Saucony Exodus Ultra 4 Review: A Max-Stack Trail Shoe That Can Go the Distance

Introduction

The Exodus line has a long history with Saucony. It arrived during the second generation of purpose-built trail running footwear, answering a clear consumer request: more grip, more protection, and a beefier package for the trails. After roughly a dozen iterations, the line was revamped into the Exodus Ultra, which was one of the first trail shoes on the market about five or six years ago to feature a dual-layered midsole with a core and rim construction. That recipe has carried through the last four versions and into this one.

The original Ultra, however, was stripped down so aggressively that it struggled to live up to its name. Its outsole was closer to a road-to-trail design, and the shoe apparently lost about 40% of its weight on top of the slimming that had already happened across a dozen iterations. It was not a shoe that truly deserved the Ultra badge. The Exodus Ultra 4 does.

Who This Shoe Is For

This is a max-stack trail shoe aimed at runners who want to go far and take on genuinely rugged terrain while doing it. At 11.9 oz, it sits on the heavier end of modern high-stack trail shoes, just over the Brooks Caldera 8 and almost an ounce heavier than the New Balance SuperTrainer-style competition in this class.

The trade-off for that weight is durability and versatility. If you are shopping purely for the lightest high-stack trail shoe available, this probably is not it. If you want one shoe that can handle long distances over messy, mountainous ground, this one can go the distance.

Main Strengths

The upper is an engineered mesh that sits between the highly technical, high-tenacity fiber uppers and a traditional mesh. After roughly 75 miles, including some genuinely gnarly terrain, there is minor fraying but no true deterioration, and no concern about holes developing. It was light, breathable, and comfortable throughout. The previous Exodus Ultra 3 had serious durability complaints: outsoles ripping off and uppers blowing out before the shoe could reach its best miles. The 4 addresses both problems, starting with this tougher upper.

The fit is the standout. While not a wide shoe, it is fairly generous through the midfoot, so runners with wider feet may be pleased. The lacing chain is traditional until it reaches the eyelets over the bridge of the foot, where two eyelets per side are offset. That offset cradles the bridge of the foot and locks it down, and combined with a structured heel and a moderately cushioned tongue, it gives this high-stack shoe real runability on technical terrain that few shoes of this stature can manage.

The midsole is what made this line famous. Think of the Power Run outer shell as a bathtub: a firmer, denser, more traditional EVA foam rim that adds stability and support for long miles. Filling that bathtub is Power Run PB, a blended supercritical foam that delivers noticeable energy return. It shows up most clearly on downhills in the heel, but even toeing off on smooth terrain there is a satisfying sink and rebound that helps both comfort and efficiency.

Then there is the outsole, arguably the biggest update: out with Powertrac, in with Vibram Mega Grip, paired with 4 mm microtraction lugs in a chevron pattern. Four millimeters hits a sweet spot between aggressive and versatile, and the design handled dirt roads, fire roads, singletrack, and off-trail work with equal confidence. Saucony even wrapped the rubber and lugs around the toe, a small detail that genuinely helped on a grassy, rocky off-trail climb during a long run.

Things to Consider Before Buying

Weight is the main consideration. At 11.9 oz this is a heavier option in the category, and runners prioritizing a light, fast high-stack shoe will find better matches elsewhere. The stack measures 36 mm in the heel and 30 mm in the forefoot, and that figure does not appear to include the 4 mm outsole, putting total stack closer to 40 mm. That is a lot of shoe, and it suits durable, versatile use rather than speed-focused racing on smooth ground.

The upper durability, while much improved, shows minor fraying around 75 miles. It is not a dealbreaker, but it is the one area to keep an eye on over the long term.

Buying Advice

Where does this shoe land in the category? It is a very versatile option. It leans toward runners tackling rugged, mountainous, sloppy races, but it also works as a daily trainer. In the right setting it could serve as a one-shoe quiver, handling everyday miles and race day alike.

Scores for this one: Form 4, driven by sensible updates, especially the Vibram Mega Grip outsole, that directly address the outsole and upper durability problems of the third iteration. Fit 5, a rare perfect score, because a max-stack trail shoe that can genuinely cover lots of terrain needs a sensational fit, and this recipe delivers. Function 4, reflecting the extra weight alongside genuinely versatile performance. That totals 13 out of 15, a very solid score for the max-stack trail category.

Conclusion

The Exodus Ultra 4 finally earns the Ultra name. It fixes the two biggest complaints from the previous version with a more durable upper and a Vibram Mega Grip outsole, keeps the core-and-rim midsole recipe that made the line famous, and wraps it all in a fit that makes a big shoe feel runnable almost anywhere. If you want one durable, comfortable trail shoe for long days over rough ground, this deserves a place on your shortlist.