{"id":37575,"date":"2026-07-27T22:01:00","date_gmt":"2026-07-27T19:01:00","guid":{"rendered":"https:\/\/mountainguides.pro\/?p=37575"},"modified":"2026-09-10T16:13:38","modified_gmt":"2026-09-10T13:13:38","slug":"acclimatisation-on-ojos-del-salado","status":"publish","type":"post","link":"https:\/\/mountainguides.pro\/de\/2026\/07\/27\/acclimatisation-on-ojos-del-salado\/","title":{"rendered":"Acclimatisation on Ojos del Salado"},"content":{"rendered":"<p>Acclimatisation is the heart of climbing Ojos del Salado. The defining feature of the route is that a four-wheel drive can quickly deliver a group to an altitude the body is not yet ready for. Being able to drive higher does not mean being able to sleep there safely, or to start a summit attempt from there.<\/p>\n<h2>How height is gained on the 15-day programme<\/h2>\n<p>The Mountain Guide route starts in Copiapo and works through Laguna Santa Rosa, Laguna Verde, San Francisco and the Atacama and Tejos camps. The programme includes day walks, a rest day and two reserve days. Each stage only makes sense in relation to the one before it.<\/p>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Point<\/th>\n<th>Altitude in the programme<\/th>\n<th>Its role<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Laguna Santa Rosa<\/td>\n<td>3700 m<\/td>\n<td>First night and an easy acclimatisation walk<\/td>\n<\/tr>\n<tr>\n<td>&#8222;Seven Brothers&#8220;<\/td>\n<td>4800 m<\/td>\n<td>Day height gain with a return to lower ground<\/td>\n<\/tr>\n<tr>\n<td>Laguna Verde<\/td>\n<td>4250 m<\/td>\n<td>The next sleeping step, and recovery<\/td>\n<\/tr>\n<tr>\n<td>San Francisco<\/td>\n<td>6018 m<\/td>\n<td>A big high-altitude day before Ojos<\/td>\n<\/tr>\n<tr>\n<td>Atacama<\/td>\n<td>around 5300 m<\/td>\n<td>The final base stage<\/td>\n<\/tr>\n<tr>\n<td>Tejos<\/td>\n<td>around 5800 m<\/td>\n<td>The top camp before the attempt<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The altitudes are those of the current programme and should not be used as a universal template for an independent ascent. The state of the roads, of the camps and of the individual can change what the team actually decides.<\/p>\n<h2>How acclimatisation works<\/h2>\n<h3>A day walk and a sleeping altitude are two different things<\/h3>\n<p>The body normally copes better with a short daytime climb to a given height than with sleeping at the same mark. That is why, when assessing experience, the highest altitude a person has reached and the highest altitude they have slept at are recorded separately. What matters for Ojos is precisely the ability to recover after a night in thin air.<\/p>\n<h3>What to monitor every day<\/h3>\n<ul>\n<li>Headache, and whether it is getting better or worse.<\/li>\n<li>Nausea, appetite and the ability to drink.<\/li>\n<li>Sleep quality and any marked, unusual fatigue.<\/li>\n<li>Breathlessness at rest, coughing, loss of coordination or confusion.<\/li>\n<li>Any change in your capacity for work compared with the previous day.<\/li>\n<\/ul>\n<p>This is not a guide to treating yourself. Any symptom should be reported to the guide immediately. The response may involve stopping the height gain, resting, descending or evacuating. Hiding your condition is dangerous for you and for the whole team.<\/p>\n<h3>What helps adaptation, and what gets in its way<\/h3>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Helps<\/th>\n<th>Gets in the way<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A gradual sequence of sleeping altitudes<\/td>\n<td>Pushing higher simply because the road is passable<\/td>\n<\/tr>\n<tr>\n<td>A steady, slow pace<\/td>\n<td>Competing within the group<\/td>\n<\/tr>\n<tr>\n<td>Drinking and eating regularly<\/td>\n<td>Skipping meals out of tiredness without telling the guide<\/td>\n<\/tr>\n<tr>\n<td>Sleeping warm and recovering<\/td>\n<td>Getting chilled and chronically short of sleep<\/td>\n<\/tr>\n<tr>\n<td>Honest daily monitoring<\/td>\n<td>Concealed symptoms and self-medication<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Pre-acclimatisation<\/h3>\n<p><strong>For the short eight-day programme, the minimum considered is recent altitude from 5000 m upwards.