The 5-foot-6, 115-pound junior raced to the Class 5A state meet individual title this past season with a time of 15:54.85, breaking the tape 35.75 seconds ahead of his next-closest competitor and leading the Broncos to a second-place finish as a team. Harrison also won the Foot Locker West Regional championships, then earned All-American status by placing 14th at Foot Locker nationals. A three-time First Team All-State selection, he was unbeaten against in-state competition in 2017.
Harrison has maintained a B average in the classroom. He has made a verbal commitment to run cross country on scholarship at the University of Oregon beginning in the fall of 2019.
Harrison has volunteered locally as a youth running coach.