Nike ZoomX Ultrafly Review: A $250 Trail Race Day Shoe With Road Shoe Manners

Introduction

The Nike ZoomX Ultrafly is Nike’s premier trail race day shoe, priced at $250, and it borrows heavily from the brand’s road racing formula. A ZoomX midsole, a full-length carbon Flyplate, and a Vaporfly-like stack height are all wrapped inside a trail-ready package.

Two runners put real miles into this shoe, with a caveat: one did most of his testing on road and treadmill, while the other covered genuinely technical trail, including a rocky stretch of the Appalachian Trail. That mix of surfaces tells you a lot about what this shoe can and cannot do.

Who This Shoe Is For

The Ultrafly is built for race day on smooth, non-technical terrain: fire roads, buffed-out West Coast trails, and fast dirt singletrack. On those surfaces, the runners felt it beats comparable trail racers like the Hoka Tecton X 2 and the Saucony Endorphin Edge, with the caveat that the terrain must not be aggressive.

It is a niche purchase. If you are buying one trail shoe for all-around use, this is not it. The runners were explicit: it is a specific-use race day shoe for smooth terrain, not a do-everything trail trainer.

Upper and Fit

The upper uses Vaporweave, a matte hydrophobic mesh that looks and feels premium. Details are on point, including checkered racing lace tips that nod to Nike’s race day styling. The toe box is unusually wide for a Nike shoe, yet the shoe sculpts the foot well, so it never felt clunky.

On road and treadmill, lockdown felt excellent. A 12-mile road run and a session of 400-meter repeats left a strong impression. On technical trail, however, the story changed. There was noticeable foot movement inside the shoe, and tightening the laces enough to lock the foot in caused numbness, while loosening them left the fit too loose. The upper also lacks the reinforced side walls most trail shoes use to resist rock abrasion, reinforcing the sense that this shoe is not built to survive rough terrain long term.

Midsole: ZoomX, Wrapped and Protected

The stack mirrors the Vaporfly at 38.5mm in the heel and 30mm in the forefoot. The ZoomX foam is encased in a thin, durable fabric wrap that prevents the creasing ZoomX normally shows, and both runners felt it contains the foam’s instability without killing the bounce.

The full-length carbon Flyplate adds a propulsive feel similar to Nike’s road racing shoes. Around the office, the shoe doubled as a genuinely comfortable everyday shoe, one of the most comfortable either runner had worn. On the run, cushioning felt great, though the full rubber outsole layer made the ride a bit slappy on pavement, with less of a snappy toe-off than expected, likely due to the wrapped foam, plate, and rigid outsole combination.

Outsole: Vibram MegaGrip Finally Arrives

Nike’s own trail rubber has historically been slick and disappointing, but the Ultrafly ships with a Vibram MegaGrip Litebase outsole, which the runners called about the best compound available on trails. It gripped wet roads confidently and stuck to everything on trail.

The trade-off is lug depth: only 3.5mm, which is very low for a trail shoe. In a thin layer of mud, it struggles. This is a shoe meant to bomb smooth trails and pick up speed, not claw through East Coast mud.

Where It Struggles: Technical Terrain

On rocky, technical trail, foot movement inside the shoe was a repeated complaint, shared with other testers. More concerning, after a 12-mile road run one runner experienced significant ankle soreness, and a female tester reported a similar experience. The suspicion is that the encased foam, plate, and full rubber layer leave the shoe with less natural give, and it may simply have been the wrong surface for the shoe.

The takeaway: keep this shoe on the surfaces it was designed for, and expect real limits everywhere else.

Buying Advice

At $250, it is the most expensive trail shoe from a major manufacturer, yet the runners felt it still outperforms other shoes at that price point, including offerings from Speedland and Norda. Weight is reasonable for a trail racer: 10.9 ounces, about 309 grams, in a men’s size 10.5.

The verdict is straightforward. For the situations it is made for, it earns top marks; for aggressive trails, it falls short. You need to be serious about trail racing and have a specific use case. If your race is on fire roads and buffed-out trail, and your foot stays locked in, this is a compelling pick with comfort that could carry you to 100 miles.

Conclusion

The ZoomX Ultrafly is a premium, beautiful, genuinely fast trail race day shoe that finally puts Vibram rubber under Nike’s trail runners, with ZoomX cushioning kept stable through clever wrapping. Its weaknesses, a shallow-lug outsole, a less secure upper on rough terrain, a $250 price, and limited versatility, are all the flip side of its specialization. Buy it for smooth-terrain race day, not as your only trail shoe.