weeks with the "capping" end weekends are reserved - a total of 23 days from and to the United States. Unless you are pre-acclimatized, it is illogical to earmark any time LESS than three weeks for an Aconcagua expedition, as the end result is most likely failure to summit, or worse, the development of severe high altitude medical problems.
Andes with Aconcagua
View north while flying to Mendoza over the Andes.
Aconcagua is an immense mass on the north horizon.

Tupungato is the closer summit immediately to
Aconcagua's left and thirty miles to its south-southeast.

A mid-season itinerary is selected to accomodate work and personal time constraints. The adventure begins with a four-way convergence of all team members at Los Angeles, California on Saturday January 14, 2006. We fly overnight to Santiago, Chile - and then to Mendoza, Argentina the same Sunday morning.

Our acclimatization schedule begins after two days of travel when we arrive by van at Puente del Inca mid-afternoon on Monday the 16th. In the next section, this timepoint is defined as "Day 0.0" of an "acclimatization clock" - one which ticks through summit day as Day 12.0 - Saturday, January 28.

Our return flights from Santiago to the United States are on the evenings of Saturday February 4 and Sunday the 5th. Edward and John wish to return stateside on Sunday, via the Saturday night flight, because the Sunday night flight would see them miss work on Monday morning.

This itinerary provides a full, five-day summit window as Days 12-16 (January 28 to February 1); followed by one day for descent to Base Camp (Day 17 = February 2); and a day for hiking to the Puente del Inca roadhead (Day 18 = February 3).

Planning with Precision - Recommended Acclimatization Schedule

concagua is notorious for summit failures because its extreme altitude is not properly accounted for in the climbing itinerary. Indeed, only some 30% of climbers attain the summit. The Ruta Normal ("normal route") contains no technical climbing issues, and is thus mistakenly considered a "walk-up" by many otherwise experienced alpinists. Hence the tendency is to forsake an adequate acclimatizing schedule in favor of racing up the mountain - with obvious (and sometimes fatal) consequences.

Given the considerable financial and temporal costs of a South American vacation, it makes no sense, logically, to invite failure for want of a few extra days of acclimatizing. Therefore it is a given, throughout the planning phases, that we shall not attempt a summit bid until at least eleven or twelve days after arriving at a sufficient altitude to begin acclimatizing.

Adam at Lower Condores
Adam poses at the Lower Condores camp,
with a view to the west and numerous
16,000 to 18,000 foot peaks.

The twelve day figure is based upon study of successful private expedition timetables; as well as the published itineraries of commercial expeditions via the Ruta Normal.

Puente del Inca lies at some 9,000 feet elevation (2,700 meters), an altitude sufficiently high that effective acclimatization is possible. We thus DEFINE our mid-afternoon arrival there as Day 0.0.

The following climbing itinerary then derives.

Our return flights to the United States are timed to allow for the theoretically maximum duration expedition of eighteen days. The Aconcagua Provincial Park climbing permit allows for up to twenty days of activity within the park boundaries.

The ACTUAL itinerary, as realized on Aconcagua, differs from the above beginning with the tenth day.

We spend the extra time at Scott's Place - an excellent hostel in Santiago, Chile where one meets backpackers from around the globe in a friendly atmosphere conducive to conversation and story-telling. Scott's Place is described more fully in a later section.

Climbers differ greatly in how long they require to acclimatize. A twelve day itinerary may be adequate based on your physiology. However twelve days may be insufficient. Your previous high altitude experience is the best indicator of how long one should plan upon acclimatizing on Aconcagua prior to any summit attempt.

The cost of misjudging the acclimatization time requirement is high - acute mountain sickness (AMS) and/or a revisit to South America at great cost. Although unlikely, one might even contract a life-threatening altitude-induced illness such as HACE or HAPE (High Altitude Cerebral or Pulmonary Edema).

The best philosophy is to


south face
The south face of Aconcagua as seen on Day 1
during the approach hike. The slightly higher,
eastern summit is at the viewer's right.

previous page - Introduction next page - Expedition Members