<\/strong> Sleeping altitudes, dates, symptoms and recovery are all checked; the name of a previous summit is not on its own enough to qualify.<\/p>\n<p>Someone with recent high-altitude experience may come into the programme better prepared, but the benefit depends on the sleeping altitudes, the duration and the gap between trips. An old ascent is useful as experience, but it is no substitute for current adaptation.<\/p>\n<p>If Ojos is planned after another peak, it is important to consider not only the height gained but also fatigue, flights, sleep and the real time available to recover. A combination with Aconcagua should be treated as a single expedition, not as two independent bookings. See the <a href=\"https:\/\/mountainguides.pro\/tours\/climbing\/ojos-del-salado-aconcagua\/\">Aconcagua and Ojos del Salado programme<\/a>.<\/p>\n<h2>When the summit stops being the main objective<\/h2>\n<p>If your condition deteriorates, the right objective is a safe descent. A tour that has been paid for, tickets and past training are not arguments against a medical or guiding decision. The summit is not guaranteed even with a perfect plan.<\/p>\n<h2>The practical conclusion<\/h2>\n<p>Do not cut the nights the programme provides for, do not count on a vehicle as a way of cheating altitude, and report any change in how you feel as soon as it happens. Before the trip, read the <a href=\"https:\/\/mountainguides.pro\/2013\/10\/14\/ojos-del-salado-climb\/\">overview of the Ojos del Salado route<\/a>, the <a href=\"https:\/\/mountainguides.pro\/2026\/07\/27\/ojos-del-salado-preparation\/\">training plan<\/a> and the <a href=\"https:\/\/mountainguides.pro\/tours\/climbing\/ojos-del-salado\/\">exact day-by-day itinerary<\/a>.<\/p>\n<h2>The trend matters more than a single reading<\/h2>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Observation<\/th>\n<th>What matters<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Headache<\/td>\n<td>Whether it gets worse or better after rest<\/td>\n<\/tr>\n<tr>\n<td>Appetite<\/td>\n<td>Whether you can eat normally several meals in a row<\/td>\n<\/tr>\n<tr>\n<td>Sleep<\/td>\n<td>Whether there is recovery, not just hours in a sleeping bag<\/td>\n<\/tr>\n<tr>\n<td>Pace<\/td>\n<td>Whether it is steady compared with the previous day<\/td>\n<\/tr>\n<tr>\n<td>Coordination<\/td>\n<td>Whether unsteadiness or unusual mistakes are appearing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>One good oxygen saturation reading, or the absence of symptoms in the morning, does not give the full picture. The leader weighs up several signs together with how you respond to effort.<\/p>\n<h2>Criteria for moving higher<\/h2>\n<ul>\n<li>Your condition is not deteriorating at rest<\/li>\n<li>You are eating, drinking and doing ordinary things<\/li>\n<li>The previous outing did not leave you severely drained<\/li>\n<li>The team has recovered by the planned time<\/li>\n<li>The weather and the road allow a safe move<\/li>\n<li>Descent remains possible if things get worse<\/li>\n<\/ul>\n<h2>How the reserve is used for acclimatisation<\/h2>\n<p>A reserve day is not designated in advance as an extra outing. It may be needed for rest, for waiting on the road, for postponing an attempt or for descending. What it is used for depends on what is constraining the programme at that particular moment.<\/p>\n<p>If the problem is the condition of a participant, another height gain is not rest. The purpose of the reserve is to bring the route back under control, not to preserve the original summit date at any cost.<\/p>\n<h2>Why altitude reached by vehicle demands its own discipline<\/h2>\n<p>On Ojos, three figures must not be conflated: how high the vehicle drove, how high the person walked, and where they slept. The first describes the road, the second the day&#8217;s effort, the third how well a night is tolerated. What a 4&#215;4 can get through is not a medical clearance.