The Semi-marathon de la Presqu'île is a half marathon held in Lège-Cap-Ferret, located on the Cap Ferret peninsula in southwest France. The race begins and ends at Place de Bertic in Claouey. An accompanying walking event offers the same scenic setting for those preferring not to race the half-marathon distance.
The course departs Claouey, crossing the national forest to reach the oceanfront. It then loops back via forest paths before going through the Pastourelles campsite. Participants will encounter pine forests, sandy terrain, and sea air on this single circuit connecting land and sea. The event is structured as a community gathering with a festive atmosphere, and organizers emphasize environmental preservation of the peninsula alongside race completion.