CoreScore breakdown
0 reviews · 0 expert tests
SauconyEndorphin Speed 4
Fast without the carbon tax.
Best for
Not ideal for
Verdict
The Saucony Endorphin Speed 4 is one of the top-rated shoes in its class — a speed trainer scoring 90/100 in SoleHunt's data-driven evaluation, drawing on 0 consumer reviews and 0 independent expert tests. Tipping the scales at 218g, it is notably lightweight for a speed trainer. The 35mm heel stack — a generous stack — delivers a plush and deeply cushioned ride at 25 HC, returning 74% of impact energy and feeling exceptionally bouncy underfoot. Geometrically, the Endorphin Speed 4 runs on a mid 8mm drop that works with most running gaits, with a 27mm forefoot stack that maintains the traditional heel-elevated geometry runners with tight calves often prefer. Fit-wise, the toebox measures 94mm — roomy, with space for wider feet and swelling on long runs — and the upper is available in B/D/2E widths. True to size. SpeedRoll geometry shifts stride efficiently. It is designed for tempo runs, race day, speed workouts, versatile training, and performs less well for recovery runs or plantar fasciitis.
Lab measurements
Weight
218g
UK size 9 men's
Heel drop
8mm
Moderate
Heel stack
35mm
Forefoot stack
27mm
Midsole hardness
25HC
Soft
Energy return
74%
Higher = bouncier
Toebox width
94mm
Breathability
82/100
Outsole grip
79/100
Flexibility
65/100
Heel counter
3/5
Ankle hold
Sustainability
22%
Recycled content
Fit guide
Sizing specs
Best for
Not ideal for
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Synthesized from common user reports via AI analysis. Confidence-weighted.
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