In the office, it's no secret that I'm a big fan of the , and after the latest update from , I'm more in love with it than ever.
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Simple, but not so simple! – Saucony Endorphin Speed 4
The design is deceptively straightforward, but execution is where the challenge lies. This shoe offers a quick, energetic, and bouncy running experience with an impressive forward roll. The upper is incredibly light yet surprisingly comfortable, making it perfect for longer runs. It's rare to find these qualities coexist so harmoniously, but when they do, the result is exceptional.
Endorphin Speed has carved out a unique niche; depending on who you ask, it could be classified as a racing shoe, an interval shoe, or a light daily trainer. This versatility is truly remarkable.
In my opinion, Saucony Endorphin Speed 4 is the ultimate second shoe. It's ideal for faster runs but equally suited for longer distances and runs. Additionally, due to the foam's bead structure, a lot of outsole rubber, and a quality upper, it has a longer lifespan than the typical racing shoe.
Super Responsive – Saucony Endorphin Speed 4
Just like the previous version, the midsole is called PWRRUN PB, and it's light and responsive. It's made from PEBA, currently the fastest foam material on the market.
Embedded in the midsole is a nylon plate, adding a bit of stiffness to the midfoot. This feature enhances the heel-to-toe transition, increases take-off, and provides more. These qualities make Endorphin Speed 4 a fantastic ally for fast, enjoyable rides.
Comparing Speed 3 with Speed 4, the changes in the midsole are small, only minor geometric adjustments.
However, the insoles have undergone a remarkable transformation. It might seem insignificant, but Saucony's ability to make high-quality insoles that complement the midsole with comfortable and responsive foam is outstanding.
It's surprising that other brands haven't adopted this approach. Unlike typical insoles, which prioritize comfort, Saucony's Super Responsive Sockliner (SRS) provides a layer of highly responsive super foam for your feet to rebound from.
Lightweight Comfort – Saucony Endorphin Speed 4
Endorphin Speed 4 aims to give you maximum comfort in a light, breathable package. It's impressive how Saucony has managed to incorporate such comfort into the shoe's ultra-light and ventilated upper.
Not much has changed from Endorphin Speed 3. The mesh upper remains almost the same but now includes a new partially sewn tongue, secured with small elastics on each side to stay in place, increasing breathability.
Initially, the double-layered mesh tongue felt strange as I was used to a different design, but I quickly forgot all about it when tying the laces. I'm convinced it will contribute to the shoe's breathability, especially on warmer summer days.
The shoe's width is quite standard, providing some space around the toes without being too roomy, and the size is accurate. My US size 11 fits perfectly and provides the necessary space for my longer runs.
Holds the Corners – Saucony Endorphin Speed 4
Despite its low weight, the amount of outsole rubber on Saucony Endorphin Speed 4 is surprising. The forefoot has especially extensive coverage, and the rubber seems to be slightly stickier in this new version.
My tests have been limited to wet winter roads in Denmark, and so far, I have no complaints about the grip. The rubber feels softer and provides better grip on landing - a welcome improvement since Endorphin Speed 3 tended to slide a bit under more severe conditions.
A Winning Formula – Saucony Endorphin Speed 4
Saucony is aware of its winning formula and wisely chooses not to make drastic changes to the Endorphin Speed line. The design is highly appreciated, and unless Saucony introduces a new foam or technology that significantly surpasses current offerings, there's no reason to reinvent the wheel.
In my opinion, Saucony Endorphin Speed 4 has improved on all functions to varying degrees. For some, it's the ultimate lightweight daily trainer, while for others, like myself, it serves as the ultimate secondary shoe for faster, longer runs. Regardless, it continues to perform just as well as its predecessor, and in my opinion, it's a shoe every speed-loving runner should try.
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