Saucony Endorphin Pro 4 vs Mizuno Wave Rebellion Pro 2: Two Very Different Race Shoes

Introduction

Some race shoes aim to be everything for everyone. Others take a wild swing at a specific running style and either click brilliantly or leave you baffled. The Saucony Endorphin Pro 4 and the Mizuno Wave Rebellion Pro 2 sit firmly on opposite ends of that spectrum, and comparing them reveals a lot about where super shoe design is heading.

The Headline Numbers

The Saucony Endorphin Pro 4 costs £230 or $225, weighs 221g (7.8oz) for men in a size 8, and has an 8mm drop. The Mizuno Wave Rebellion Pro 2 costs £210 or $250, weighs 214g (7.5oz) in the same sizing, with a strikingly low 1.5mm drop.

Both are true super shoes with carbon-based plates and aggressive foam stacks, but everything else about how they ride could not be more different.

Saucony Endorphin Pro 4: The Accessible All-Rounder

The Endorphin Pro 4 builds on the hugely popular Endorphin Pro 3 with a new dual-density midsole. The top layer uses the bouncier PWRRUN HG foam from the Endorphin Elite, while the bottom layer keeps the PWRRUN PB foam of the Pro 3. Saucony has also added a new sock liner for extra bounce, an updated PWRTRAC outsole rubber for grip, a lighter mesh upper aimed at better breathability, a slightly modified heel, and the same Speedroll geometry that made the line famous.

In practice, the new HG layer adds a touch of firmness that helps when picking up the pace. It feels poppier than the Pro 3 at faster efforts, though runners who loved the softer, more balanced cruise of the Pro 3 may notice a little of that comfort has been traded away. It is still one of the most natural-feeling super shoes available: it never forces your foot into anything, and it stays comfortable and accessible for almost any type of runner. For anyone stepping into their first carbon-plated shoe, this is about as safe and likeable an entry point as it gets.

Mizuno Wave Rebellion Pro 2: The Trampoline

Mizuno says the Wave Rebellion Pro 2 is designed for elite-level runners targeting a sub-2:30 marathon, and the shape makes its ambition obvious. The bulk of the midsole foam sits in the middle of the shoe, with a dual-layer construction: a more responsive Mizuno Energy Lite layer below and a softer, bouncier Mizuno Energy Lite Plus above, with more of it than the original. Updates include a redesigned carbon fiber wave plate, a slightly wider base for stability, the removal of the cutout midsole section from the first version, a roomier upper, and an impressive layer of G3 outsole rubber.

That radical midsole makes the shoe massively dependent on how you land. Land on the highest point of the midsole at quick turnover and it genuinely feels like a trampoline, tipping you forward with every step. Slow down, run uphill, or strike toward the heel and the magic largely disappears. Over a hilly half marathon at a steadier pace, the shoe can actually work against you. For 5Ks, 10Ks and interval sessions at fast pace, however, it is one of the most fun shoes out there.

Grip, Stability and Fit Notes

Both outsoles impress in the wet. The updated outsole rubber on the Endorphin Pro 4 grips reliably with no issues on damp ground, and the G3 rubber on the Wave Rebellion Pro 2 feels equally confident over wet surfaces.

Stability is where the two diverge sharply. The Endorphin Pro 4 stays balanced and predictable. The Wave Rebellion Pro 2, with its high stack and unusual center-heavy design, is simply not the most stable shoe, and Mizuno’s fit quirks compound that: there is limited padding around the heel, and nailing a lockdown fit takes some effort at first. The forefoot runs on the roomy side of super shoes, which is worth noting if you have narrower feet. Getting that lockdown right matters, because a loose fit in an unstable chassis makes for a precarious ride. The Endorphin Pro 4, by contrast, fits true to size with plenty of forefoot space and an easy, comfortable lockdown.

Which One Should You Buy?

There is no single winner here, because these are two very different shoes for two very different runners. The Endorphin Pro 4 is the safest bet: comfortable, natural, easy to adapt to, and at its best when you run faster. It lacks the eye-popping propulsion of something like the Nike Alphafly range, and veterans of those shoes may find it slightly underwhelming, but you can genuinely use it for almost any type of run. The Wave Rebellion Pro 2 is a risky, exhilarating shoe that only rewards runners whose stride lands in the right place. If your mechanics match, it is brilliant fun; if not, it can feel awkward and unstable, so it is well worth trying on before committing.

If you want a shoe you can race confidently without thinking about it, the Endorphin Pro 4 is the pick. If you want to chase something innovative and you know your running style suits it, the Wave Rebellion Pro 2 is worth a look.

Conclusion

The Endorphin Pro 4 is the dependable, versatile super shoe that most runners can buy without hesitation. The Wave Rebellion Pro 2 is the wild card: exceptional for fast 5K and 10K work if your stride fits its design, but a genuine gamble for everyone else.