Gilles Sierro

Alpine guide

An alpine guide from Valais, Gilles is a prominent figure in modern steep skiing

Weight
62.5 kg (138 lbs)
Height
180 cm (5'11")
Skis
K2 Dispatch 120
Boots
Dynafit TLT 6, Scarpa F1 XT
46
After a year’s sabbatical, Gilles rejoins our testing team. The supports for his mailbox are a pair of K2 slalom skis. Totally fitting for someone who’s made skiing the center of their life, whether surfing fat skis through powder or carving narrower skis down steep terrain — a talent that’s earned him real renown. Born and bred in Valais, you'll find him exploring terrain across the globe with his loyal clients, but also in his home, the 'Magic Valley’ of Val d'Hérens.
Meet the team: GIlles Sierro

Worked on

these are the products they worked on

tested 2026
Skis
Light
K2
Wayback 89
Width Center: 89 mm
Weight: 1.275 g
tested 2024
Skis
Light
Ski Trab
Magico.2
Width Center: 85 mm
Weight: 1.050 g
tested 2026
Skis
Light
Ski Trab
Mistico.2
Width Center: 90 mm
Weight: 1.100 g
tested 2025
Skis
Light
Elan
Ripstick Tour 88
Width Center: 88 mm
Weight: 1.330 g
tested 2024
Skis
Light
Kästle
TX 87 Up
Width Center: 87 mm
Weight: 1.380 g
tested 2024
Skis
Light
Atomic
Backland 85 UL
Width Center: 85 mm
Weight: 950 g
tested 2024
Skis
Light
Rossignol
Escaper 87 Nano
Width Center: 87 mm
Weight: 1.250 g
tested 2024
Skis
Light
Zag
Adret 85
Width Center: 85 mm
Weight: 1.100 g
tested 2024
Skis
Light
Salomon
MTN 80 Carbon
Width Center: 80 mm
Weight: 1.000 g
tested 2024
Skis
Light
Movement
Fast 85
Width Center: 85 mm
Weight: 930 g
tested 2025
Skis
Light
Salomon
MTN 91 Carbon
Width Center: 91 mm
Weight: 1.250 g
tested 2025
Skis
Light
Dynastar
M-Vertical 82
Width Center: 82 mm
Weight: 1.350 g
tested 2025
Skis
Light
Hagan
Core Carbon 89 Lite
Width Center: 89 mm
Weight: 1.120 g
tested 2025
Skis
Light
Atomic
Backland 89 SL
Width Center: 90 mm
Weight: 1.220 g
tested 2026
Boots
Tour
La Sportiva
Kilo XTR
Buckles: 2
Weight: 1.190 g
Tour Boot of the Year Lady
tested 2026
Boots
Tour
Made for women
Dynafit
Ridge Pro W
Buckles: 2
Weight: 1.130 g