Mascareignes Trail

The Mascareignes Trail is a 55-kilometer trail race with 3,000 meters of elevation gain, taking place on Reunion Island in the Indian Ocean. The start is in Cilaos, a thermal village perched at 1,200 meters altitude in the heart of the cirque of the same name, one of the three great natural cirques that give Reunion its distinctive silhouette. This race is a deep dive into one of the most extraordinary trail running terrains on the planet.

Reunion is a trail running paradise, and the Mascareignes Trail is one of its finest expressions. The island, born from volcanic activity that built the Piton des Neiges (3,070 meters, the highest point in the Indian Ocean) and the Piton de la Fournaise (one of the world's most active volcanoes), offers a playground of striking verticality and diversity. In just 55 kilometers, runners cross radically different ecosystems, from lush tropical forests to high-altitude heathlands battered by trade winds.

The Cilaos cirque, where the race starts, is a vertiginous natural amphitheater. Its sheer walls, rising over 1,000 meters above the village, set the tone for the event. Reunion's trails are renowned for their technicality: steps carved into volcanic rock, passages equipped with chains and ladders, crossings of deep ravines, and seemingly endless climbs up basalt staircases. The 3,000 meters of positive elevation over 55 kilometers testifies to this extreme verticality.

The Mascareignes Trail course explores the geological and botanical wonders of the island. Runners move through the Bois de Couleurs forest, a unique endemic ecosystem found nowhere else in the world, where tree ferns stand alongside tamarind trees. The viewpoints over the Cilaos cirque, the vertiginous ramparts, and the waterfalls bursting from cliff faces are breathtakingly beautiful. On clear days, the eye reaches all the way to the ocean, a reminder that this mountain rises directly from the depths of the sea.

Race conditions on Reunion are tropical and can change abruptly. Humidity is omnipresent, and tropical downpours can transform trails into muddy torrents within minutes. Heat, even at altitude, is a factor not to be underestimated. Fog can envelop the heights without warning, reducing visibility to just a few meters. These conditions demand constant adaptation and vigilance from runners.

The atmosphere of the Mascareignes Trail mirrors Reunion itself: warm, multicultural, and festive. The local public is renowned for its passion for trail running, and encouragement rings out throughout the course. Aid stations offer local flavors: samosas, chili candies, tropical fruits, and arranged rum for finishers. Creole culture permeates every moment of the race.

Cilaos, the start town, is worth the trip on its own. Its thermal baths, winemaking tradition (Cilaos wine, one of the rare tropical wines), artisanal embroidery, and Creole gastronomy make it an exceptional place to stay. The Mascareignes Trail is a unique tropical adventure, a race where the beauty of the landscapes rivals the intensity of the effort, in a natural setting classified as a UNESCO World Heritage Site.

Mascareignes Trail is a 55 km trail race with 3,000 m of elevation gain, located in Cilaos, La Réunion. The next edition is scheduled for 24 May 2026.

Find all official information on the race website.