Semi-marathon de la vallée de l'Oust - Malestroit 2027

The Semi-marathon de la vallée de l'Oust is a Saturday race in Malestroit, France, offering both a half marathon and a 10 km option. The half marathon begins in the early afternoon, with the 10 km starting shortly after. The field is capped tightly, and entries and bib transfers may close once the approximately thousand-runner limit is reached. The route begins with a short section through Malestroit’s narrow streets, then follows the Nantes to Brest Canal. Runners use the greenway toward Roc-Saint-André before returning on the towpath, transitioning quickly from town lanes to canal-side running. Registration requires a valid running license or PPS, bibs are collected on site, and every participant receives a gift.