title “Everest No Filter”. Adrian’s summit attempt was unsuccessful. In the fall of 2016, Ballinger made a second ski descent of Cho Oyu with his partner Emily Harrington, completing the complete expedition in a record setting 14 days door-to-door from the USA. In 2017, Adrian and Cory Richards returned to Everest for a second attempt at climbing the peak without oxygen. On May 27, Adrian reached the summit of Mount Everest without the use of supplemental oxygen. In 2018, Ballinger made his third ascent of Cho Oyu on May 6, and his eighth summit of Everest on May 20. In 2019, Adrian served as the lead guide and expedition outfitter for a Discovery Channel sponsored expedition attempting to uncover the mystery of whether George Mallory and Andrew Irvine made the first summit of Mount Everest in 1924. The expedition was filmed and released as a Discovery.com documentary released in October 2020 called Everest's Greatest Mystery. Also in 2019, an expedition sponsored by Eddie Bauer, Adrian Ballinger and fellow Alpenglow Expeditions guide Carla Perez made an attempt to climb K2 without the use of supplemental oxygen. On July 24, they reached the summit of the second tallest peak on the planet without the use of bottled oxygen. They were supported by Esteban “Topo” Mena, Palden Namgye Sherpa, and Pemba Geija Sherpa. The climb was made into a film produced by Eddie Bauer titled Breathtaking: K2 - The World's Most Dangerous Mountain. In 2022, Adrian returned to Makalu and made the first ski descent. Skiing from the Summit to crampon point before descending back to ABC the same day. Adrian started his ski descent from 15m below the summit due to crowding on the summit. He rappelled a 60m section in the French Couloir without his skis, and descended the rest of the mountain rappelling and using the fixed lines as hand lines sparingly. 8,000m Summits Everest, (8,848m, 29,032’): May 21, 2009 May 5, 2010 May 22, 2010 May 5, 2011 May 20, 2011 May 18, 2013 May 27, 2017 (without supplemental oxygen) May 20, 2018 K2, (8,611m, 28,251’): July 24, 2019 (without supplemental oxygen) Lhotse, (8,516m, 27,940’): May 26, 2011 Makalu, (8,481m, 27,824'): May 8, 2022 Cho Oyu, (8,188m, 26,906’): Sept 25, 2013 (Ski Descent) Oct 1st, 2016 (Ski Descent) May 6, 2018 Manaslu, (8,163m, 26,759’): Oct 3rd, 2008 Sept 28, 2009 Oct 1st, 2010 Oct 5th, 2011 (Ski Descent) See