The Killeagh 4 Mile follows a single-loop paved course through the rural roads of East Cork, starting and finishing near the Killeagh GAA grounds. The route begins with a gradual climb over the first 1.4 miles before transitioning into a steady downhill middle section. The final third of the course is predominantly level, navigating quiet country lanes with minimal traffic back toward the village. The race concludes at the gates of the GAA complex after a final flat approach.