Born in Ballygawley, County Tyrone, Harte was raised in a strong Gaelic football family. His father, Mickey Harte, played with the Tyrone senior team between 1975 and 1982 before later going on to become the team's most successful manager.
Harte made his debut on the inter-county scene when he was selected for the Tyrone minor team. An Ulster medal winner in 1997, he ended the season as an All-Ireland runner-up. Harte subsequently joined the Tyrone senior team, winning an All-Ireland medal in his final season in 2000. Three years later he was added to the senior panel. Over the course of the following three seasons Harte won two All-Ireland medals and one Ulster medal.
In retirement from playing, Harte became involved in team management and coaching. He has served as joint-manager of the Pomeroy Plunketts and Ballinderry Shamrocks club teams.[2]
Harte has also worked in the media as a Gaelic football analyst for GAA Beo on TG4.