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Toubkal Altitude Sickness - Introduction and Cause

Technically an ascent of Toubkal is classified as a Very High altitude zone. Altitude is defined on the following scale: High Altitude Classification of Zones

High Altitude
  • High 2,500 - 3,500 metres
    • Very High 3,500 - 5,500 metres
      • Extremely High 5,500+ metres

        No specific factors such as age, sex, or physical condition can be used to predict susceptibility to altitude sickness. Some get it and others simply don't. Most people can go up to 2,500 m without significant discomfort.

        What Causes Altitude Sickness?

        Air at sea level comprises about 21% oxygen, while the barometric pressure averages about 1 bar (1000 mbar). As altitude increases, the oxygen concentration remains the same but since the pressure falls the number of oxygen molecules per breath is reduced.

        At 3,500 metres the barometric pressure is only about 630 mbar (depending on weather conditions), so there are roughly 40% fewer oxygen molecules per breath. In order then to supply adequate amounts of oxygen to your body your breathing rate - even while resting - must increase.

        This extra breathing increases the amount of oxygen in the blood, but not to sea level volumes. Since the amount of oxygen required for activity is the same, the body must adjust itself to coping with less oxygen. This process is known as acclimatisation. Failure to give your body the opportunity to undergo this process may lead to a dangerous condition known as AMS, or acute mountain sickness.

        IRPR 901
        March 2026

        You will be collected from your Riad in Marrakesh at 0800 and transferred through the foothills of the High Atlas β€” passing traditional Berber market towns and the spectacular Moulay Brahim gorge β€” to the village of Imlil (1,740m). Here you will meet your mountain guide, who will brief you on the days ahead and check your equipment. Rental gear is available in Imlil village centre if required.

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        On arrival at Marrakesh Menara international Airport, once you have passed through immigration and retrieved your luggage, please look out for your Team Toubkal driver carrying a placard with your name who will transfer you to Riad Aladdin in Marrakesh.

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        You will be collected from your Riad at 0800 and transferred to Imlil where you will meet your guide. Your guide will do a briefing and check your equipment. There are shops to rent equipment in Imlil centre if required. 

        ξ…Ÿ

        You will be collected from your Riad at 0800 am and transferred to Imlil where you will meet your guide. Your guide will do a briefing and check your equipment. There are shops to rent equipment in Imlil centre if required. 

        ξ…Ÿ

        You will be collected from your Riad at 0800 am and transferred to Imlil where you will meet your guide. Your guide will do a briefing and check your equipment. There are shops to rent equipment in Imlil centre if required. 

        ξ…Ÿ

        You will be collected from your Riad at 0800 am and transferred to Imlil where you will meet your guide. Your guide will do a briefing and check your equipment. There are shops to rent equipment in Imlil centre if required. 

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        Your adventure in the Atlas Mountains begins with a collection from your hotel in Marrakech. You'll be transferred to the Dar Imlil, where you can enjoy some mint tea at the panoramic rooftop while taking in the stunning views of Toubkal peak and the entire valley.

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        Starting your day early in Marrakech, you'll wind your way up through the Moulay Brahim Gorge and the upper valleys, taking in the stunning scenery along the way. As you arrive at the foothills of the High Atlas Mountains, you'll meet up with your Berber muleteer crew who will accompany you on your trek.

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        You will be collected from your Riad at 0800 am and transferred to Imlil where you will meet your guide. Your guide will do a briefing and check your equipment. There are shops to rent equipment in Imlil centre if required. 

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        Welcome to the world of Team Toubkal itineraries, where personalised adventure takes centre stage! Our custom itineraries are carefully crafted to elevate your Toubkal journey into an unforgettable experience. Recognising that each adventurer's aspirations are unique, we excel in tailoring your expedition to align with your dreams and preferences.

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