Grand Raid de la Réunion: Overview, Distances and Routes
The Grand Raid de la Réunion is not merely a trail running event; it is a sacred pilgrimage for ultrarunners, an annual test of will set against the raw, volcanic heart of the Indian Ocean.
Held each October on France's "Intense Island," this iconic series comprises five distinct races that traverse the UNESCO World Heritage-listed Réunion National Park. From a challenging 50km introduction to the legendary 170km monster, the Grand Raid offers a spectrum of adventures across the island's three majestic cirques, soaring peaks, and rugged coastal cliffs. Whether you're an experienced mountain goat eyeing the ultimate challenge or seeking a first taste of high-altitude trail racing, this guide will navigate you through the distances, routes, and soul of each race.
Grand Raid de la Réunion - Le Metis Trail
Grand Raid de la Réunion - Le Metis Trail Poster
Your first ultra-trail on Réunion Island deserves more than a digital finisher's certificate. Commemorate the adventure with a stunning, high-quality poster that captures the spirit of the Métis Trail.
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Why Run the Le Metis Trail
As the newest and most accessible race in the Grand Raid series, the Métis Trail is your perfect gateway to the "Intense Island." Limited to just 700 participants via lottery, this race offers an exclusive and intimate trail running experience. It weaves between Saint-Paul and Saint-Denis, showcasing a concentrated dose of Réunion's stunning historical landmarks and panoramic views. It's designed for runners seeking a serious challenge that is monumental in experience yet manageable as a first ultra or a fast, scenic race for seasoned athletes.
Distance & Elevation
The Métis Trail covers a demanding 50 KM with a significant 2,500 M+ of elevation gain. This distance and profile make it a classic mountain ultra-marathon, ideal for runners ready to step up from a standard marathon or looking for a high-quality, technical 50k race. It takes place in October, aligning with the entire Grand Raid festival atmosphere.
Course Description
The course winds its way through the heart of Réunion's dramatic western slopes, linking the coastal towns of Saint-Paul and Saint-Denis. Expect a relentless mix of steep, forested climbs, exposed ridgelines with ocean vistas, and technical descents. Runners will experience a true taste of the island's diverse microclimates and terrain, passing by historical sites that tell the story of Réunion's rich cultural melting pot, perfectly embodying its "Métis" (mixed-race) namesake.
Grand Raid de la Réunion - La Mascareignes
Grand Raid de la Réunion - La Mascareignes Poster
Capture the magic of running from the Cirque de Salazie into Mafate. A La Mascareignes finisher poster is the perfect, lasting trophy for your 74km journey across Réunion.
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Why Run the La Mascareignes
La Mascareignes offers a quintessential Réunion trail experience: a deep immersion into the island's isolated and breathtaking interior. Starting at 1:00 AM in the enchanting village of Hell-Bourg, this race is a true adventure under the stars. It's the ideal choice for runners who want to experience the legendary cirques of Salazie and Mafate—normally only accessible on foot—within a single, epic race. It provides a substantial ultra-distance challenge with incredible cultural and scenic rewards.
Distance & Elevation
This race spans 74 KM with a demanding 3,800 M+ of elevation gain. The profile offers a serious ultra-marathon challenge that will test your endurance and mountain skills, making it a fantastic goal for experienced trail runners seeking a memorable international race. Like all Grand Raid events, it is held in October.
Course Description
The journey begins in the heart of the Cirque de Salazie at Hell-Bourg. Runners immediately tackle the famous Sentier Scout trail, a technical descent that plunges into the otherworldly landscape of the Cirque de Mafate. Traversing this remote, car-free caldera is a highlight, passing isolated hamlets ("iles") before a long haul back to the coast. The final kilometers lead towards the iconic finish line at the Stade de la Redoute in Saint-Denis, offering a true taste of the Grand Raid's spirit.
Grand Raid de la Réunion - Le Trail de Bourbon
Grand Raid de la Réunion - Le Trail de Bourbon Poster
The 100km Trail de Bourbon is a story of resilience. Honor your journey from Cilaos to Saint-Denis with a beautifully designed poster, the ultimate finisher gift for conquering Réunion's history.
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Why Run the Le Trail de Bourbon
More than a race, the Trail de Bourbon is a 100km journey through the living history and soul of Réunion Island. Named after the island's former moniker, "Île Bourbon," this course follows paths once trodden by colonists and escaping slaves. It's the ultimate stepping stone for runners aiming one day to tackle the Diagonale des Fous. With 1,400 beating hearts facing the night and the mountain together, it embodies the raw, communal spirit of ultrarunning. You'll traverse all three majestic cirques—Cilaos, Salazie, and Mafate—in an unforgettable test of endurance.
Distance & Elevation
At 100 KM with a formidable 6,090 M+ of elevation gain, the Trail de Bourbon is a premier mountain 100k ultra. It demands significant experience in long-distance, technical trail running and serves as the perfect preparation race for the 170km distance. It is held in October as part of the Grand Raid weekend.
