Endorphin Pro 4

With a legacy firmly established at the front of the marathon racing pack, the Saucony Endorphin Pro 4 arrives not just to continue the streak—but to widen the gap. This fourth edition holds true to the formula that made it beloved by elites and ambitious amateurs alike, while integrating a critical upgrade that transforms its race-day feel.

The major evolution is the introduction of PWRRUN HG, Saucony’s pinnacle superfoam, positioned as the top layer of the midsole for immediate high-rebound sensation underfoot. Carried within the proven PWRRUN PB superfoam chassis, the HG layer remains stabilized and durable, allowing runners to enjoy maximum energy transfer without sacrificing control late in the race. Sandwiched between the two foams, the full carbon plate works in perfect sync with Saucony’s signature SPEEDROLL geometry, producing a rolling, propulsive ride that feels smooth, efficient, and relentlessly fast from the first mile through the final push.

Beneath it all, the latticed forefoot rubber layout reduces weight while maintaining aggressive grip, supported by minimal heel coverage for stability on sharp turns and wet road segments. Up top, the refined race mesh upper delivers security without distraction, highlighted by an integrated tongue that improves lockdown and eliminates pressure during high-effort pacing.

In total, the Endorphin Pro 4 stands as Saucony’s clearest leap yet toward sustainable top-end racing performance—lighter, livelier, and more marathon-ready than ever. If you’re hunting efficiency at pace and the smoothest race-day rhythm Saucony has built to date, the Pro 4 is poised to take you there.

MIDSOLE

• PWRRUN HG superfoam cushioning is strategically placed directly underneath the foot to offer optimal rebound.
• PWRRUN PB superfoam cushioning makes up the majority of the midsole and continues to deliver the lightweight and responsive ride that it's known for.
• Super Responsive Sockliner (SRS) offers an additional layer of supercritical foam cushioning.
• Full-length carbon fiber plate delivers the perfect amount of pop and burst.
• SPEEDROLL Technology is a blend of max cushioning and speed geometry that allows you to run faster, not harder.

OUTSOLE

• XT-900 rubber offers excellent traction without adding excess weight.

UPPER

• Race-ready design is minimal and refined to strike the optimal balance between comfort and performance.