Short Trail 42K

Race strategy

Run easy on the first mountain, then go all out on the second.

• Start easy and control your HR up to the aid station at 10.0km.
• 324m descent. Go easy, save your quads.
• Hold your race pace up to 37.2km, but stay in control.
• Control your HR on the first climb, save your quads on the descents until 13.3km, then run your race pace, and start the final descent from 37.2km under control, then go all out near the bottom.
• Start · 0.0km–2.2km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
• Settle in · 2.2km–9.9km · Plus 1 more climb. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace. Running pays off here: run wherever you can.
• Work · 9.9km–37.2km · Descent of 324m averaging 10%, climb of 717m, high point 2137m. 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.
• Home · 37.2km–42.9km · Descent of 329m averaging 6%. Build to the finish: leave whatever you have left out on the course. Very long descent: first half under control, then even, let go only near the end.

Course

By gradient, 30% of the distance is uphill, 37% downhill and 33% flat. The longest climb runs 12.7km at an average 5.7% grade (717m of vertical). The longest descent runs 5.7km at an average 5.8% grade (329m of vertical). The steepest climb averages 20.3% over 0.3km. The steepest descent drops at 24.2% over 0.4km. Flat-equivalent effort: 55.5 FlatKM.

Poles

Poles bring little benefit here: only about 2.8km of pole-friendly terrain.

Quad damage

Quad damage risk is low (index 19 of 100): a few descents worth noting, none of them decisive.

• Control your HR on the first climb, save your quads on the descents until 13.3km, then run your race pace, and start the final descent from 37.2km under control, then go all out near the bottom.
• #1 · 9.9–13.3 km · 324 m D−, -9.5% · 29.6 km ahead → control
• 37.2–42.9 km · 329 m D−, -5.8% · 0.0 km ahead → even, first half under control, let go at the end

Weather

On race day, start temperatures have historically ranged from 17°C to 22°C, with around 19°C at the highest point; the chance of precipitation is about 34%. Heavy rain of 10.0mm or more falls on about 7% of days around this date.

Results

69 finishers completed the 2026 edition. Men's winner: ADRIAN GASPAR (Argentina) in 3:33:28. Women's winner: MARIA SOL ANDREUCETTI (Argentina) in 4:18:19.