Tammy Hsieh

Born
Jul 15, 1990 (36 years old)
Events
Marathon · Half Marathon

Tammy Hsieh is a United States long-distance runner, born on July 15, 1990. She competes primarily in the Semi, Marathon and 5Kilometre.

Her personal bests include 1:16:18 in the Semi, 2:37:04 in the Marathon, 18:04 in the 5Kilometre and 1:01:34 in the 10MilesRoa. She is currently active on the international athletics circuit, representing United States.

Personal best · Marathon2:37:04
2025 season best2:42:03Apr 21, 2025 · Boston, MA
Personal best · Half Marathon1:16:18
Last competitionBoston MarathonApr 21, 2025 · 2:42:03

As of Nov 13, 2026: Marathon 2:37:04, Half Marathon 1:16:18, 2025 season best 2:42:03 (Apr 21, 2025, Boston, MA (USA)) · Last competition: Boston Marathon, Apr 21, 2025, 2:42:03 · 36 years old

DisciplineResultAll-time
5KilometreMA 202218:04–
10MilesRoaNY 20211:01:34–

Progression

SeasonDisciplineResultWindDateCompetitions
2025Marathon 2:42:03–Apr 21, 2025Boston Marathon
2024Marathon 2:40:36–Feb 3, 2024U.S. Olympic Team Trials - Marathon
2023Semi 1:16:18–Mar 25, 2023Project 13.1
2023Marathon 2:47:39–Apr 17, 2023B.A.A. Boston Marathon
20225Kilometre 18:04–Apr 16, 2022Boston, MA (USA)
2022Semi 1:21:12–Mar 20, 2022United Airlines NYC Half
202110MilesRoa 1:01:34–Sep 26, 2021New York, NY (USA)
2021Marathon 2:48:46–Dec 5, 2021Sacramento, CA (USA)
FAQ

Frequently asked questions

Tammy Hsieh's Marathon personal best is 2:37:04, set on Dec 3, 2023 in Sacramento, CA (USA).

Tammy Hsieh competes in the Marathon and Half Marathon.

2025 season best: 2:42:03, set on Apr 21, 2025 in Boston, MA (USA). Last competition: Boston Marathon on Apr 21, 2025, 2:42:03.