Nike ACG Ultrafly Trail
Trail Racing Shoes
Shipping
You'll see our shipping options at checkout.- Shown: Light Crimson/Summit White/Summit White/Pure Platinum
- Style: HF5668-600
Nike ACG Ultrafly Trail
Ultralight foam and enhanced grip fuel your trail speed.
The Ultrafly Trail takes what you love about the original and refines it, so you can go the distance. The springy ZoomX foam is more responsive and the full-length carbon plate is softer for a smooth ride. The outsole helps reduce weight while maintaining enhanced grip as the miles pile up.
ZoomX Foam
Ultra-responsive ZoomX foam midsole delivers Nike's highest energy return with a stable feel for the trail. The foam is “unwrapped” in the heel for even better responsiveness.
Breathable Mesh Upper
Don’t worry about puddles or streams—the upper is made for water drainage. It’s also lightweight, durable and breathable.
More Flexibility
Tackle technical terrain with the full-length carbon fiber plate. We reduced the stiffness compared to the original Ultrafly for better control on the trails.
Enhanced Grip
Go the distance with Vibram® Megagrip outsole. It’s designed to give you durability and enhanced grip on wet terrain.
Product Details
- Weight: Approx. 287g/10.1oz (Men's US 10)
- Heel-to-toe drop: 8.5mm
- Shown: Light Crimson/Summit White/Summit White/Pure Platinum
- Style: HF5668-600
Shipping & Returns
Reviews (28)
Reviews (28)
What Reviewers Say
These trail shoes deliver responsive cushioning and excellent grip across varied terrain, from smooth trails to rocky surfaces. The carbon plate adds propulsion without feeling intrusive, making them versatile for both everyday training and faster-paced runs. Fit runs true to size with a roomy toe box, though the midfoot can feel snug for wider feet. The upper construction effectively keeps out debris, and the stable platform handles technical trails, wet conditions, and long distances with confidence.
AI-generated summary
Nike ACG Ultrafly Trail
Lightweight speed, grip and energy return, come hell or high water.
Engineered For
Trail Running & Racing
Terrain
Less to Highly Technical
Cushion
Responsive
Shoe Weight
Approx. 287g/10.1oz (Men's US 10)
Heel-to-Toe Drop
8.5mm
Tech Specs
Shoe Weight
287g/10.1oz (Men's US 10)
Heel-to-Toe Drop
8.5mm
Powered By
ZoomX Foam, Carbon Fiber Flyplate & Vibram® Megagrip
What's New?
- Our newest iteration of ZoomX foam delivers durability, softness and responsiveness made for trail running.
- The full-length carbon fiber plate has reduced stiffness compared to the original Ultrafly.
- Vibram® Megagrip outsole offers exceptional traction on the trail with less weight. Strategically-placed lugs add grip for uphill and downhill racing.
Features That Perform
ZoomX Foam
Ultra-responsive ZoomX foam midsole delivers Nike's highest energy return with a stable feel for the trail.
Breathable Mesh Upper
Don’t worry about puddles or streams—the upper is made for water drainage. It’s also lightweight, durable and breathable.
More Flexibility
Tackle technical terrain with the full-length carbon fiber plate. We reduced the stiffness compared to the original Ultrafly for better control on the trails.
Enhanced Grip
Go the distance with Vibram® Megagrip outsole. It’s designed to give you durability and enhanced grip on wet terrain.
“It’s been my go-to, do-it-all racing shoe that has put me on top of the podium at some of my biggest races.”
Caleb Olson
2025 Western States Champion