The Ashling Murphy 4 Mile follows a single-loop paved course that starts and finishes in Tullamore Town Centre. The route travels through the town along the Arden Road before turning onto the Sragh Road. The course then loops back via Kilcruttin and the railway station, featuring a mix of level town-center streets and quiet local roads. This 4-mile circuit is described as a fast, predominantly flat to undulating loop with a consistent road surface throughout.