Cut in half: Nike ACG Ultrafly Trail Review (2026) - RunRepeat

Nike ACG Ultrafly Trail review: Nike clearly listened to feedback from the first Ultrafly, and the ACG reboot delivers a much better product. We found in the lab that the new dual-plate setup, upgraded ZoomX foam, and lower weight create a true trail super sh…

From our point of view, the Nike ACG Ultrafly Trail works best for:
<ul><li>Runners who liked the first generation but wanted fewer compromises and better performance overall.</li><li>Ultrarunners w…