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Highly Rated
Nike ACG Ultrafly Trail-Racing Shoes - Light Crimson/Summit White/Summit White/Pure Platinum

Nike ACG Ultrafly Trail

Trail-Racing Shoes

30% off
Black/Photon Dust/Photon Dust
Hyper Crimson/Total Orange/Vivid Purple/White
Volt Tint/Steam/Sea Glass/Burgundy Ash
Light Crimson/Summit White/Summit White/Pure Platinum
Spruce Fog/Sea Glass/Black Spruce
Hyper Pink/Purple Dynasty/Vivid Purple/Black
Racer Blue/Vivid Purple/Purple Dynasty
Select SizeSize Guide

Klarna Available at checkout.

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  • Colour Shown: Light Crimson/Summit White/Summit White/Pure Platinum
  • Style: HF5668-600

Nike ACG Ultrafly Trail

30% off

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: Light Crimson/Summit White/Summit White/Pure Platinum
  • Style: HF5668-600

Delivery & Returns

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

Free store pick-up and free 30‑day returns. Some exclusions apply.

Reviews (50)

4.5 stars

  • Awesome Shoe From The First Wear! Want Another Pair!

    NatalieS475729170

    I fell in love with these after the first wear to the gym yesterday. The footbed is stable and comfortable, and you can instantly feel the grip the bottom has on the ground. I have been training for Hyrox and I may actually test them out in my simulation this saturday!

  • Semelle VIBRAM pas au rendez-vous !!!

    PHILIPPONNA

    Après deux mois les semelles VIBRAM s’usent trop vite !!!

  • Not what I expected

    LarisaPircalabelu

    Loved the design on these, read reviews and thought they're worth a try. However, after a few small runs - longest 6km - they're hurting my feet so much. They're very snug on the feet, but the heel is not kept in place. The sole also started coming off a bit, but I only ran on rather easy trails. Am a big and longstanding Nike fan and customer, but unfortunately, these shoes don't get my vote / do not meet my expectations for the price I paid.

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

Engineered For

Trail Running & Racing

Terrain

Less to Highly Technical

Cushioning

Responsive

Shoe Weight

Approx. 287g (Men's UK 9)

Heel-to-Toe Drop

8.5mm

Tech Specs

Shoe Weight

Approx. 287g (Men's UK 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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