Puma Fast Track 4 Nitro Review: Light, Stable Trail Grip for Steep Terrain

Introduction

The Fast Track 4 Nitro is Puma’s newest trail shoe, built around a simple request from runners: something a little lighter and lower profile than before, but with serious grip. Puma heard that feedback clearly, and the result is a stable, bouncy, confident shoe for technical and steep terrain.

It sits alongside two other trail models in the Puma lineup, and knowing where it fits makes the buying decision much easier.

Who this product is for

This is a shoe for runners who spend time on genuinely luggy, steep terrain. If your routes involve climbing and descending hard mountain trails, the Fast Track 4 Nitro is aimed squarely at that kind of running rather than flat, fast gravel.

Puma is primarily focused on race day and everyday cushioned road running, but with many of its athletes also training on trails and cross-training, the brand wanted a dedicated trail option built on its Nitro foam. The Fast Track 4 Nitro is that option.

Main Strengths

The headline update is the outsole. The shoe uses 4mm lugs wrapped in Puma Grip ATR Ultra rubber, covering both the medial and lateral edges for grip in all directions. That wrap-up coverage gives the shoe its monster grip reputation and makes it feel planted on steep ground.

Beyond traction, the balance of the shoe is the real strength. It is light, low to the ground, and stable, while the Nitro foam keeps a bouncy, comfortable ride. There is also solid toe protection up front, and a well-cushioned heel that locks the foot down. The overall feel is comfort without bulk: light, fast, and stable.

Things to Consider Before Buying

The Fast Track 4 Nitro is positioned deliberately: it favors grip and a lower profile over max cushion. Runners who want a plush, soft ride for very long days or flat gravel will be happier with Puma’s Voyage Nitro, which costs $150 and is the brand’s go-to max-cushion option.

Similarly, if your priority is speed over long ultra distances on more mellow tread, the DV8 Elite Trail with its carbon plate and thinner lugs is the more pinnacle, over-$200 option in the lineup. The Fast Track 4 Nitro is the pick when grip on steep stuff matters most.

Buying Advice

At $140, the Fast Track 4 Nitro lands in a genuinely appealing price bracket, just below the Voyage Nitro’s $150. Both sit in what Puma describes as a nice sweet spot, so the choice comes down to terrain: luggy steep mountain routes versus soft-cushion long-distance running.

The shoe is scheduled to release in the middle of January, so availability is imminent for anyone planning a spring trail season. If your running takes you up and down steep mountain terrain, this is a very easy shoe to recommend.

Conclusion

The Fast Track 4 Nitro is a well-executed answer to a clear request: a lighter, lower-profile trail shoe with exceptional grip. With 4mm lugs, Puma Grip ATR Ultra rubber, Nitro foam cushioning, and a $140 price point, it is a strong winner for mountain running and steep trail work.