Jack Kuenzle is an endurance coach excited to help athletes reach their potential in the mountains and beyond. As an athlete, he is self coached using Scott Johnston’s training methodology and trained to the highest levels of mountain competition almost entirely in the flats of coastal Virginia.
Born in Dallas, TX, Jack was raised hiking and trail running in northwestern Connecticut. Growing up he was an avid bike packer, completing self supported trips both solo and with friends across Asia and Africa. He attended Yale and received a B.A. in Middle Eastern Studies, where, extracurricularly, he focused on powerlifting and ice hockey. Following graduation, he commissioned as an officer in the U.S. Navy and completed Basic Underwater Demolition SEAL training. Jack served on an east coast SEAL team and completed deployments to Eastern Europe and Africa. In late 2021, Jack left the military to coach and compete full time.
Jack is a competitive mountain athlete with a love for steep, technical racing. In 2018, he completed his first ultra and in 2019 he completed five races at the 50-100K distance, finishing on the podium of every race he’s competed in. Since 2020, he has focused on FKTs, setting records on some of the most competitive mountain efforts in the world. In 2021, he focused on the mountain running scene in the northeast US, snagging records on the Presidential Traverse, Great Range Traverse, and White Mountains Hut Traverse. In 2022 he shifted his attention beyond the northeast, setting the Mount Shasta ascent record, the Mount Hood ascent and round trip records, and the record on the Bob Graham Round in the English Lake District, amongst others. In 2023, he continued his efforts in ski mountaineering FKTs with by any means roundtrip records on Mount Shasta, Denali, and Mount Rainier (in addition to an ascent record there). Outside of racing, he also volunteers as a consultant for FastestKnownTime and is passionate about bringing athletes together for accessible competition. He is based out of Northern California.
