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Nike ACG Ultrafly Trail

Trail Racing Shoes
$260
View Product Details
4.5out of 5 stars
How did this product fit?
47% between Runs Small and Runs Big
Runs SmallRuns Big
Would you recommend this product?
How comfortable was this product?
87% between Uncomfortable and Very Comfortable
UncomfortableVery Comfortable
sparkles, stars, magic, artificial intelligence, smart

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

16 Customer Photos
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1-10 of 29 Reviews
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  • (24)
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Rated 5 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Very Comfortable
Would you recommend this product?:Yes
My new favourite shoe!
Love these! Stable, grippy, comfortable and FAST!

I'm running 20km+ on dirt, gravel, grass and tarmac. Nothing too technical, its Surrey hills basically.

The wide forefoot is good for me. The heel and the lacing are secure, I get a good hold in the heel without having to do a runners knot.
Tariq7f0314c1740a465eb949cfaca3d8d477
Jul 19, 2026
Location
GB
Size you normally wear
9.5
What activity do you use this product for?
Longer runs (13+ miles)
What surface do you usually run on?
Trail
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Review by Tariq7f0314c1740a465eb949cfaca3d8d477 has been flagged
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Rated 5 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Very Comfortable
Would you recommend this product?:Yes
Great Purchase
Perfect for a quick walk or jog. Great feel!
MichaelJ533796746
Jul 13, 2026
Location
US
Size you normally wear
12
What activity do you use this product for?
Walking
What surface do you usually run on?
Trail
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Review by MichaelJ533796746 has been flagged
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Rated 5 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Very Comfortable
Would you recommend this product?:Yes
Amazing trail shoe.
Fabulous trail running shoe.
I run 5-10k trail runs three times per week, so a fairly amateur runner. I have been using the Pegasus Trail 5 and Peg 4 GTX mainly this year which are both great shoes. I wanted to try these due to the full ZoomX, carbon plate and Vibram sole. I was hesitant because a lot of the reviews online (incorrectly) paint this as a focussed race shoe only. It’s not.…
Opens Media Viewer to photo submitted by TomW644103353
TomW644103353
Jul 11, 2026
Location
GB
Size you normally wear
10
What activity do you use this product for?
Mid-range runs (4-12 miles)
What surface do you usually run on?
Trail
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Review by TomW644103353 has been flagged
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Rated 4 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Very Comfortable
Would you recommend this product?:Yes
Love the color!!! Wide toe box and narrow vamp, GREAT cushioning!!!
The turquoise is beautiful. I wish there were more athletic shoes in this more monochromatic color style. I removed a star due to what I consider a quite wide toe box, yet relatively narrow vamp - and due to this, sizing down wouldn't be an option. I also prefer a cloth material as opposed to this thin whatever-type material, (I realize this will propel water more) but that's just a personal…
KimberleyN539310933
Jul 2, 2026
Location
OH, US
Size you normally wear
7
What activity do you use this product for?
Walking
What surface do you usually run on?
Road
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Review by KimberleyN539310933 has been flagged
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Rated 5 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Very Comfortable
Would you recommend this product?:Yes
I love the new color iv been waiting for one that is actually red for a long time. my favorite color is red and I just did not like when they made one orange and called it hyper crimson.
carson796090627
Jun 18, 2026
Location
US
Size you normally wear
8.5
What activity do you use this product for?
Shorter runs (1-3 miles)
What surface do you usually run on?
Trail
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Review by carson796090627 has been flagged
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Rated 5 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Very Comfortable
Would you recommend this product?:Yes
The shoes are spectacular
These shoes are phenomenal. It took a little break in period but they absolutely sing. I’ve done multiple trail races including a 50k in them. I have over 280 miles on them and they still have pop and feel bouncy and fresh. The toe box is a perfect width. The stability (compared to the ACG zegama) is a little worse, but nothing to be concerned about. They are fast and have held up extremely well.
Opens Media Viewer to photo submitted by TerryS923911156
Opens Media Viewer to photo submitted by TerryS923911156
Opens Media Viewer to photo submitted by TerryS923911156
TerryS923911156
Jun 16, 2026
Location
US
Size you normally wear
10.5
What activity do you use this product for?
Longer runs (13+ miles)
What surface do you usually run on?
Trail
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Review by TerryS923911156 has been flagged
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Rated 5 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Very Comfortable
Would you recommend this product?:Yes
Big improvement over last years Ultrafly
The shoe has a very nice bounce to them when running and the fit is really good. Plenty of room in the toe box kept my feet comfy. I like the way the upper is made because it hugs the foot and does not let in small stones and dirt. Last years Ultrafly let dirt in like crazy and it’s really awesome Nike fixed this. Also all the color ways are really nice looking. I really like the blue color that I bought.
MichaelM710766495
Jun 10, 2026
Location
Manahawkin, NJ, US
Size you normally wear
10.5
What activity do you use this product for?
Mid-range runs (4-12 miles)
What surface do you usually run on?
Trail
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Review by MichaelM710766495 has been flagged
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Rated 5 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Very Comfortable
Would you recommend this product?:Yes
Nice Shoe
Very nice Shoe! The shoe does as it is advertised
JamesM982960062
May 28, 2026
Location
US
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Review by JamesM982960062 has been flagged
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Rated 3 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Uncomfortable
Would you recommend this product?:No
Speedy yet none forgiving
Raced in the first version of the Ultrafly's and thought these would have been an improvement to them. I'll give it to Nike that these are a super snappy shoe with a great upper fit. The Vibram outsole is grippy as well -- no issues there. The main issue I'm having with them is the midsole is even stiffer than the first version! I've gotten 30 miles in the shoes so far and am hoping that it's…
IanS122928791
May 20, 2026
Location
Carbondale, CO, US
Size you normally wear
9
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Review by IanS122928791 has been flagged
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Rated 1 out of 5
How did this product fit?:Runs Small
How comfortable was this product?:Uncomfortable
Would you recommend this product?:No
Poorly Designed for long distance
Fascinating how a long distance trail shoe has no room for expanding with your feet. considering the R&F budget. lets say your 40 miles in to a 100 mile race. how can these adapt to your feet like most other shoes. poor design.
Jason36279447
May 14, 2026
Location
GB
Size you normally wear
10
What activity do you use this product for?
Longer runs (13+ miles)
What surface do you usually run on?
Trail
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Review by Jason36279447 has been flagged
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