Course Description
The epic begins in the isolated cirque of Cilaos. Runners face a relentless series of climbs and descents as they cross into Salazie and then the remote Mafate. The defining challenge is the colossal 2,000-meter wall of Maïdo, a 13-kilometer climb that breaks bodies and spirits. After a brief respite at the "Tête Dure" aid station, a punishing 17km descent to the coast awaits. The final stretch follows the historic, paved Chemin des Anglais, a colonial-era path that leads to the emotional finish line at the Stade de la Redoute in Saint-Denis—the "Gate of Deliverance."
Grand Raid de la Réunion - Le Zembrocal Trail
Grand Raid de la Réunion - Le Zembrocal Trail Poster
Conquering 151km as a team of four is a unique bond. Celebrate your collective triumph over the Piton de la Fournaise with a Zembrocal Trail poster, a tribute to teamwork and adventure.
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Why Run the Le Zembrocal Trail
The Zembrocal Trail is the Grand Raid's premier team adventure. Run in teams of four, this race emphasizes camaraderie, strategy, and shared suffering over 151 kilometers. Starting in Saint-Joseph—the birthplace of trail running on the island—it kicks off the entire Grand Raid festival on Thursday evening. The unique relay-style format (with segments of roughly 37km, 35km, 49km, and 39km) allows teams to experience the full breadth of the island's challenges together, from the active volcano to the cirque of Cilaos, creating memories and bonds unlike any solo race.
Distance & Elevation
This team relay covers a massive 151 KM with a staggering 9,130 M+ of elevation gain shared between four runners. It's an expedition-level challenge that requires meticulous planning, team logistics, and collective resilience. It begins on a Thursday in mid-October.
Course Description
The adventure starts in Saint-Joseph and immediately heads into the island's rugged southern interior. The course is famous for its traverse of the active Piton de la Fournaise volcano. For safety, runners now follow a forest road to Pas de Sable before ascending via the Sainte Thérèse Oratory trail to Piton Textor, offering teams a chance to watch competitors cross the lunar Plaine des Sables from above. From the volcanic highlands, the route pushes north through dramatic landscapes towards Cilaos before the final team members race down the historic Chemin des Anglais to the finish in Saint-Denis.
Grand Raid de la Réunion - La Diagonale des Fous
Grand Raid de la Réunion - La Diagonale des Fous Poster
The Diagonale des Fous is more than a race; it's a life chapter. Mark your place among the legends with an iconic poster, a permanent reminder of your 170km journey across the "Intense Island."
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Why Run the La Diagonale des Fous
La Diagonale des Fous—"The Diagonal of the Madmen"—is one of the world's most iconic and extreme trail races. It embodies the pure spirit of adventure and endurance, attracting runners globally to test their physical and mental limits on a course that crosses the very heart of Réunion Island. It's not just a competition; it's a personal odyssey through UNESCO World Heritage landscapes, where solidarity among participants is as vital as individual performance. To finish is to join a legendary tribe of ultrarunners.
Distance & Elevation
The ultimate challenge: 170 KM with a soul-crushing 10,500 M+ of elevation gain. This is a multi-day effort for most, pushing the boundaries of human endurance against extreme terrain and weather. It is the crown jewel of the October Grand Raid weekend.
Course Description
The madness begins at night in Saint-Pierre, with headlamps illuminating the path into the island's formidable southern mountains. The course is a relentless diagonal traverse north to Saint-Denis, crossing lush forests, deep ravines, soaring peaks, and razor-sharp ridges. Runners ford rivers, navigate technical trails, and climb vertiginous peaks, all while battling the island's unpredictable microclimates. The journey through the three cirques and past the Piton des Neiges is as much an exploration of self as it is of Réunion's breathtaking national park.
Overview Comparison
The Grand Raid de la Réunion offers a meticulously crafted ladder of distances, allowing runners to progress through the series. Starting with the intense 50km Métis Trail, you can step up to the 70km Mascareignes for a true cirque-to-cirque experience, then graduate to the historic and grueling 100km Trail de Bourbon. For teams, the 151km Zembrocal Trail presents a unique shared adventure. At the pinnacle sits the 170km Diagonale des Fous, a bucket-list race for elite and experienced ultrarunners worldwide. All races culminate at the iconic Stade de la Redoute in Saint-Denis, creating a unified festival finish.
How to Choose Your Distance
Choosing your Grand Raid distance depends on experience, goals, and appetite for suffering.
Beginners to mountain ultrarunning should target the Métis Trail (50km) or Mascareignes (70km) as an introduction to the island's technical trails. Experienced ultra runners looking for a monumental 100km challenge will find the Trail de Bourbon perfect. The Zembrocal Trail (151km) is ideal for those who thrive in a team environment and want to share the epic journey. Only runners with proven multi-day 100-mile experience and exceptional mountain skills should consider the Diagonale des Fous (170km). View the shorter races as essential stepping stones and reconnaissance missions for the longer challenges.
Registration & Key Dates
All Grand Raid de la Réunion races take place annually in October, with specific dates announced well in advance on the official website. Registration for the most popular races, like the Diagonale des Fous and the Métis Trail, is highly competitive and often involves a lottery system.
The Zembrocal Trail requires team registration. It is crucial to monitor the official Grand Raid website for the opening of registration periods, typically many months before the event. Prepare your qualifiers (required for the longer distances) and be ready to act fast when entries open for this world-renowned trail running festival.
