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Highly Rated
Nike ACG Ultrafly Trail-Racing Shoes - Baltic Blue/Court Blue

Nike ACG Ultrafly Trail

Trail-Racing Shoes

249,99 €
Black/Photon Dust/Photon Dust
Hyper Crimson/Total Orange/Vivid Purple/White
Volt Tint/Steam/Sea Glass/Burgundy Ash
Baltic Blue/Court Blue
Select SizeSize Guide
  • Colour Shown: Baltic Blue/Court Blue
  • Style: HF5668-400

Nike ACG Ultrafly Trail

249,99 €

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-fibre 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 (men's UK 9)
  • Heel-to-toe drop: 8.5mm
  • Colour Shown: Baltic Blue/Court Blue
  • Style: HF5668-400

Delivery & Returns

Standard delivery costs €5 for non-Nike Members under €99 and Nike Members under €50.

Free 30‑day returns, some exclusions apply.

Reviews (14)

5 stars

  • Top tier trail shoe

    GeoffG940713778

    Incredible trail shoe from Nike…well balanced shoe with a great lockdown. The zoomx is much softer than its predecessor but still offers the connection a trial runner needs from foot to ground. The sole is quite aggressive but you don’t feel it running on tarmac or light trail which is really important to me. I took just under a minute a mile of my pb for a coastal run wearing this shoe, it blew me away. The colour is a lot brighter than the pic and really is an eye catching wear…11/10.

  • My new favorite Trail shoe.

    ToddG124897963

    My first run with these today. Ran a 3 mile trail single track loop that I typically run 4 times/week. New shoes always give me a placebo effect but my perceived effort was less than previous runs and I was 15 seconds per mile faster in these ACGs. They felt awesome out of the box on this non-technical single track. The price is a little steep for a pair of trail runners but they are plated, lightweight and well built. I was impressed. Nike treated me great. This was my second pair. I had one run in my previous pair and the Zoom X foam had a tear near the heal. My first run out was on a technical and rocky trail so not sure if I hooked a rock or something but they took my return and sent me a new pair very quickly and easily. I will use these ACGs on smoother single track and save some more robust shoes for rockier technical trails. Can't wait to get some more miles on them!

  • Just the best

    JamesC972386510

    Well made, light and my go to outdoor and indoor trainers, especially for HIIT sessions. Supportive and nice grip, highly recommended.

Lightweight speed, grip and energy return, come hell or high water.

Engineered for

Trail running

Terrain

Less to Highly Technical

Cushioning

Responsive

Shoe Weight

Approx. 287g (Men's Size 9)

Heel-to-Toe Drop

8.5mm

Tech Specs

Shoe Weight

Approx. 287g (Men's Size 9)

Heel-to-Toe Drop

8.5mm

Powered By

ZoomX Foam, Carbon-Fibre 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-fibre 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.
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Caleb Olson

"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

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