Bijan Mazaheri

Bijan Mazaheri (born June 28, 1994) is an American distance runner who specializes in marathons and ultra-marathons. He earned multiple All-American honors in cross country and track at Williams College, before shifting to long-distance road and trail running after graduating. He qualified for the U.S. Olympic Trials Marathon in 2020 and 2024, and was the USA 50 km Champion in 2022. He is also a professor at Dartmouth's Thayer School of Engineering, where he works on the mathematics of causality.

Early life Mazaheri grew up in Wellesley, Massachusetts and attended Wellesley High School. He initially preferred swimming and didn't start running competitively until his junior year of high school. Despite the late start, Mazaheri qualified for the Massachusetts State Track and Field Championships in the 1,000 meters, 1-mile, and 2-mile events. He chose to attend NCAA Division III Williams College and continue his running career.

At Williams, Mazaheri placed as high as third in the NCAA Cross Country Championship (2015), and he was the 2015 NCAA runner-up in the 10,000 meters on the track. Mazaheri also notched multiple All-American awards in the 5,000 meters both indoors and outdoors.

Career After graduating in 2016, Mazaheri moved to England as a Herchel Smith Fellow at the University of Cambridge.

In 2019, Mazaheri progressed to the marathon and placed in the top 10 at the Ottawa Marathon (2:22:11). In the fall, he lowered that mark to 2:15:26 at the Chicago Marathon.

At the Olympic Trials in Atlanta, Mazaheri clocked a time of 2:21:54 to place 73rd of 235 men.

In November 2023, Mazaheri placed 20th of 46 men at the IAU World 50K Championship in India. Due to injury, Mazaheri was unable to compete at the 2024 Olympic Trials Marathon in Orlando.

He placed seventh at the 2024 USA Mountain Running Championship at Loon Mountain in New Hampshire.

Personal As of 2024, Mazaheri is married and living in Lebanon, New Hampshire. He earned his PhD from Caltech and completed a postdoc at The Broad Institute of MIT and Harvard. He is now a professor of engineering at Dartmouth College.