The Clew Bay 10k follows a single-loop route starting and finishing at the Louisburgh GAA grounds. The course travels west toward the coast before turning inland through the rural countryside. After a relatively level start, runners face a demanding climb reaching over 50m just before the 5km mark. The second half features a steep drop followed by a final plateau and a sharp descent in the closing kilometer. This entirely paved path provides a testing series of undulations throughout the 10k distance.