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 Everest, 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.

Andrews has set more than 100 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.

Career

Youth and Aplastic Anemia Treatment 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.

High school 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 5 km.

College 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).

Professional career

Road Running (2013-2018) 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 Mohawk Hudson River Marathon in a personal best time of 2:15:52, setting a course record. His record was broken by Joe Whelan in 2022. Andrews represented the United States at the 2016 IAU 50 km World Championships in Doha, Qatar, where he earned a silver medal with a time of 2:56:04.

Transition to Mountain and Trail Running (2019-2021) 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 60 km 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 50 km 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.

High-Altitude Mountaineering Records (2021-Present) 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 100 world records on mountains and trails across five continents.

In March 2025, Andrews announced that he would be attempting the fastest ascent of Mount Everest without using supplemental oxygen. Andrews made three unsuccessful record attempts in May, before returning in late September for two more tries. He progressed as high as 26,400 feet, but turned around due to deep snow pack and an elevated risk for avalanches. On May 28, 2026 Andrews summited Mount Everest using supplemental oxygen in a new world record of 9:55:43, improving the previous record of 10:56:46, set by Lhakpa Gelu Sherpa in 2003, by over an hour.

Achievements and records Year Competition Venue Position Event Notes2013Boston's Run to Remember Half MarathonBoston, Massachusetts, United States1st (Course Record)Half-marathon1 h 7 min 3 s2014Vermont City MarathonBurlington, Vermont, United States1stMarathon2 h 20 min 26 s2015USA Track & Field 50 km Road ChampionshipsIslip, New York, United States2nd50 km3 h 5 min 33 s2015STRIVE Treadmill 10KArlington, Virginia, United States1st10 km29 min 6 s2015Boston Marathon Expo Treadmill Half MarathonBoston, Massachusetts, United States1stHalf-marathon1 h 3 min 382016US Olympic Team Trials MarathonLos Angeles, California, United States83rdMarathon2 h 33 min 30 s2016Mad City 50KMadison, Wisconsin, United States1st (Course Record)50 km2 h 56 min 1 s2016Hudson Mohawk River MarathonAlbany, New York, United States1st (Course Record)Marathon2 h 15 min 52 s2016IAU 50km World ChampionshipsDoha, Qatar2nd50 km2 h 56 min 4 s2017Mainichi Biwako MarathonOtsu, Japan22ndMarathon2 h 16 min 7 s2017Vermont City MarathonBurlington, Vermont, United States1stMarathon2 h 19 min 41 s2018Vermont City MarathonBurlington, Vermont, United States1stMarathon2 h 17 min 44 s2019Valentine Invitational 5,000mBoston, Massachusetts, United States12th5,000m14 min 22.93 s2019Salkantay Inca TrailSoraypampa, Cusco, PeruWorld Record60 km6 h 13 min 02 s2019Tussey Mountainback 50 Mile (USATF 50 Mile National Championship)Boalsburg, Pennsylvania, United States1st (Course Record)50-mile5 h 43 min 26 s2020US Olympic Team Trials MarathonAtlanta, Georgia, United States82ndMarathon2 h 22 min 51 s2020Chaski Challenge Treadmill 50KConcord, Massachusetts, United States1st50 km2 h 42 min 56 s2020Everest Base Camp Trail (Round Trip)Lukla, NepalWorld Record110 km23 h 42 min 13 s2021Ojos del Salado (Ascent and Descent)Copiapo, ChileWorld Record54 km9 h 29 min 46 s2021Cotopaxi (Ascent and Descent)Cotopaxi, EcuadorWorld Record5 km1 h 36 min 35 s2021Javelina Jundred 100KMcDowell, Arizona, United States1st100 km8 h 49 min 9 s2022Leadville Trail MarathonLeadville, Colorado, United States1st (Course Record)Marathon3 h 22 min 24 s2022Mt Fuji (Sea to Summit to Sea)Fuji, Shizuoka, JapanWorld Record75 km9 h 50 min 38 s2023Aconcagua (Ascent and Descent)Aconcagua, Mendoza Province, ArgentinaWorld Record65 km11 h 24 min 46 s2023Kilimanjaro (Ascent and Descent)Mweka, Moshi District, TanzaniaWorld Record43 km6 h 37 min 57 s2023Mount Washington Road RaceGorham, New Hampshire, United States3rd12 km1 h 02 min 6 s2023Three Passes LoopNamche, Khumbu, NepalWorld Record85 km19 h 50 min 55 s2024Cerro Provincia (Ascent and Descent)Las Condes, Santiago, ChileWorld Record24 km3 h 09 min 06 s2024Ojos del Salado (Ascent)Copiapo, ChileWorld Record7 km2 h 22 min 52 s2024Rucu Pichincha (Ascent)Quito, Pichincha, EcuadorWorld Record9 km1 h 42 min 45 s2024Polichaski Vertical Kilometer (Ascent)Quito, Pichincha, EcuadorWorld Record5 km49 min 41 sec2024Quito Trail Ecuador by UTMB, Oso 82KQuito, Pichincha, Ecuador1st, Course Record82 km8 h 32 min 45 s2024 Manaslu (Ascent)Mansiri Himal, NepalWorld Record14 km9 h 52 min 0 s2024Mera Peak (Ascent)Hinku Valley, NepalWorld Record82 km15 h 52 min 0 s2025Cotopaxi (Ascent and Descent from North Park Entrance)Cotopaxi, EcuadorWorld Record32 km4 h 30 min 4 s2026Mount Everest (Ascent)Solokhumbu District, NepalWorld Record30 km9 h 55 min 43 s

References