Nike ACG Ultrafly Trail

Trail-Racing Shoes
€249.99
View Product Details
4.6out of 5 stars
How did this product fit?
47% between Runs Small and Runs Big
Would you recommend this product?
How comfortable was this product?
89% between Uncomfortable and Very Comfortable
1-10 of 48 Reviews
Rated 1 out of 5
How did this product fit?:Runs Small
How comfortable was this product?:Uncomfortable
Would you recommend this product?:No
Not what I expected
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.
LarisaPircalabelu
4 Oct 2026
Location
BE
Was this helpful?
Rated 4 out of 5
How did this product fit?:True to Size
How comfortable was this product?:Average
Would you recommend this product?:Yes
I was a happy owner of the original Ultrafly. I used them only for races and they held up brilliantly for their 800km, but then the sole started falling apart and the fabric edges on the sides of the sole tore. After that experience, I expected nothing but the best from the new Ultrafly. Here's my battle-tested review after 100km and +9000m of elevation gain at Canfranc-Canfranc.

Pros: 1)…
Boris5d063ab7776547b4afcbd5e23c40d9ac
21 Sept 2026
Location
ES
Size you normally wear
45.5
What activity do you use this product for?
Longer runs (20+ km)
What type of surface do you usually run on?
Trail
Was this helpful?
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
I bought because my doctor recommended them, after so many problems with my feet (stress fracture 5 metatarsal and arthritis in my big toe, the pain is insupportable) The shoes are so light weight and very comfortable, I am using Nike acg zegama trail, for my longest run, and the nike ultrafly for short run, no more than 3 or 4 miles, because the drop for me is too high 8.5 and I need more time to…
marias390271384
15 Sept 2026
Location
US
Size you normally wear
42
What activity do you use this product for?
Shorter runs (1–5 km)
What type of surface do you usually run on?
Trail
Was this helpful?
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
Incroyable chaussures !
Dynamique, confortable j’adore 👍🏻
davy michellonE252441066
7 Sept 2026
Location
FR
Size you normally wear
44
What activity do you use this product for?
Mid-range runs (6-19 km)
What type of surface do you usually run on?
Trail
Was this helpful?
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 trail shoe for everyday runs
Been running in these for about two months now and really like them. Great grip on gravel and dirt roads, very comfortable to wear and they feel really stable.

Also a big plus: they come in proper large sizes, which is not always easy to find.

Overall, a really great shoe. 5 stars
PeerS502787967
1 Sept 2026
Location
DE
Size you normally wear
47.5
What activity do you use this product for?
Mid-range runs (6-19 km)
What type of surface do you usually run on?
Trail
Was this helpful?
Rated 3 out of 5
How did this product fit?:Runs Big
How comfortable was this product?:Average
Would you recommend this product?:No
Licht und Schatten
Ich war selten so hin und her gerissen zwischen Wow und geht gar nicht bei einem Schuh. Also Dämpfung, Grip und Farbe/Style sind herausragend. Er ist ein stylischer bequemer Hingucker und auf Schotterwegen bergauf wie bergab mit super Traktion ausgestattet. Das nahezu Luftdichte Obermaterial hingegen geht gar nicht. Schön ja, aber null Atmungsaktiv und viel zu hart. Im Fersenbereich hat man zu…
Schiene
30 Aug 2026
Location
Rodewisch, Sachsen, DE
Size you normally wear
44
What activity do you use this product for?
Mid-range runs (6-19 km)
What type of surface do you usually run on?
Road
Was this helpful?
Rated 5 out of 5
How did this product fit?:Runs Small
How comfortable was this product?:Average
Would you recommend this product?:Yes
brilliant
brilliant! not worn yet. but they have a potential to be my favorite pair.
GauriD468641112
21 Aug 2026
Location
GB
Size you normally wear
39.5 or under
What activity do you use this product for?
Walking
What type of surface do you usually run on?
Road
Was this helpful?
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
Awesome Pair
Amazing pair of shoes. I’m a frequent runner on the road and trail (light to mild terrain). Very stable on the heel and very light. The shoes have energy return and you can feel it. It wants you to go faster. I have put in 30 miles and it feels great. Will buy another pair.
Opens Media Viewer to photo submitted by n2nie
n2nie
9 Aug 2026
Location
US
Size you normally wear
42.5
What activity do you use this product for?
Mid-range runs (6-19 km)
What type of surface do you usually run on?
Road
Was this helpful?
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 best!
The ACG Ultrafly performs exceptionally well off‑road. Great traction, durable materials, and a secure fit make them ideal for fast, confident runs on mixed terrain.
RuNaP313470693
1 Aug 2026
Location
DE
Size you normally wear
42
What activity do you use this product for?
Shorter runs (1–5 km)
What type of surface do you usually run on?
Trail
Was this helpful?
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
19 Jul 2026
Location
GB
Size you normally wear
43
What activity do you use this product for?
Longer runs (20+ km)
What type of surface do you usually run on?
Trail
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