<\/p>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Measure<\/th>\n<th>What it shows<\/th>\n<th>What it does not prove<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Drop-off point<\/td>\n<td>The state of the road that day<\/td>\n<td>Readiness to sleep there<\/td>\n<\/tr>\n<tr>\n<td>Height reached on foot<\/td>\n<td>The response to a short effort<\/td>\n<td>The same response while asleep<\/td>\n<\/tr>\n<tr>\n<td>Sleeping altitude<\/td>\n<td>A deeper test of adaptation<\/td>\n<td>Readiness for the next step<\/td>\n<\/tr>\n<tr>\n<td>A good morning<\/td>\n<td>One element of the trend<\/td>\n<td>Permission to ignore pace and appetite<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>The five phases of the standard programme<\/h2>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Phase<\/th>\n<th>The altitude task<\/th>\n<th>What is being checked<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Copiapo<\/td>\n<td>Start the route rested<\/td>\n<td>The flight, health and kit<\/td>\n<\/tr>\n<tr>\n<td>Santa Rosa<\/td>\n<td>First night at 3700 m and a walk higher<\/td>\n<td>Sleep, eating and response to effort<\/td>\n<\/tr>\n<tr>\n<td>Laguna Verde<\/td>\n<td>The next sleeping step<\/td>\n<td>Recovery and readiness for San Francisco<\/td>\n<\/tr>\n<tr>\n<td>San Francisco<\/td>\n<td>A big day up to 6018 m<\/td>\n<td>Pace, symptoms and condition after the descent<\/td>\n<\/tr>\n<tr>\n<td>Atacama and Tejos<\/td>\n<td>Nights at around 5300 and 5800 m<\/td>\n<td>Readiness for the main attempt<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Moving higher is confirmed by the overall trend, not by the calendar. A successful San Francisco is not automatic clearance if the participant recovered badly.<\/p>\n<h2>San Francisco as a test, not a bonus summit<\/h2>\n<p>The route, the altitude, the pace and the purpose of this outing are covered in detail in the article <a href=\"https:\/\/mountainguides.pro\/2026\/07\/27\/san-francisco-before-ojos-del-salado\/\">on San Francisco before Ojos del Salado<\/a>.<\/p>\n<p>The value of the day lies in the information it gives before Ojos. The leader sees your pace above 5000 m, your ability to eat and drink, your coordination and your recovery. Getting to 6018 m at any cost and losing the following stage defeats the purpose of the day.<\/p>\n<p>On returning, the actual data are recorded. A general &#8222;it was hard&#8220; says less than the moving time, the point at which your pace dropped and how you felt the next morning.<\/p>\n<h2>Daily monitoring in the camps<\/h2>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Observation<\/th>\n<th>Why it matters<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Sleep<\/td>\n<td>Shows recovery at a new altitude<\/td>\n<\/tr>\n<tr>\n<td>Appetite and fluids<\/td>\n<td>Determine what you have left for the next outing<\/td>\n<\/tr>\n<tr>\n<td>Headache and nausea<\/td>\n<td>Assessed as a trend<\/td>\n<\/tr>\n<tr>\n<td>Pace<\/td>\n<td>Compared with the previous day<\/td>\n<\/tr>\n<tr>\n<td>Coordination and behaviour<\/td>\n<td>Changes are reported immediately<\/td>\n<\/tr>\n<tr>\n<td>Recovery after cold<\/td>\n<td>Shows readiness for the next night out<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>You report facts rather than making a diagnosis. A single saturation reading does not cancel out symptoms. A measurement taken on cold hands or with a badly fitted device can also be unreliable.<\/p>\n<h2>The short Ojos: how eligibility is confirmed<\/h2>\n<p>The minimum considered is recent altitude from 5000 m upwards. You state the dates, the highest point, the sleeping altitudes, symptoms, medication, pace and recovery. Preferring a convenient eight-day holiday is not a reason in itself.<\/p>\n<p>If the acclimatisation came from Aconcagua, illness, exhaustion, sleep, legs and airways are all re-checked after that first expedition. Reaching a summit does not oblige you to continue with the combination.