[1][2] Harte joined the Gort club at a young age and played in all grades at juvenile and underage levels.

Playing at centre-forward, he ended the game on the losing side after being held scoreless in the 3-12 to 1-15 defeat by Liam Mellows.

[9] Harte was dropped from the starting fifteen for the All-Ireland final on 8 September 2007 but was introduced as a substitute at midfield for David Kennedy and claimed a winners' medal after the 5-11 to 0-12 defeat of Dublin.

[11] On 2 May 2010, Harte was switched to right wing-forward and scored three points in Galway's 2-22 to 1-17 defeat by Cork in the National League final.

[16] On 7 July 2013, Harte was selected on the substitutes' bench when Galway qualified to play Dublin in the Leinster final.

[20] On 22 April 2017, Harte scored two points from left wing-back when Galway won the National League title after a 3-21 to 0-14 victory over Tipperary in the final.

[21] The subsequent championship saw Galway qualify for a Leinster final meeting with Wexford, with Harte being deployed in the left corner-back position.

[22] On 3 September 2017, Harte was switched to his usual position of left wing-back when Galway faced Waterford in the All-Ireland final.

[23][24] On 1 July 2018, Harte lined out at left wing-back for Galway in their 0-18 apiece draw with Kilkenny in the Leinster final.

[25] The replay a week later saw him end the game with a third provincial winners' medal after scoring two points from play in Galway's 1-28 to 3-15 victory.