The Endorphin Speed remains the bridge between a daily trainer and a carbon racer. Saucony pairs resilient PWRRUN PB foam with a semi-rigid nylon plate and SPEEDROLL geometry, producing a shoe that feels assisted at pace without the unforgiving stiffness of a full race setup.
Endorphin Speed 5
A polished fast-day trainer with enough comfort and flexibility to handle ordinary mileage. The nylon plate guides rather than dominates the stride, though the shoe is now slightly bulkier and more expensive than the lean early versions that built its reputation.
The bottom line
A polished fast-day trainer with enough comfort and flexibility to handle ordinary mileage. The nylon plate guides rather than dominates the stride, though the shoe is now slightly bulkier and more expensive than the lean early versions that built its reputation.
Ride and cushioning
The foam compresses readily and returns energy quickly, while the plate keeps the forefoot transition organised. Easy pace is possible because nylon flexes more naturally than carbon, but the shoe makes the most sense once cadence rises. Long-run protection is strong, and the rocker reduces the effort of holding rhythm late in a session.
Fit and upper
The upper is airy, secure and more accommodating around the toes than earlier generations. Lockdown is precise enough for intervals without demanding aggressive lacing. Standard and wide versions broaden its audience, though the fitted midfoot still feels more like a performance trainer than a relaxed cruiser.
Stability, grip and durability
The plate adds torsional structure and the geometry is stable enough for a fast shoe, but this is still a neutral model. It does not replace a guidance shoe for runners who need support. Rubber placement gives dependable road traction, though durability is not the headline strength of this generation.
Best uses
It excels at tempo runs, threshold repetitions, marathon-pace blocks and progressive long runs. Many runners can also race in it, especially if carbon plates feel too rigid. It can absorb daily mileage, but pairing it with a simple easy-day shoe preserves both its purpose and its foam.
Trade-offs
Version 5 is more substantial than the earliest Endorphin Speeds and no longer feels like an obvious bargain. Runners who want maximum agility may prefer a lighter unplated option. Those who only run easy miles are paying for a plate and geometry they may rarely use.
Key specifications
Terrain: Road
Support: Neutral
Cushioning: High
Plate: Composite
Weight: 237 g
Heel-to-toe drop: 8.0 mm
Stack: 36.0 mm heel / 28.0 mm forefoot
Widths: Standard, Wide
Alternatives to consider
Choose the EVO SL for a lighter plate-free experience, the Puma Deviate NITRO 4 for stronger wet grip and a carbon plate, or the Boston 13 for a firmer and more durable workout platform.
How we reviewed it
This is a Shoe Feed research review, not a claimed hands-on wear test. We synthesised the manufacturer's current specifications with independent RunRepeat lab findings, then evaluated where the shoe fits in the current training market. No first-hand test distance is reported.
