Saucony
Endorphin Trainer Running Shoe - Women's
$99.99
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The Grivet Take
The Endorphin Trainer is Saucony's new max-cushion plated training shoe, slotted between the Speed and Pro lines as the long-run specialist. 41/33 stack with an 8mm drop, dual-layer IncrediRun (new soft top foam) over PWRRUN, and a 3/4-length carbon plate that provides smooth roll without locking out forefoot flex. Best for marathon training, long run days, uptempo workouts, and runners who want carbon-plate assist with daily-trainer cushion. The spacious upper accommodates high-volume and wider feet — a notable accessibility win for the carbon-plate category. Skip it for short speed work; the geometry is built for long miles, not 400m repeats.
Fit & Feel snapshot
Fit
LengthHow the shoe fits compared with true-to-size expectations.
True to size
Toe box widthHow much side-to-side room the shoe has across the front of the foot.4 of 5
NarrowWide
Toe box volumeHow much vertical room the shoe has above the toes.4 of 5
LowHigh
MidfootHow snug or roomy the shoe feels through the arch and laces.4 of 5
SnugRoomy
Heel holdHow securely the back of the shoe holds the heel.4 of 5
LooseLocked
Ride
CushionHow much material sits underfoot. This is about amount of cushioning, not how soft it feels.5 of 5
MinimalMaximal
SoftnessHow soft or firm the cushioning feels underfoot.4 of 5
FirmPlush
RockerHow much the shoe's shape rolls you forward through the step.4 of 5
FlatAggressive
ResponsivenessHow much pop or energy return the shoe feels like it gives back.5 of 5
DeadBouncy
Support
Support TypeSupport Type describes how much built-in guidance the shoe has. Neutral shoes do not add support structure. Stability shoes use geometry, rails, firmer foam, or frame designs to create a more guided feel. Motion control shoes are the maximum-support category and are rare in modern running.
Neutral
Stability
Motion Control
No added support structure
PlatformPlatform describes the width and shape of the shoe's base underfoot. A wider platform can feel steadier even when the shoe is neutral. This is separate from Support Type.
Standard platform
How it fits
Fits true to size with a notably spacious upper that accommodates high-volume and wider feet — uncommon at the carbon-plate price tier. Toe box is rounded with adequate vertical room; midfoot is roomy. Heel hold is secure. Available in Standard (B) only for women's, but the spacious last makes it work for many wider-footed runners.
How it feels
Cushion is at the top of the scale; new IncrediRun foam on top of PWRRUN delivers a soft, energetic ride that's smoother than the firmer PWRRUN PB used in the Speed and Pro lines. The 3/4-length carbon plate provides snap and roll through toe-off without the locked-out feel of a full plate. Aggressive forefoot rocker. Ride character: smooth long-mile cruiser with race-shoe responsiveness when you push.
Quick specs
- Category
- Marathon racer
- Surface
- Pavement · Treadmill
- Heel stackHow much shoe sits between your foot and the ground.
- 41.0 mm
- Forefoot stack
- 33.0 mm
- DropThe difference between heel height and forefoot height, measured in millimeters.
- 8.0 mm
- Weight (women's 8)
- 8.9 oz · 252 g
- CushionHow much material sits underfoot. This is about amount of cushioning, not how soft it feels.
- 5 / 5
- Support TypeSupport Type describes how much built-in guidance the shoe has. Neutral shoes do not add support structure. Stability shoes use geometry, rails, firmer foam, or frame designs to create a more guided feel. Motion control shoes are the maximum-support category and are rare in modern running.
- Neutral
- PlatformPlatform describes the width and shape of the shoe's base underfoot. A wider platform can feel steadier even when the shoe is neutral. This is separate from Support Type.
- Standard platform
- Midsole
- IncrediRun (top) + PWRRUN (bottom)
- Outsole
- rubber
- PlateA stiff layer, usually carbon, nylon, or TPU, built into some shoes to add structure, snap, or propulsion.
- 3/4-length carbon plate
- WidthsThe width options this shoe is made in. Actual availability depends on current inventory.
- B
Tech, translated
IncrediRun is Saucony's new midsole foam, used in the Endorphin Trainer as the top layer. Softer and more energetic than PWRRUN PB; tuned specifically for long-mile training comfort.
Dual-layer with PWRRUN bottom keeps the platform stable and durable while letting IncrediRun handle the cushion feel underfoot.
3/4-length carbon plate provides plate-assisted propulsion without the rigid forefoot of a full carbon plate. Good for long-mile training and shorter racing where you still want some forefoot flex.
Frequently asked
Does the Saucony Endorphin Trainer run true to size?
Yes, the Endorphin Trainer fits true to size for most runners. The upper is notably spacious — well-suited to high-volume and wider feet, which is uncommon at the carbon-plate price tier. Available in Standard (B) only for women's, but the roomy last works for many wider-footed runners.
How does the Saucony Endorphin Trainer compare to the Endorphin Pro 5?
Both have carbon plates, but they're built for different uses. The Endorphin Trainer has a higher stack (41/33 vs 39/31), the new IncrediRun foam over PWRRUN for a softer ride, and a 3/4-length plate that allows more forefoot flex. The Pro 5 has firmer PWRRUN PB foam and a full carbon S-Curve plate for race-day propulsion. Choose the Trainer for marathon training and long runs. Choose the Pro for race-day use.
Is the Saucony Endorphin Trainer firm or soft underfoot?
Soft and energetic. The new IncrediRun top foam is softer than PWRRUN PB, and the dual-layer with PWRRUN underneath keeps the platform stable. The 3/4-length carbon plate provides snap and roll through toe-off without the locked-out feel of a full plate. Smooth long-mile cruiser with race-shoe responsiveness when you push.
Is the Saucony Endorphin Trainer good for wide feet?
Yes, surprisingly. While Saucony only offers Standard (B) width in women's, the upper is notably spacious — built to accommodate high-volume and wider feet. Multiple reviewers explicitly praise the fit accessibility for the carbon-plate category. Wide-footed runners who couldn't fit in typical race shoes should give this a try.
Compare it toSimilar shoes or common alternatives, with the key fit and ride differences called out.
Saucony Endorphin Speed 4
Choose the Endorphin Trainer for max cushion and long-mile training with carbon plate. Choose the Endorphin Speed 4 for a lighter nylon-plated tempo trainer with snappier feel.
Compare Saucony Endorphin Speed 4 →
Saucony Endorphin Pro 4
Choose the Endorphin Trainer for daily training with plate-assist and IncrediRun cushion. Choose the Pro 4 for dedicated race-day use with the firmer race-foam stack.
Compare Saucony Endorphin Pro 4 →
Adidas Adizero Boston 13
Choose the Endorphin Trainer for higher stack and softer IncrediRun cushion. Choose the Boston 13 for a more versatile lower-stack tempo trainer with EnergyRods.
Compare Adidas Adizero Boston 13 →
Saucony Endorphin Azura
Choose the Endorphin Trainer for plate-assisted long-mile training. Choose the Endorphin Azura for the plateless versatile super-trainer that handles easy through tempo.
Compare Saucony Endorphin Azura →
Buyer's guide
Read our running shoes guide
A clear framework for picking running shoes by surface, cushion, drop, stability, and fit.
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