TERRASKIN X01

The X01 is the all-conditions trail shoe in the TerraSkin® range. It is built for long days on wild, varied terrain, rocks, roots, soft ground, mud, wet, at distances up to and around the marathon. The SpeedFrame® chassis gives you cushioned lateral control on uneven ground, the SpinWeave® outsole bites into soft and wet surfaces, and the cushioning is set at 3/5 to keep the platform stable rather than soft. If your runs mix technical climbs, fast flats and committed descents, this is the model designed for that profile.

The X01 runs true to size for most runners. The SkinKnit® upper adapts to the shape of your foot, and the lockdown comes from the sock-shoe system rather than from squeezing your foot in a narrow last. If you have a wider forefoot, or you regularly run long descents where the toes need room, take a half-size up. Toe-box volume on technical terrain is the single most common reason a buyer moves up half a size, the rest of the fit takes care of itself.

Three shoes, three jobs. The X00/C adds a Power-Lite Carbon plate for marathon racing and high-intensity training, energy return on hard efforts. The X01 is the same complete cushioned control platform without the carbon, built for everyday long runs and ultra training on the same demanding terrain. The X03 steps up to 5/5 cushioning, a 6mm drop and a wider fit for ultra distances and first ultra races. Pick the X01 if you want technical control for long trail days without the racing-specific carbon ride.

The SpinWeave® outsole pairs a spiderweb-inspired adaptive lug pattern with Vibram® MegaGrip rubber. The lugs adjust dynamically to uneven ground, which means more rubber actually touches the surface, on wet rock, in mud, on loose descents. The result for you is confident foot placement on the downhill, fewer slips on technical sections, and the freedom to keep running where other shoes ask you to brake.

You can run the X01 with or without socks. The SkinKnit® upper is engineered as a sock-shoe system: GripFix yarns anchor your foot to the footbed, aligned ventilation channels move moisture, and the seamless knit prevents the hot spots that cause blisters. Most runners use a thin performance sock for ultra distances and long days. For shorter sessions, plenty of runners use the X01 sock-free, the system is built to work both ways.