|High School:||Sutton Memorial|
As a sophomore: Had a solid season as a long distance runner in 2017-18.
Indoor - Competed in the 3000, 5000, and mile ... Posted best times at 4:46.95 in the mile, 9:36.75 in the 3000, and 16:33.85 in the 5000.
Outdoor - Competed in the 3000m, 5000m, 10,000m, and the 2Mile ... Posted best times at 9:26.23 in the 3000m, 10:19.90 in the 2 mile, 16:14.81 in the 5000, and 35:12.88 in the 10,000 ... Finished second in the 10,000 in the Minuteman Invitational.
As a freshman: Competed in the distance events during his first season in 2016-17.
Indoor - Posted top times of 1:35.96 in the 600, 2:09.10 in the 800 and 2:49.61 in the 1000 ... Named to the NEC Academic Honor Roll.
Outdoor - Posted top times of 2:09.10 in the 800, 4:20.27 in the 1500, 9:32.62 in the 3000, 10:18.23 in the two mile and 16:53.54 in the 5000 ... Named to the NEC Academic Honor Roll.
Before Byrant: Four-year varsity letterwinner on Sutton Memorial under coach Bill Gillin.
Personal: Harrison is the son of Robert and Julie McKinlay ... Has a brother, Grant, and a sister, Sydney.