Saucony Endorphin Pro 4: Redefining Marathon Comfort and Speed
The world of elite running shoes is constantly evolving, with brands pushing the boundaries of what's possible in terms of speed, efficiency, and comfort. Among these innovators, Saucony has consistently delivered game-changing footwear, and their latest iteration, the
Saucony Endorphin Pro 4, marks a significant stride forward. Billed as a softer, wider, and ultimately more accessible marathon racer, the Endorphin Pro 4 isn't just an update; it's a thoughtful re-engineering designed to be your steadfast companion through 26.2 miles and beyond. Released to widespread anticipation on February 1st in Europe and soon after in the US, this premium offering at £230.00/250,00€/$250 aims to revolutionize long-distance running by blending aggressive speed with unprecedented comfort.
Saucony’s Endorphin Pro series has a rich history of pushing the envelope. Since its inception, each version has built upon the last, with the company’s recent shift to a two-year development cycle allowing for more profound, impactful changes. Version 3 saw a major overhaul that introduced a truly bouncy midsole to the line, garnering both praise and some division among runners due to its snug fit and powerful ride. The Endorphin Pro 4, however, takes an even bolder leap, redesigning key elements from the ground up to offer a more universal and comfortable racing experience without sacrificing the essential speed that defines the Endorphin Pro legacy.
Significant Overhauls: What's New in the Endorphin Pro 4?
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Saucony Endorphin Pro 4 represents a complete modernization of Saucony’s original super racer. Gone are the days of minor tweaks; this version boasts a suite of substantial updates aimed at enhancing every aspect of the shoe, from its internal cushioning system to its external fit. The most noticeable changes center around its revitalized midsole geometry, an innovative blend of foams, and a completely new upper designed for broader appeal.
One of the most exciting developments is the introduction of a top layer of
PWRRUN HG foam. This isn't just a new material; it's a strategic enhancement that works in tandem with the existing PWRRUN PB midsole to create a unique underfoot experience. This dual-foam approach signifies Saucony’s commitment to refining the delicate balance between responsiveness and cushioning, aiming for a ride that feels both explosive and protected. Additionally, the overall geometry of the shoe has been refined, including a less aggressive forefoot rocker. While this might sound like a reduction in "oomph," it's a deliberate choice to prioritize long-distance comfort and stability, making the shoe more forgiving over extended efforts. The upper has also undergone a complete transformation, evolving into a higher-volume, wider fit that addresses previous concerns about restrictiveness, opening the door for more runners to experience the Endorphin Pro's prowess.
The Midsole Masterclass: PWRRUN HG & PWRRUN PB Synergy
At the heart of the
Saucony Endorphin Pro 4's performance lies its sophisticated midsole construction. Saucony has strategically layered its cutting-edge foams to deliver a ride that is both incredibly energetic and remarkably stable. The top layer now features
PWRRUN HG, Saucony’s premium, super-responsive foam previously seen in the top-tier Endorphin Elite. This layer sits directly underfoot, providing an immediate, lively sensation with every stride. Beneath it, the core midsole remains
PWRRUN PB, known for its excellent bounce and durability. This combination creates a dynamic interplay, offering a sensation that is described as a "bouncy ride with a pinch of firmness" – a perfect recipe for sustained speed.
Embedded within this plush yet propulsive foam sandwich is a very stiff carbon fiber plate. While the plate remains a key component for propulsion, its interaction with the softer foam layers has been refined. This ensures that despite the increased softness, the shoe maintains excellent stability, preventing any feelings of instability often associated with highly cushioned racers. The new geometry, particularly the less aggressive forefoot rocker, further contributes to this stability. Unlike some hyper-aggressive rockers that demand a specific stride, the Endorphin Pro 4's gentler curve provides a smoother, more natural transition through the gait cycle, reducing fatigue during the later stages of a marathon. This trade-off means a slight reduction in the initial explosive snap some runners crave, but in return, you gain superior comfort and endurance over long distances, positioning the Endorphin Pro 4 as an ideal candidate for marathon racing rather than purely short, fast efforts.
