Nike is introducing the ACG Zegama: a rugged, athlete-tested silhouette that combines premium cushioning, protection and traction to help runners move across the world’s wildest terrain — all day and all night.

Built for ultramarathons and long days in the mountains, the ACG Zegama is the most rugged model in the All Conditions running footwear lineup, offering runners a max cushioned ride that leaves no distance or terrain off limits.

“The ACG Zegama is designed, tested and engineered for max cushioning and comfort for the most rugged trail adventures,” says Brenden McAleese, Director, Nike ACG Footwear. “Thanks to feedback from athletes who push the limits, we've obsessed every detail to ensure the ACG Zegama can handle any distance. From the moment you lace up, the wider toe box and trail-tuned ZoomX foam are noticeable, helping you venture into wild, technical terrain in confidence.”

The latest evolution in the trusted Zegama lineage of trail running footwear positions exposed ZoomX foam directly below the foot, delivering a comfortable ride and 85 percent energy return. ZoomX, Nike’s lightest and most responsive midsole compound, also pairs with a bed of Cushlon 3.0 foam to offer runners an added sense of stability on uneven trails.

A Vibram Megagrip outsole with an improved lug pattern and strategic rubber coverage provides unparalleled traction in both dry and wet conditions, improves confidence and control on rugged terrain, and delivers long-lasting durability, meeting the rigors of every run head-on. A forefoot rock plate helps runners move across rocky trails, and a modified heel bump improves foot placement in technical terrain.

A new, trail-specific last provides a more accommodating fit by adding room in the forefoot and toe box. A stretchier, more adaptive gaiter helps keep out rocks and other trail debris. Padding in the tongue and heel offer more comfort over long distances, and a fit band drives additional midfoot support and consistent lockdown.

“The ACG Zegama has the same comfort and stability as its predecessor, which I already loved as a daily trainer, and adds more responsiveness that makes it really fun to race in,” says Caleb Olson, a member of the All Conditions Racing Department and winner of the 2025 Western States Endurance Run. “It’s a sturdy shoe that’s a great option for more technical races, when I’m moving through rocky terrain and need my feet to be comfortable and cushioned all day.”

Every aspect of the ACG Zegama was informed by feedback from the All Conditions Racing Department: 22 elite trail athletes from eight countries and five U.S. states who have put the silhouette through its paces in race-like environments around the world, covering 50 to 100 miles at a time. Many athletes tested the ACG Zegama for up to eight weeks, logging upward of 400 miles. Their feedback, combined with dynamic Nike ACG wear testing during development, helped designers fine-tune the silhouette to the exact demands of ultramarathons and the audacious athletes who run them.

“I first tried the ACG Zegama a few days before a major race on a ridiculously steep and rocky course,” says Tyler Green, All Conditions Racing Department athlete, two-time Western States runner-up and top 10 UTMB finisher. “It’s rare that I’d jump right into a new shoe so soon before a big race, but I made an exception for the ACG Zegama, and it was the right choice. The shoe feels excellent right out of the box; the traction is stellar; and, of course, it looks really good.”

The ACG Zegama draws on Nike ACG’s legacy, beginning in the 1980s, of creating footwear that’s light, fast and speaks trail fluently — delivering bold solutions matched only by the tenacity of the athlete who chooses wild.

The silhouette is also powered by Nike’s 50-year history as the biggest champion of runners and the running community, as well as the brand’s continued commitment to creating the most technologically advanced products to help runners across all disciplines reach their greatest potential. It joins an unparalleled lineup of trail-tuned offerings, road running footwear and racing innovations that serve the needs of all athletes, no matter where and how they choose to run.