A few years ago, fast running shoes were a closed club. Carbon plates and bouncy super-foams lived in the racing flats elite athletes wore for a single marathon, then retired. The Saucony Endorphin range is one of the shoes that broke that club open, taking genuinely race-grade technology and building it into trainers that ordinary runners could afford to wear week after week.
But the Endorphin name now covers several very different shoes, and the marketing language around plates and foams has become a fog. This is a plain-English guide to what the technology actually does, which Endorphin suits which runner, and whether it earns the loyalty it inspires.
A closer look
Our top pick for daily miles
Saucony Triumph 23
★ 4.6 · 467 reviews
Saucony's plush max-cushion daily trainer, now lighter, softer and bouncier on a full-length PWRRUN PB foam.
- Full-length PWRRUN PB supercritical foam
- Around 38g lighter than the Triumph 22
- 37mm heel / 27mm forefoot, 10mm drop
- Soft and responsive, plush without feeling dead
$179.99 AUD
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Saucony Triumph 23, reviewed
An independent expert review of the Triumph 23 ride, foam and fit.
What does the foam actually do?
The heart of the Endorphin range is a foam Saucony calls PWRRUN PB. The PB stands for the material family known as peba, a lightweight, springy foam that returns far more of the energy you put into each stride than traditional EVA midsoles. In simple terms, it compresses under your foot and then pushes back, so a portion of the effort of landing is recycled into your next step.
This matters most over distance. A small energy saving per stride is invisible on a short jog, but multiplied across the tens of thousands of strides in a long run or a marathon, it adds up to real fatigue resistance. That is why peba foams transformed the sport. The Endorphin made one of the best examples accessible at a trainer price rather than a one-race-flat price.
What is the plate for, and is it carbon?
Two of the Endorphin shoes use a plate embedded in the midsole. The plate is not there to act like a spring on its own, despite how it is often described. Its real job is to stiffen the shoe lengthwise so that the soft foam does not simply collapse and waste energy. A stiff platform paired with a rockered shape encourages the foot to roll forward quickly through each stride.
Saucony calls that rocker SPEEDROLL. Picture the curved base of a rocking chair. The sole is shaped so that once you land, your weight tips forward toward the toe almost automatically, which keeps your cadence quick and your contact time short. The plate and the rocker work together. Remove one and the other loses most of its benefit.
Plate material
The plate in the racing-focused Endorphin is carbon, while the more accessible trainer in the range traditionally used a nylon plate that is more forgiving and durable for everyday miles. Always check the spec of the exact model and year you are buying, since materials are revised between versions.
Which Saucony Endorphin should I buy?
The range splits cleanly by purpose. Choosing well is mostly about being honest with yourself about how and how often you run.
- Endorphin Speed: nylon plate, generous foam, built for daily training and tempo runs. The best all-rounder and the one most runners should start with.
- Endorphin Pro and Elite: carbon plate, lighter, firmer, tuned for race day and fast efforts. More aggressive and less forgiving for slow miles.
- Triumph: not a plated Endorphin but the plush, max-cushion stablemate built on the same PWRRUN PB foam for easy and recovery days.
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Does the hype hold up on real roads?
For most runners, yes, with a caveat. The energy return and the rockered roll are not placebo. Tempo runs feel smoother and quicker, and long runs leave the legs less hammered than a firm traditional trainer would. The shoes genuinely make fast running feel more accessible.
The caveat is that super-foams are softer and less stable than old-school midsoles, and the racing models in particular reward an efficient forefoot or midfoot stride. If you are a heavier heel striker or you are new to running, the plush Triumph or the forgiving Speed will serve you better than a stiff carbon racer. The fastest shoe on paper is not the fastest shoe for you if it leaves your calves wrecked.
Make a super-shoe last
Peba foams are light and lively but wear faster than dense EVA. Rotate your fast shoes with a more durable everyday trainer, keep them for the runs where they earn their keep, and you will get far more good kilometres out of the foam.
The short version
- ✓PWRRUN PB foam returns energy and resists fatigue, which is why the Endorphin feels fast over distance.
- ✓The plate stiffens the platform and the SPEEDROLL rocker rolls you forward. They work as a pair.
- ✓Start with the Endorphin Speed for training, step up to Pro or Elite only for racing.
- ✓Rotate super-shoes with a durable trainer to protect the foam and your legs.
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