In a feat of unparalleled endurance and skill, Polish alpinist Bartek Ziemski, 31, successfully completed the second-ever ski descent of Mount Everest without supplemental oxygen, a remarkable achievement made even more extraordinary by his entirely self-supported approach. This monumental descent on May 19, 2026, from the 8,848.86-meter summit directly to Base Camp, followed just seven days after he accomplished a similar oxygen-free ski descent of Lhotse, the world’s fourth-highest peak (8,516 meters), on May 12, 2026. Ziemski’s dual triumph marks him as the first individual in history to ski both Everest and Lhotse without supplemental oxygen within a single climbing season, significantly raising the bar for high-altitude ski-mountaineering and minimalist expeditions in the Himalayas.
A New Chapter in High-Altitude Ski-Mountaineering History
Bartek Ziemski’s descent of Mount Everest without supplemental oxygen is only the second such accomplishment in history. The first was achieved by his compatriot, Andrzej Bargiel, in September 2025. While Bargiel’s pioneering descent was lauded as a monumental achievement, Ziemski’s expedition distinguishes itself through its profound commitment to a self-supported ethos. Unlike Bargiel, who benefited from a comprehensive support crew, including Sherpas for logistical assistance, route preparation, and a dedicated film team, Ziemski operated with absolute autonomy. He meticulously carried all his own gear—tent, supplies, and skis—up the formidable slopes of Everest, navigating the treacherous Khumbu Icefall, the Lhotse Face, and the Hillary Step without any external assistance or guided support. This self-reliant approach not only minimizes the environmental footprint of such an expedition but also amplifies the inherent physical and mental challenges, demanding an exceptional level of self-sufficiency, route-finding prowess, and resilience in the world’s most extreme environment.
The summit push and subsequent descent from Everest’s apex require an intricate blend of mountaineering technique and extreme skiing ability. Skiing from the highest point on Earth, particularly without the aid of bottled oxygen, means facing severely diminished cognitive and physical capacities due to hypoxia. At altitudes above 8,000 meters, often referred to as the "death zone," the atmospheric pressure is less than a third of that at sea level, and the partial pressure of oxygen is critically low. This environment pushes the human body to its absolute limits, making every decision, every movement, and every turn on skis a life-or-death calculation. Ziemski’s ability to maintain the necessary focus, coordination, and strength for a full ski descent under such conditions underscores his extraordinary physiological adaptation and mental fortitude.
The Unprecedented Double: Lhotse and Everest in a Single Season
Ziemski’s Everest descent, while historic in its own right, gains an additional layer of legendary status when viewed in conjunction with his Lhotse achievement just a week prior. On May 12, 2026, he summited Lhotse, the world’s fourth-highest mountain, and completed a full ski descent, also without supplemental oxygen. Lhotse, often overshadowed by its taller neighbor Everest, presents its own formidable challenges, including the steep and icy Lhotse Face, which climbers must ascend and descend. To achieve both oxygen-free ascents and ski descents of these two behemoths within such a tight timeframe, enduring the extreme physiological stress and recovery demands, is unprecedented in the annals of high-altitude mountaineering.
This double success is a testament to Ziemski’s meticulous planning, rigorous training, and deep understanding of high-altitude physiology. The logistics of managing two such demanding expeditions back-to-back, especially when self-supported, are staggering. It requires precise acclimatization strategies, efficient camp management, and the ability to conserve energy and make critical decisions under immense pressure. His decision to undertake both peaks in a single season not only demonstrates his ambitious "MAD Ski Project" objectives but also showcases an unparalleled capacity for sustained performance at the very edge of human capability.
The "MAD Ski Project": A Quest for All 14 Eight-Thousanders
Bartek Ziemski’s Everest and Lhotse triumphs are integral components of his ongoing "MAD Ski Project," an ambitious endeavor to ski all 14 of the world’s 8,000-meter peaks without supplemental oxygen. With these latest successes, Ziemski has now completed nine successful oxygen-free ski descents of these formidable giants, a remarkable record that places him among the elite in the world of extreme alpinism.
His previous achievements in this audacious project include successful descents on Gasherbrum II (8,035m), Broad Peak (8,051m), Manaslu (8,163m), Dhaulagiri (8,167m), Annapurna I (8,091m), and Kangchenjunga (8,586m). Each of these descents represents a significant individual accomplishment, requiring unique skills and confronting distinct challenges posed by different mountains and weather patterns. The cumulative experience gained from these expeditions has undoubtedly honed his skills and endurance, preparing him for the ultimate tests of Everest and Lhotse.
