Conner Blair Mantz is an American long-distance runner born on December 8, 1996, in Logan, Utah. He specializes in the marathon and has established himself as one of the premier distance runners in the United States, competing professionally for Nike since 2021.
Mantz had an exceptional collegiate career at Brigham Young University, winning the NCAA Division I Cross Country Championships in both 2020 and 2021. He has since transitioned to professional road racing with remarkable success, setting American records in both the half marathon at the 2025 Houston Half Marathon and the marathon at the 2025 Chicago Marathon.
As the current American record holder in both the half marathon and marathon distances, Mantz has positioned himself as the leading American distance runner of his generation. His progression from NCAA champion to national record holder demonstrates his exceptional talent and the potential for even greater achievements in road racing.
As of Sep 12, 2026: Marathon 2:04:43 (#79 all-time), 5000 Metres Short Track 13:10.24, 2026 season best 31:19 (Aug 16, 2026) · Last competition: ASICS Falmouth Road Race, Aug 16, 2026, 31:19 · Area record (Half Marathon) · 29 years old
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