Nike ACG Ultrafly Trail

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) cushioning! 2) durability!! held up against all the sharp rocks. 3) traction. The Vibram outsole works great. Cons: 1) the heel shifts around, there's no way to lock it in properly. This puts extra strain on the joints and ligaments, especially on traverses. 2) tall stack of foam under the heel — you will roll your ankle, guaranteed and more than once. 3) the lacing + "tongue." On descents the laces dig into the instep even through the tongue. I tried lacing it different ways (tight, loose, in between) — same result every time. Summary: better suited for shorter trails (20-50km). On a long race they caused way too many problems. I'll experiment with the lacing and hope I can get rid of the pain.

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 adapt. I regularly use running shoes with 4 mm drop, and it is perfect for me, if nike can make nike ultrafly with 4mm drop, for me will be perfect, but I recommended this product.

Incroyable chaussures ! Dynamique, confortable j’adore 👍🏻