An Olympic finalist, Fahnbulleh is a double NCAA champion and finished fourth at the 2022 World Athletics Championships in the 200 meters race.

[2] His mother was brought up in Liberia but had to flee to the United States to avoid the Liberian Civil War when she was twelve years-old.

[3][4] After being named National High School Coaches' Association boys athlete of the year in 2019, he was encouraged by Florida coach Mike Holloway to attend the University of Florida, and Fahnbulleh subsequently won the 200 m at the 2021 NCAA Outdoor National Championships with a personal best time of 19.91 seconds.

[8] Fahnbulleh made it through to the final of the 2020 Olympics 200 meters race with a time of 19.99 seconds in his semi-final, setting a new Liberian national record.

[11][12][13] Fahnbulleh placed fourth at the 2022 World Athletics Championships in the 200 meters, running 19.84 seconds in the final.