Carolan joined the Cuchulainns at a young age and joined the club's senior team in 2020. The club reached the final of the 2025 Intermediate Championship with Carolan scoring a point in their semi-final win over Killinkere.[1] In the final against Butlersbridge, Carolan lined out at centre back, scoring a point as Cuchulainns won their first championship in twenty years.[2]
Carolan was captain of the Cavan under-20 team for the 2022 season.[3] On 22 April, Carolan was in the half-back line as Cavan faced Tyrone in the Ulster final. Tyrone came out winners on a 0–11 to 0–10 scoreline.[4]
Carolan joined the Cavan senior squad in 2022 after the Ulster under-20 final loss. On 28 May, Carolan made his senior debut in a first round Tailteann Cup win over Down, scoring a point as a second half substitute.[5] Carolan made his first senior start in the quarter-final win over Fermanagh on 5 June.[6] Cavan went on to face Westmeath in the final on 9 July. Carolan started the game, with Westmeath coming out winners by four points.[7]
On 1 April 2023, Carolan was at corner back as Cavan faced Fermanagh in the National League Division 3 final. Cavan won the match by 0–16 to 1–7.[8]