<\/p>\n<h2>What a vehicle can and cannot do when things deteriorate<\/h2>\n<p>A 4&#215;4 can help with a descent by road where the road is passable. It is not always nearby, it does not guarantee a clear run, and it is no substitute for an early decision. The higher and further you have walked, the fewer options a late report leaves.<\/p>\n<p>How you descend, and whether evacuation is needed, is decided on the basis of your condition, the road, the weather and the resources available. An insurance policy governs cover; it does not create the technical possibility.<\/p>\n<h2>Pace, cold and the dryness of the Atacama<\/h2>\n<p>Dry air, sun, wind and cold all affect drinking, sleep and appetite. These factors do not diagnose altitude sickness, but they can make recovery worse. Follow the team&#8217;s plan and say so if you cannot eat, drink or get warm properly.<\/p>\n<p>Going too fast after being driven up creates a false sense of saving time. The task of the first few hours is to check your response, not to prove your fitness.<\/p>\n<h2>A reserve is not a treatment<\/h2>\n<p>Two reserve days give flexibility on the route, but they do not guarantee adaptation. If your condition worsens, another outing higher is not a substitute for rest or descent. Every change is followed by a fresh assessment.<\/p>\n<p>The reserve may go on a closed road, on recovery, on moving a camp or on going back down. Do not assume in advance that it amounts to two repeat attempts.<\/p>\n<h2>How to put together an altitude summary for Ojos<\/h2>\n<ul>\n<li>The route and the exact dates<\/li>\n<li>The maximum daytime altitude<\/li>\n<li>The sleeping altitudes<\/li>\n<li>The number of consecutive days<\/li>\n<li>Symptoms and medication<\/li>\n<li>The reason for turning back<\/li>\n<li>Your condition after the descent<\/li>\n<\/ul>\n<p>Turning back because of weather does not make the experience count for less. A summit followed by a hard recovery may point to the standard format. Honest data widen the options and help avoid selling the short programme to the wrong person.<\/p>\n<h2>The medical limits of this article<\/h2>\n<p>This article does not prescribe prophylaxis, medication or doses, does not determine contraindications and does not confirm that anyone is fit to take part after an illness. Those questions are for a doctor. On the route, decisions are made by the guides and by whatever medical professionals are available.<\/p>\n<p>Worrying changes in coordination, consciousness or breathing, or a rapid deterioration, must be reported to the team immediately. Wanting to save the summit day plays no part in the assessment.<\/p>\n<h2>How clearance to move higher works in practice<\/h2>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Before the stage<\/th>\n<th>What is checked<\/th>\n<th>What is not clearance<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Santa Rosa to Laguna Verde<\/td>\n<td>The first night, the walk and recovery<\/td>\n<td>A passable road<\/td>\n<\/tr>\n<tr>\n<td>Laguna Verde to San Francisco<\/td>\n<td>Sleep, eating and readiness for a long day<\/td>\n<td>The absence of one complaint in the morning<\/td>\n<\/tr>\n<tr>\n<td>San Francisco to Atacama<\/td>\n<td>The pace up to 6018 m and the state you are in afterwards<\/td>\n<td>The fact of having summited<\/td>\n<\/tr>\n<tr>\n<td>Atacama to Tejos<\/td>\n<td>The night at around 5300 m, the road and your reserves<\/td>\n<td>Being able to drive higher<\/td>\n<\/tr>\n<tr>\n<td>Tejos to Ojos<\/td>\n<td>Sleep, weather, kit and the whole trend<\/td>\n<td>The main attempt being close<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>The night at Tejos and the morning assessment<\/h2>\n<p>A night at around 5800 m is a serious load even for someone who handled San Francisco well. Before setting off, sleep, appetite, coordination, the ability to get yourself organised and any actual change in condition are all assessed.