Nike ACG Ultrafly Trail Shoe
Taking lessons learned building their latest distance running shoes, Nike is preparing to drop the off-road equivalent with the ACG Ultrafly. The robust trail shoe was developed over 13 rounds and more than 30,000 miles of testing, and is built around a ZoomX midsole that provides 85 percent energy return, enhanced impact protection, and is exposed to allow it to morph as needed in response to the terrain. A ZoomX sock liner and carbon fiber FlyPlate combine to further boost propulsion and responsiveness, the redesigned upper is more breathable to help tackle water crossings and other trail hazards, and the Vibram Litebase outsole ensures secure grip and control on flat, uphill, and downhill surfaces. The Nike ACG Ultrafly will be available in spring 2026.