Fit and Comfort: Wider Accessibility for All Runners
One of the most talked-about changes in the
Saucony Endorphin Pro 4 is its significantly updated upper and fit profile. Addressing feedback from previous versions, Saucony has engineered a higher volume and wider fit, making this super racer more accessible to a broader range of foot shapes. This is a game-changer for runners who previously found performance shoes too restrictive or narrow. The new upper is crafted from a light, breathable mesh that still offers a secure lockdown.
Many runners will find the Endorphin Pro 4 fits true to size in their normal men’s or women’s US sizes. However, due to the increased volume, particularly in the forefoot and midfoot, some might perceive it as feeling slightly longer. This extra space is a deliberate design choice to enhance comfort over long durations, allowing for natural foot splay and reducing potential pressure points. The midfoot features a gusseted, stretchy, and thin one-piece tongue, which contributes to the secure yet adaptable fit. It's worth noting that securing the laces tightly, as some runners might need for a race-ready lockdown, can cause the tongue to fold. While this typically doesn't lead to discomfort, it’s a small detail to be aware of. The heel collar is thin on the sides with more cushioning at the posterior, complemented by a thin, flexible heel counter that provides security without being intrusive. For optimal comfort, especially given the inner aspect of the mesh can feel slightly scratchy, wearing socks is highly recommended – going sockless is not advised. For a deeper dive into the specific fit changes and how they impact your run, explore our detailed analysis in this
Endorphin Pro 4 Review: New PWRRUN HG & Fit Changes.
Performance on the Road: Marathon Prowess Unlocked
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Saucony Endorphin Pro 4 truly shines when put to the test over extended efforts, solidifying its position as an outstanding marathon racing shoe. Its primary strength lies in its ability to deliver a soft yet remarkably stable ride, a crucial combination for maintaining form and comfort deep into a race. The integration of the PWRRUN HG topsole with the PWRRUN PB midsole, coupled with the stiff carbon plate, works in harmony to provide an efficient and protective platform that absorbs impact while returning significant energy.
The less aggressive forefoot rocker, a key design evolution, plays a vital role in its long-distance suitability. While some previous iterations of super shoes pushed runners onto their toes with an almost "falling forward" sensation, the Endorphin Pro 4 offers a more controlled and forgiving transition. This subtlety translates to reduced muscular fatigue over the course of a marathon, allowing you to sustain your pace more comfortably without feeling like you're fighting the shoe. It might not have the raw, explosive "oomph" of some of the most aggressive short-distance racers, but for the gruelling demands of 26.2 miles, its enhanced comfort and stability become invaluable assets. This makes the Endorphin Pro 4 an excellent choice for runners seeking a high-performance shoe that prioritizes endurance and consistency, helping them conquer their marathon goals with greater ease and confidence.
Conclusion: Who is the Saucony Endorphin Pro 4 For?
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Saucony Endorphin Pro 4 emerges as a highly competitive and thoughtfully designed marathon racer, making significant strides in comfort, stability, and accessibility. Its blend of PWRRUN HG and PWRRUN PB foams, combined with a re-engineered geometry and a more accommodating upper, offers a ride that is both protective and propulsive. This is a shoe for the marathon runner who values long-distance comfort and sustained efficiency just as much as raw speed. If you've found previous super shoes too aggressive, too narrow, or simply too firm for your marathon endeavors, the Endorphin Pro 4 provides a compelling alternative. It's a premium investment (£230.00/250,00€/$250) in your race day performance, offering a stable yet soft platform to help you achieve your personal best over the longest distances. While it may not be the absolute top-tier choice for those chasing the most aggressive, explosive toe-off for shorter events, for the marathoner seeking a forgiving, fast, and ultimately more comfortable experience, the Saucony Endorphin Pro 4 could very well be your next race day hero.