<\/p>\n<p>Whether you are in a refuge or a tent affects daily life but does not cancel out the altitude. Poor recovery cannot be papered over with an early start. The guide decides on the basis of the whole sequence.<\/p>\n<h2>A group with different levels of acclimatisation<\/h2>\n<p>On the standard programme, local guides work with no more than three participants each. That does not guarantee that the group can split any way it likes: if one person goes down, it has to be clear who accompanies them and whether the rest of the group can continue.<\/p>\n<p>On a private trip the number of guides is calculated to fit the group. On a B2B trip the client must have their own leader. A driver and a camp are no substitute for leadership at altitude.<\/p>\n<h2>Fitness, skills and altitude are three different kinds of readiness<\/h2>\n<p>You need endurance for a long day, skills for crampons, the rope system and the upper section, and acclimatisation to function and sleep in thin air. Being strong in one area does not cover the other two.<\/p>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Component<\/th>\n<th>How it is tested<\/th>\n<th>What it does not prove<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Fitness<\/td>\n<td>Long days out and repeated days<\/td>\n<td>How you handle a night at 5800 m<\/td>\n<\/tr>\n<tr>\n<td>Skills<\/td>\n<td>Crampons, harness, ice axe, working in gloves<\/td>\n<td>Freedom from altitude symptoms<\/td>\n<\/tr>\n<tr>\n<td>Acclimatisation<\/td>\n<td>Recent altitudes and nights out<\/td>\n<td>Technical readiness<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>A previous Ojos or Aconcagua<\/h2>\n<p>A past summit shows experience, not lifelong adaptation. For a new trip, what matters is the date, the sleeping altitudes and how you reacted. After Aconcagua, fatigue is assessed as well: acclimatisation may survive better than physical reserves.<\/p>\n<p>If the first expedition ended in illness, injury or exhaustion, the short Ojos is reconsidered. Having paid for the onward journey is not a medical argument.<\/p>\n<h2>Food, water and sleep<\/h2>\n<p>Dryness, wind and cold can all make recovery worse. Say so if you cannot eat, drink or get warm. What you actually consume matters more than how much is stored in the vehicle.<\/p>\n<p>This article does not prescribe a universal daily volume of water. The plan depends on the person, the day and the team. Making large adjustments on your own is likewise no substitute for a medical decision.<\/p>\n<h2>How to use readings from devices<\/h2>\n<p>A pulse oximeter can supplement observation if the measurement is taken correctly and your hands are warm. Altitude, cold, movement and the quality of the device all affect the result. A single number neither confirms readiness nor cancels out worrying signs.<\/p>\n<p>What is compared is the trend under similar conditions, together with how you feel, how you behave and the pace you keep. You do not diagnose yourself from a screen.<\/p>\n<h2>What to record after the expedition<\/h2>\n<ul>\n<li>Dates and camps<\/li>\n<li>Sleeping altitudes<\/li>\n<li>San Francisco and your recovery<\/li>\n<li>The actual drop-off point<\/li>\n<li>Symptoms and medication<\/li>\n<li>The reason for any change<\/li>\n<li>Your condition after getting back<\/li>\n<\/ul>\n<p>A profile like this helps in planning the next mountain and distinguishes real experience from the name of a summit. Medical details are shared only with those who need them to make decisions.<\/p>\n<h2>When the programme has to change<\/h2>\n<p>If the pre-acclimatisation did not happen, or illness, injury or a difficult recovery intervened, eligibility is reassessed. The outcome may be the standard format, different dates or not continuing at all.<\/p>\n<p>A change is not a punishment. It brings the route back into line with the participant&#8217;s actual condition.