Arrayanes 22K

Race strategy

Run the climb at race pace, build your speed on the downhill, and go all out at the finish.

• Start easy and control your HR up to 6.8km.
• Hold your race pace up to Cerro Otto, but stay in control.
• Final 652m descent. Save your legs to go all out on it.
• Ease into the early runnable section, then run your race pace, and start the final descent from 13.1km under control, then go all out near the bottom.
• Start · 0.0km–2.0km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
• Settle in · 2.0km–6.8km · Ease in: hold back more than feels necessary. The race is still ahead. Running pays off here: run wherever you can.
• Work · 6.8km–13.1km · Climb of 473m, high point 1418m. This is where the race is built: steady, solid effort. Climb by heart rate or breathing, not pace.
• Home · 13.1km–21.4km · Descent of 652m averaging 8%. 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, 41% of the distance is uphill, 48% downhill and 11% flat. The longest climb runs 6.3km at an average 7.5% grade (473m of vertical). The longest descent runs 8.3km at an average 7.9% grade (652m of vertical). The steepest climb averages 18.7% over 0.3km. The steepest descent drops at 17.2% over 1.1km. Surface: 77% trail, 12% smooth, and 9% road. Flat-equivalent effort: 27.3 FlatKM.

Poles

The course is runnable enough that trekking poles are not needed.

Quad damage

Quad damage risk is low (index 14 of 100): a few descents worth noting, none of them decisive.

• Ease into the early runnable section, then run your race pace, and start the final descent from 13.1km under control, then go all out near the bottom.
• 13.1–21.3 km · 652 m D−, -7.9% · 0.0 km ahead → even, first half under control, let go at the end

Weather

On race day, start temperatures have historically ranged from 5°C to 13°C, with around 8°C at the highest point; the chance of precipitation is about 22%.

Results

598 finishers completed the 2025 edition. Men's winner: Marco Augusto Vidoz (Argentina) in 1:33:08. Women's winner: Pía Carayol Bressan (Argentina) in 1:47:35.