Carbon-plated speed meets elite Vibram® traction for the technical trail
The Nike ACG Ultrafly is a trail racing machine designed to turn technical terrain into a fast track. Built for speed and distance, this version refines the original with a softer, full-length carbon fiber plate that offers a smoother transition and better control on uneven surfaces. Grounded by an exclusive Vibram® Megagrip outsole, it balances ultralight ZoomX responsiveness with the rugged durability required to push through wet and rocky miles without weighing you down.
Features
"Unwrapped" ZoomX foam in the heel delivers Nike’s most responsive energy return for peak trail speed
Refined full-length carbon fiber plate provides a propulsive snap with increased flexibility for better control
Exclusive Vibram® Megagrip outsole offers elite-level traction on slick, wet, and technical terrain
Lightweight, high-tenacity upper engineered for maximum durability and breathable containment
Strategic outsole design reduces overall weight while maintaining high-abrasion resistance for long-range racing
Sizing
The ACG Ultrafly fits true to size. Take your usual shoe size.
If you're not sure, compare your foot length to the chart below
Foot Measurements
US Men's Size
EU Size
Foot Length (in)
7
40
9 11/16
7.5
40.5
9 13/16
8
41
10
8.5
42
10 3/16
9
42.5
10 5/16
9.5
43
10 1/2
10
44
10 11/16
10.5
44.5
10 13/16
11
45
11
11.5
45.5
11 3/16
12
46
11 5/16
12.5
47
11 1/2
13
47.5
11 11/16
14
48.5
12
All measurements are in inches
How to Measure
- Foot Length: Measure from the back of your heel to the tip of your longest toe
Materials
Midsole: ZoomX foam with full-length carbon fiber plate
Outsole: Vibram® Megagrip
Upper: Lightweight trail-ready mesh
About
Nike exists to bring inspiration and innovation to every athlete in the world. By relentlessly pushing the boundaries of sports technology, they create high-performance gear that helps runners of all levels break barriers and achieve their personal best.
