UTC 100M

Race strategy

Hold a steady pace and save energy for every section.

• 862m descent. Go easy, save your quads.
• Big early climb with 1.7km gain. Hold your pace, save your legs for later.
• Final 1346m descent. Save your legs to go all out on it.
• Long race. Control your HR and effort. Early mistakes cost the most.
• Control your HR on the first climb, save your quads on the descents until 90.1km, then run your race pace, and start the final descent from 94.0km under control, then go all out near the bottom.
• Start · 0.0km–1.2km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
• Settle in · 1.2km–8.0km · Climb of 1415m. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace. Hike the steepest pitches.
• Work · 8.0km–50.8km · Descent of 392m averaging 20%, descent of 862m averaging 15%, descent of 1076m averaging 18%. Plus 3 more climbs. 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. Running pays off here: run wherever you can. Hike the steepest pitches.
• Fade · 50.8km–94.0km · Descent of 760m averaging 11%, climb of 668m, descent of 1228m averaging 12%. Plus 2 more climbs. 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. Hike the steepest pitches. Your heart rate drifts down on its own: don't chase your early-race numbers, go by feel.
• Home · 94.0km–107km · Descent of 1346m averaging 10%. 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

By gradient, 36% of the distance is uphill, 43% downhill and 21% flat. The longest climb runs 12.7km at an average 13.2% grade (1671m of vertical). The longest descent runs 13.5km at an average 10.0% grade (1346m of vertical). The steepest climb averages 44.7% over 0.3km. The steepest descent drops at 45.1% over 0.2km. Surface: 70% trail, 19% technical, and 7% road. Flat-equivalent effort: 204.3 FlatKM.

Summits

The course also passes close to Punta Finosa (887m).

Poles

Trekking poles are strongly recommended: about 18.7km of the course is steep enough for them to pay off.

Quad damage

Quad damage risk is high (index 60 of 100), with 45% of the load in the first half: 5 critical descents, the last of them run on already damaged legs. Downhill-specific preparation and a controlled early pace pay off here.

• Control your HR on the first climb, save your quads on the descents until 90.1km, then run your race pace, and start the final descent from 94.0km under control, then go all out near the bottom.
• #2 · 14.1–16.0 km · 392 m D−, -19.9% · 91.5 km ahead → control
• #1 · 24.0–29.9 km · 862 m D−, -14.5% · 77.6 km ahead → control
• #4 · 42.6–48.5 km · 1076 m D−, -18.1% · 59.0 km ahead → control
• #3 · 50.8–57.7 km · 760 m D−, -11.0% · 49.8 km ahead → control
• #5 · 79.6–90.1 km · 1228 m D−, -11.6% · 17.4 km ahead → control
• 94.0–107.5 km · 1346 m D−, -10.0% · 0.0 km ahead → even, first half under control, let go at the end

Weather

On race day, start temperatures have historically ranged from 22°C to 28°C, with around 13°C at the highest point; the chance of precipitation is about 10%.

Results

296 finishers completed the 2025 edition. Men's winner: Alexis Sevennec (France) in 16:14:44. Women's winner: Maud Combarieu (France) in 21:17:08.