Tyler C. Andrews

Tyler C. Andrews (born May 4, 1990) is an American long-distance runner. A trail running, ultra-marathon, and mountaineering specialist, he owns multiple world records on big mountains including Manaslu, Kilimanjaro, and Aconcagua; he also earned a silver medal at the 2016 IAU 50 km World Championships and, in 2019, he won the USA Track and Field 50 Mile National Championship by winning Tussey Mountainback 50 Miler. As of 2025, Andrews competes for La Sportiva's professional team and is preparing for a speed record attempt on Mt. Everest.
Andrews has set more than 85 Fastest known time running records, including the speed records for ascent and descent of Manaslu and Ama Dablam in 2024, Kilimanjaro and Aconcagua in 2023, the Mt. Everest Base Camp Trail in 2024, and Ojos del Salado in 2021.
In addition, Andrews qualified for and ran in the 2016 and 2020 United States Olympic Trials Marathon, qualifying with a 10th place, 2-hour, 16-minute, 59-second finish at the 2014 California International Marathon and a 2-hour, 17-minute, 44-second finish to win the 2018 Vermont City Marathon.
Andrews is also a survivor of Aplastic Anemia and an advocate for research and support via the Aplastic Anemia and MDS International Foundation.
Andrews grew up in Concord, Massachusetts and was diagnosed with Aplastic anemia, a rare and often fatal blood disease, at age 6 in January, 1997. He was treated successfully throughout 1997 at Massachusetts General Hospital in Boston, Massachusetts and has been in remission ever since.
Andrews attended Concord Academy in Concord, Massachusetts. He ran cross country, but showed little promise as a national caliber runner, with a personal best of only 18:30 for 5km.
Andrews attended Skidmore College for one year before transferring to Tufts University where he ran NCAA Division III Cross Country and Track and field and studied mechanical engineering. He qualified for the 10,000m race at the 2012 NCAA Division 3 Track & Field National Championship, where he placed 11th and the 2012 NCAA Division 3 Cross Country Championship, where he placed 104th. He graduated in 2013 with personal best times of 14:45.89 for 5,000m and 30:22.82 for 10,000m. While attending Tufts, Andrews was teammates and roommates with distance runner Matt Rand, with whom Andrews competed at the 2020 United States Olympic Trials (marathon).
Following his collegiate career, Andrews began competing as a professional runner, beginning with his first marathon victory at the Vermont City Marathon, which he would go on to win three times (2014, 2017, 2018).
Andrews' road racing peaked in 2016 when he won the Hudson Mohawk River Marathon in a personal best time of 2:15:52, setting a course record. That same year, he represented the United States at the IAU 50km World Championships in Doha, Qatar, where he earned a silver medal with a time of 2:56:04.
In 2019, Andrews began shifting his focus toward trail and mountain running, setting his first world record on Peru's Salkantay Inca Trail, completing the 60km route in 6:13:02. Later that year, he won the USATF 50 Mile National Championship at the Tussey Mountainback in Pennsylvania, setting a course record of 5:43:26.
During the COVID-19 pandemic of 2020, Andrews demonstrated his versatility by setting the world record for the 50km on a treadmill (2:42:56) during the virtual Chaski Challenge. In the same year, he established his first Himalayan record by completing the Everest Base Camp Trail round trip in 23:42:13.
Andrews has pioneered a unique niche in the mountaineering world, focusing on speed ascents and descents of some of the world's most iconic peaks. In 2021, he set world records on Ojos del Salado, the highest volcano in the world (9:29:46), and Ecuador's Cotopaxi (1:36:35).
His mountaineering accomplishments expanded significantly in 2022-2024, with world records on Mount Fuji (sea to summit to sea in 9:50:38), Aconcagua (11:24:46), Kilimanjaro (6:37:57), and several technical Himalayan peaks including Manaslu (9:52:00), Mera Peak (15:52:00), and Ama Dablam (6:20:30).
By 2024, Andrews had established himself as one of the world’s premier mountain athletes, with over 85 world records on mountains and trails across five continents.
In March 2025, Andrews announced that he would be attempting in May the fastest ascent of Mount Everest without the use of supplemental oxygen.