About Mascareignes
Mascareignes is the 74.0km ultra trail at Grand Raid Réunion 2026 (Hell-Bourg, France). The race starts on October 16, 2026 at 01:00 AM. It starts in Hell-Bourg and finishes in Saint-Denis. The time limit is 21 h.
Race strategy
Hold a steady pace and save energy for every section.
- Big early climb with 1220m gain. Hold your pace, save your legs for later.
- 1910m descent. Go easy, save your quads.
- Final 690m descent. Save your legs to go all out on it.
- Long race. Control your HR and effort. Early mistakes cost the most.
- Go easy on the first downhill, save your quads on the descents until 46.2km, then run your race pace, and start the final descent from 65.3km under control, then go all out near the bottom.
- Start · 0.0km–1.6km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
- Settle in · 1.6km–15.1km · Descent of 392m averaging 6%, climb of 1223m, high point 1819m. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Hike the steepest pitches.
- Work · 15.1km–36.3km · Descent of 1910m averaging 12%, climb of 678m. This is where the race is built: steady, solid effort. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Hike the steepest pitches.
- Fade · 36.3km–65.3km · Descent of 1018m averaging 10%, climb of 815m. Your energy fades, and that's normal: hold a steady effort and stop counting the miles. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Running pays off here: run wherever you can. Your heart rate drifts down on its own: don't chase your early-race numbers, go by feel.
- Home · 65.3km–72.7km · Descent of 690m averaging 9%. No heroics: settle back into your own effort and hold it to the line. Very long descent: first half under control, then even, let go only near the end.
Course
The course climbs 3800m+. With 51m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 35% of the distance is uphill, 46% downhill and 19% flat. The longest climb runs 8.7km at an average 14.1% grade (1223m of vertical). The longest descent runs 15.7km at an average 12.2% grade (1910m of vertical). The steepest climb averages 49.3% over 0.3km. The steepest descent drops at 45.4% over 0.3km. Surface: 52% trail, 23% road, and 22% technical. Flat-equivalent effort: 113.0 FlatKM.
Poles
Trekking poles are worth taking: about 7.8km of the course favours them.
Quad damage
Quad damage risk is high (index 53 of 100), with 55% of the load in the first half: 3 critical descents, the last of them run on already damaged legs. Downhill-specific preparation and a controlled early pace pay off here.
- Go easy on the first downhill, save your quads on the descents until 46.2km, then run your race pace, and start the final descent from 65.3km under control, then go all out near the bottom.
- #3 · 0.0–6.5 km · 392 m D−, -6.1% · 66.3 km ahead → control
- #1 · 15.1–30.8 km · 1910 m D−, -12.2% · 41.9 km ahead → control
- #2 · 36.3–46.2 km · 1018 m D−, -10.2% · 26.5 km ahead → control
- 65.3–72.7 km · 690 m D−, -9.2% · 0.0 km ahead → even, first half under control, let go at the end
Weather
On race day, start temperatures have historically ranged from 15°C to 18°C, with around 12°C at the highest point; the chance of precipitation is about 40%.
Results
1,435 finishers completed the 2026 edition. Men's winner: Florian Bernabeu-Seguy (France) in 8:13:32. Women's winner: Claire Jacquin (France) in 10:11:27.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Mascareignes.