<\/p>\n<h2>Acclimatisation and the road calendar<\/h2>\n<p>A passable road can shorten the drive, but it should not shorten the time available to adapt. If the vehicle got higher, or got there earlier, the team is not obliged to move the night&#8217;s camp up immediately. The decision stays with the guide.<\/p>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Situation<\/th>\n<th>What to reconsider<\/th>\n<th>What not to do<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>The road is better than expected<\/td>\n<td>Whether the planned camp is still the right one<\/td>\n<td>Go higher to save time<\/td>\n<\/tr>\n<tr>\n<td>The road is closed lower down<\/td>\n<td>The walking load, the timing and supplies<\/td>\n<td>Keep the original attempt schedule<\/td>\n<\/tr>\n<tr>\n<td>Tejos is unavailable<\/td>\n<td>The tent, the start and the sleeping altitude<\/td>\n<td>Treat the substitution as merely a matter of comfort<\/td>\n<\/tr>\n<tr>\n<td>An extra vehicle run<\/td>\n<td>Fuel, communications and recovery<\/td>\n<td>Use the reserve without a fresh assessment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>Acclimatisation after illness and after flying<\/h2>\n<p>A long journey, lack of sleep and an infection coming on can all change the original profile. Report any illness before leaving Copiapo. Not wanting to lose the money you have paid is no reason to hide your condition.<\/p>\n<p>After turning back for medical reasons, any new attempt is discussed with a doctor and with the leader. Retained acclimatisation does not cancel out the reason things went wrong.<\/p>\n<h2>How to compare two Ojos programmes<\/h2>\n<ul>\n<li>The altitude of every night<\/li>\n<li>The day walks<\/li>\n<li>Whether San Francisco is included<\/li>\n<li>A rest day after a big effort<\/li>\n<li>Two reserve days and what they are for<\/li>\n<li>The actual point at which the short programme joins<\/li>\n<li>The number of guides and how the group may split<\/li>\n<\/ul>\n<p>Without these details, the number of days tells you almost nothing about adaptation. A shorter product is not a fast-track version for someone coming from sea level.<\/p>\n<h2>How sleep quality affects the next stage<\/h2>\n<p>Hours in a sleeping bag are not the same as recovery. What matters is whether you could get warm, how often you woke, and whether you can eat and function normally in the morning. Report this before moving higher.<\/p>\n<p>Poor sleep can have several causes and is not something this article can diagnose. The leader assesses the overall trend and stops the height gain if necessary.<\/p>\n<h2>The summit does not end the day at altitude<\/h2>\n<p>After 6893 m the team returns to Tejos and lower. Fatigue, cold and loss of coordination still matter. Keep following instructions and keep reporting any change.<\/p>\n<p>The guide decides on any further driving according to the state of the people, the road and the weather. A vehicle after the summit is not promised as an immediate, comfortable way down.<\/p>\n<h2>Questions to settle before every change of camp<\/h2>\n<p>On Ojos a drive can change your sleeping altitude very quickly, so the decision is checked before anyone gets into the vehicle. A deterioration should not be discussed for the first time after arriving higher up. Report your sleep, appetite, fluid intake, headache, nausea, weakness, coordination and any unusual change in behaviour.<\/p>\n<div class=\"table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Before the action<\/th>\n<th>What has to be clear<\/th>\n<th>Why it matters<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Driving to the next camp<\/td>\n<td>How the previous night went and whether the person recovered<\/td>\n<td>A vehicle saves time but does not soften the altitude jump<\/td>\n<\/tr>\n<tr>\n<td>A day walk<\/td>\n<td>Who is going, who stays lower and when the turnaround is called<\/td>\n<td>The group may move at different speeds<\/td>\n<\/tr>\n<tr>\n<td>Moving the night&#8217;s camp higher<\/td>\n<td>Whether things stayed stable after the day&#8217;s effort<\/td>\n<td>A brief