The Saint-Pol Morlaix begins at the cathedral in Saint-Pol-de-Leon and finishes 22 km later at the viaduct in Morlaix, Finistere, Brittany. This November road race starts in the afternoon, with registration opening in spring. The main event exceeds a half marathon distance, yet organizers provide a timing mat at 21.1 km, allowing participants to record an official half-marathon split.
The course features more climbing in the initial half, followed by a predominantly downhill section towards Morlaix. Saint-Pol Morlaix has been held annually since 1973, establishing it as Brittany's oldest race and one of France's long-standing road races; French runners frequently refer to it as LA course de Bretagne. The race weekend also incorporates children's races and a 10 km event, with fields sometimes reaching approximately 9,000 participants during periods of high entry numbers. Pierre-Ambroise Bosse, the French 800 m record holder, has previously acted as patron for the event.