Kiely first played hurling at juvenile and underage levels with the Kilcormac-Killoughey club.
He won an Offaly U20 HC title after a defeat of Belmont in the final in 2021.
[2] Kiely had already joined the club's senior team by this stage, and top scored with 0-07 when Kilcormac were beaten by Shinrone in the 2022 SHC final.
[3] Kiely first appeared on the inter-county scene for Offaly as top scorer during the 2018 All-Ireland MHC.
Kiely made his senior team debut during the 2023 Walsh Cup.