With nine peaks now conquered, Ziemski has five remaining mountains on his list to complete the "MAD Ski Project": Cho Oyu (8,188m), Shisha Pangma (8,027m), Gasherbrum I (8,080m), Nanga Parbat (8,126m), and K2 (8,611m). Each of these presents its own set of dangers, from the technical difficulty of K2, often considered the "Savage Mountain," to the avalanche-prone slopes of Nanga Parbat. Ziemski’s self-supported, oxygen-free methodology on these remaining peaks will continue to challenge conventional approaches to high-altitude mountaineering and potentially redefine what is considered achievable in the sport.
The Rigors of Oxygen-Free High-Altitude Skiing
Skiing at extreme altitudes without supplemental oxygen is an endeavor that combines the inherent dangers of high-altitude mountaineering with the technical demands of ski descent. The "death zone" above 8,000 meters presents a cocktail of challenges:
- Hypoxia: The lack of oxygen significantly impairs judgment, coordination, and strength, increasing the risk of falls and errors. It also leads to severe fatigue and makes even simple tasks incredibly arduous.
- Extreme Cold: Temperatures can plunge to -40°C or lower, exacerbated by wind chill. This increases the risk of severe frostbite and hypothermia, making the management of equipment and personal protection critical.
- Avalanche Risk: The steep, often wind-loaded slopes of the Himalayas are highly prone to avalanches. Identifying safe routes and making real-time assessments of snow stability is paramount.
- Crevasses and Seracs: Glacial terrain is riddled with hidden dangers, requiring constant vigilance and advanced crevasse rescue skills, especially when operating alone.
- Technical Terrain: The upper sections of Everest and Lhotse involve steep ice, rock bands, and mixed terrain that demand precise ski control, ice axe, and crampon work. The infamous Hillary Step on Everest, for instance, requires careful negotiation even with fixed ropes, let alone while wearing skis and carrying a heavy pack.
Ziemski’s choice to operate self-supported compounds these difficulties. Without Sherpa teams to fix ropes, carry loads, or set up camps, he bears the full physical burden and decision-making responsibility. This style reduces the margin for error to virtually zero and requires an unparalleled level of self-reliance, risk assessment, and technical proficiency.
Broader Implications for Mountaineering and the Future of Extreme Sports
Bartek Ziemski’s dual-peak ski expedition is far more than a personal quest; it represents a significant evolution in the sport of high-altitude ski-mountaineering. By consciously eschewing supplemental oxygen and a large support crew, Ziemski is advocating for and demonstrating a purer, more minimalist form of alpinism on the world’s highest peaks. This approach resonates with the historical roots of mountaineering, emphasizing individual skill, endurance, and a deep respect for the mountain’s raw challenges.
His success highlights a growing trend within elite mountaineering towards lightweight, fast, and self-sufficient ascents and descents. This movement seeks to reduce the environmental impact of large expeditions and to re-center the focus on the inherent human challenge rather than on logistical superiority. While large, commercially guided expeditions continue to dominate the popular narratives of Everest, Ziemski’s achievements offer a compelling alternative, one that prioritizes the spirit of adventure and individual mastery.
The mountaineering community has reacted with a mix of awe and profound respect. Experts and seasoned alpinists widely acknowledge that Ziemski’s self-supported, oxygen-free descents set a new benchmark for what is possible in the high Himalayas. His actions will undoubtedly inspire a new generation of alpinists to consider more minimalist approaches, potentially influencing future expedition planning and training methodologies.
Looking Ahead: The Remaining Giants
As the "MAD Ski Project" continues, the mountaineering world will eagerly watch Bartek Ziemski’s attempts on the remaining five 8,000-meter peaks. Each mountain presents a unique set of challenges and historical narratives. K2, for instance, is notorious for its extreme weather, technical difficulties, and high fatality rate. Nanga Parbat, known as the "Killer Mountain," is similarly unforgiving. Ziemski’s consistent success and methodical approach suggest that he possesses the requisite skill set, physical conditioning, and mental toughness to tackle these final giants.
His journey is a powerful narrative of human potential, pushing the boundaries of what is considered achievable in the most hostile environments on Earth. Bartek Ziemski is not just skiing down mountains; he is redefining the very essence of extreme alpinism, demonstrating that with enough dedication, skill, and a minimalist philosophy, the seemingly impossible can be brought within reach. His legacy is poised to inspire future generations of adventurers to embrace self-reliance and push their own limits in the wild, untamed corners of the world.
