The Saucony Endorphin Speed 5 is set to launch on 1st July 2025, promising thoughtful upgrades over its predecessor, the Endorphin Speed 4. Known for its versatility as a lightweight plated trainer, the Speed series continues to cater to both tempo runs and race day needs. Here's everything UK runners need to know before release day.
🆕 What's New in the Saucony Endorphin Speed 5?
🔹 1. Upgraded Engineered Mesh Upper for Breathability and Fit
The Speed 5 features a redesigned lightweight engineered mesh upper that offers better ventilation and a more adaptive fit compared to the slightly bulkier knit-mesh combo used in the Speed 4. This ensures a more secure and comfortable lockdown, especially for longer efforts.
🔹 2. Refined Midsole Geometry for a Smoother Ride
The shoe retains Saucony’s PWRRUN PB foam and winged nylon plate, delivering responsive cushioning and snappy toe-offs. New for the Speed 5 is a full-length longitudinal groove in the midsole, which enhances flexibility and allows for a smoother heel-to-toe transition.
🔹 3. Enhanced Outsole Durability and Grip
The outsole sees a strategic update with additional rubber coverage along the heel and lateral edges. This not only improves durability but also enhances grip on varied terrain — perfect for UK roads and summer races.
🔹 4. Specs & Fit
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Weight: ~238g (Men’s UK 9)
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Drop: 8mm
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Stack Height: 36mm heel / 28mm forefoot
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Fit: True to size with improved heel lockdown
🔄 Saucony Endorphin Speed 5 vs Endorphin Speed 4: Key Differences
| Feature | Endorphin Speed 4 | Endorphin Speed 5 |
|---|---|---|
| Upper | Knit + mesh blend | Lightweight engineered mesh |
| Midsole | PWRRUN PB + nylon plate | PWRRUN PB + plate + flex groove |
| Outsole | Targeted rubber coverage | Full perimeter rubber coverage |
| Ride Feel | Slightly rigid transitions | Smoother, more flexible ride |
| Fit | Roomy toe box, minor heel slip | Improved lockdown, better fit |
✅ Should You Buy the Saucony Endorphin Speed 5?
If you’re a fan of the Endorphin Speed 4, the Speed 5 will feel familiar — but better. It’s still one of the best carbon-plated running shoes for daily training and tempo sessions, now with thoughtful refinements in comfort, flexibility, and traction.
Ideal for:
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Runners seeking a plated trainer without the harshness of a full carbon plate
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Tempo sessions, long intervals, and even race day
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Those looking for a shoe that performs across a range of distances
🗓️ UK Release Date
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Release Date: 1st July 2025
📈 Final Verdict: A Smart Evolution, Not a Revolution
The Saucony Endorphin Speed 5 doesn’t reinvent the wheel — and it doesn’t need to. With subtle yet effective updates, it continues to shine as a do-it-all trainer for runners who want speed, comfort, and versatility. Expect it to rank among the top running shoes of 2025.