visit to an altitude is not the same as sleeping there<\/td>\n<\/tr>\n<tr>\n<td>Moving up to Tejos<\/td>\n<td>Whether eating, sleeping and self-sufficiency are holding up<\/td>\n<td>A high camp reduces the number of simple options<\/td>\n<\/tr>\n<tr>\n<td>The summit day<\/td>\n<td>Whether the participant is ready not only to go up but to come back<\/td>\n<td>The decision covers the whole day at altitude, descent included<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>No single answer amounts to automatic clearance. The leader weighs up the trend over several days, the weather, the road, the make-up of the group and the reserve available.<\/p>\n<h2>Why you cannot &#8222;catch up&#8220; with the standard programme by vehicle<\/h2>\n<p>If you missed the early stages, a vehicle can bring you to the group but it cannot give you back the nights and outings they have had. Late joining is therefore treated as a separate eligibility scheme, not as a convenient replacement for the start of the route.<\/p>\n<p>For the short format, recent altitude, sleeping altitudes, how you felt after the previous programme and the gap between expeditions are all checked in advance. If those grounds have fallen away because of illness, a long break or an unsuccessful preparatory climb, the calendar is revisited before departure.<\/p>\n<h2>What to tell the leader before Chile<\/h2>\n<ul>\n<li>The dates of your most recent high-altitude routes<\/li>\n<li>Your maximum daytime altitude and your sleeping altitudes<\/li>\n<li>The run of consecutive days above 5000 m<\/li>\n<li>Symptoms, medication and the reasons for any turnaround<\/li>\n<li>Injuries, illnesses and the quality of your recovery<\/li>\n<li>Your experience with crampons and on snow or ice<\/li>\n<li>Insurance with cover to 6893 m<\/li>\n<\/ul>\n<p>This information makes a concrete discussion of the standard or the short programme possible. A concealed problem usually becomes obvious in the Atacama, where the original choice is much harder to put right.<\/p>\n<p>Before departure, keep your insurer&#8217;s contact details to hand and tell the guide where your policy, personal medication and medical information are in case of an emergency.<\/p>\n<h2>The final eligibility checklist<\/h2>\n<ul>\n<li>You have chosen either the standard format or a well-founded short one<\/li>\n<li>You have supplied the dates and sleeping altitudes of your recent altitude<\/li>\n<li>Your recovery from the previous mountain has been checked<\/li>\n<li>A doctor has discussed your individual medical questions<\/li>\n<li>Your insurance matches 6893 m<\/li>\n<li>The guide knows your medication, allergies and past reactions<\/li>\n<li>You are prepared to turn back when the team decides<\/li>\n<\/ul>\n<p>No single item guarantees a summit. Together they reduce the number of avoidable mistakes.<\/p>\n<p><strong>Deciding between the full and the short Ojos?<\/strong> Weigh your recent altitude, your sleeping altitudes and your recovery against the <a href=\"https:\/\/mountainguides.pro\/climb-ojos-del-salado\/\">Ojos del Salado programmes<\/a>; quick access by vehicle is no substitute for acclimatisation.<\/p>\n<p><em>Facts checked: 17 August 2026. This material is not a substitute for medical advice or for the team&#8217;s decisions on the route.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>How acclimatisation works on Ojos del Salado: Laguna Santa Rosa, Laguna Verde, San Francisco, Atacama and Tejos.<\/p>\n","protected":false},"author":14084,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-37575","post","type-post","status-publish","format-standard","hentry","category-articles"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Acclimatisation on Ojos del Salado: camps and altitude profile<\/title>\n<meta name=\"description\" content=\"Acclimatisation on Ojos del Salado: Laguna Santa Rosa, Laguna Verde, San Francisco, Atacama, Tejos and eligibility for the 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