The Saucony Endorphin Speed 4 is one of the most anticipated running shoes of 2025, building on the success of its predecessors. Known for its versatility, the Endorphin Speed series has become a favorite among runners who want a shoe that can handle everything from daily training to race-day performance. The Speed 4 continues this legacy with key updates that enhance its performance, comfort, and durability. In this in-depth review, we’ll break down everything you need to know about the Saucony Endorphin Speed 4, from its performance on the road to how it compares to other top running shoes.
Our Verdict
The Saucony Endorphin Speed 4 builds upon its predecessor with a refined design that caters to runners looking for a versatile, high-performance shoe. Offering an excellent balance of cushioning, responsiveness, and lightweight construction, this model is an ideal pick for those who need a shoe that can handle daily training, tempo runs, and even race days. Saucony has fine-tuned the PWRRUN PB midsole and nylon plate to provide an enhanced smooth ride with better energy return, making it a top-tier option in its category. While it may not be as rigid as a full-carbon-plated racer, its flexibility makes it more forgiving for extended wear.
| Pros | Cons |
| Remains lightweight | Slightly heavier than predecessor |
| Excels at all paces | Could be a bit firm for some |
| Great for track workouts | |
| More spacious fit | |
| Bouncy and enjoyable ride | |
| Enhanced stability over v3 | |
| Suits daily training | |
| Exceptional value |
Our Analysis and Test Results
The Saucony Endorphin Speed 4 impressed us with its smooth, responsive, and lightweight feel. It provides a perfect mix of comfort and speed, making it ideal for runners of all levels. The PWRRUN PB cushioning ensures a soft yet energetic ride, while the nylon plate adds just the right amount of stability without feeling too stiff. The breathable upper keeps your feet cool, and the shoe’s overall fit is snug yet comfortable. Whether you’re running short sprints or long distances, the Speed 4 delivers a fantastic performance with every step.
Performance Comparison
The Saucony Endorphin Speed 4 stands out in the crowded running shoe market due to its exceptional versatility. Compared to other top trainers like the Nike Zoom Fly 5 and Adidas Adizero Boston 12, the Speed 4 offers a better mix of lightweight agility and midsole support. Its improvements over the Speed 3 are noticeable in both comfort and stability.The Speed 4’s lighter weight and flexible nylon plate make it a better choice for training, while the Zoom Fly 5’s carbon-fiber plate leans more toward race-day rigidity. Meanwhile, the Adizero Boston 12 provides a firmer ride that suits speed workouts but lacks the plushness for longer distances.
| Category | Rating (Out of 10) |
| Versatility | 9.2 |
| Responsiveness | 9.5 |
| Comfort | 8.7 |
| Support | 7.9 |
| Traction | 7.3 |
| Stability | 8.1 |
| Water Resistance | 6.8 |
| Weight | 9.6 |
| Durability | 8.5 |
| Price | 7.4 |
| Overall Rating | 8.5 |
Landing Comfort
One of the biggest strengths of the Saucony Endorphin Speed 4 is its landing comfort. The PWRRUN PB cushioning system offers a soft yet responsive ride, absorbing impact well without feeling overly squishy. Compared to previous versions, the updated foam formulation provides a smoother heel-to-toe transition, making it more forgiving on long-distance runs.
For runners who prefer a plush yet energetic underfoot feel, the Speed 4 is an excellent option. The cushioning rivals that of top-tier daily trainers while maintaining a level of snappiness that enhances speed sessions.
Responsiveness
The Speed 4’s responsiveness is one of its standout features. The combination of PWRRUN PB foam and a winged nylon plate creates a propulsive feel that’s perfect for tempo runs and interval training. While it doesn’t offer the same level of stiffness as a carbon-plated shoe, the nylon plate provides enough structure to enhance energy return without feeling overly rigid.
Runners have noted that the Speed 4 feels faster and more aggressive than its predecessor, the Speed 3. The updated midsole geometry and firmer foam contribute to a snappier ride, making it a better choice for speed-focused workouts.
Stability
The Saucony Endorphin Speed 4 is a neutral shoe, but it includes several features that enhance stability. The wider platform and flared heel provide a more secure landing, while the nylon plate helps guide the foot through the gait cycle. The midfoot and forefoot are slightly wider than previous versions, offering better stability for runners with a neutral gait.
However, the shoe’s high stack height and soft foam may not be ideal for runners who need additional support for overpronation. For those runners, a stability shoe like the Brooks Adrenaline GTS 24 might be a better option.
Upper Comfort
The engineered mesh upper on the Speed 4 is breathable and lightweight, providing a snug but comfortable fit. Compared to the previous model, the redesigned upper offers better lockdown without creating pressure points.
The tongue is thin but padded, and the heel collar has a secure fit without excessive stiffness. The toe box provides a moderate amount of room, making it suitable for runners with standard to slightly wider feet. However, those with very wide feet might find the fit a bit narrow.
Weight
Weighing approximately 8.1 ounces (Men’s 9), the Speed 4 remains one of the lightest daily trainers on the market. The combination of minimal overlays, lightweight foam, and a streamlined upper keeps the shoe fast and efficient.
For runners looking to reduce fatigue during longer runs or races, the Speed 4 offers an excellent weight-to-performance ratio.
Traction
The XT-900 rubber outsole provides decent traction on both dry and wet pavement. While it’s not designed for technical trails or extreme weather conditions, it holds up well on standard road surfaces and tracks.
Compared to some competitors, the Speed 4’s outsole durability is slightly lower, as the rubber coverage is minimal to keep weight down. However, for midfoot and forefoot strikers, the wear pattern should remain even over time.
Should You Buy the Saucony Endorphin Speed 4?
The Saucony Endorphin Speed 4 is an excellent choice if you’re after a versatile and responsive training shoe. It offers a lightweight feel, enhanced stability, and a bouncy ride that works well for both speed workouts and daily runs. However, if you prefer a softer, more cushioned feel or are sensitive to a firmer midsole, it’s a good idea to try them on first. Overall, if performance and value are your priorities, the Endorphin Speed 4 is worth considering.
What Other Running Shoes Should You Consider?
The Saucony Endorphin Speed 4 is loved for being light, fast, and comfortable—ideal for everyday runs and quick workouts. If you need a speedy, bouncy ride, it’s a top choice. Other great options include the Saucony Endorphin Pro for races, the Kinvara 13 for a natural feel, the Nike ZoomX Vaporfly Next% 2 for extra speed, the soft Hoka One One Clifton 9 for long runs, and the Adidas Ultraboost 22 for daily comfort.
Where you Buy
- Saucony Official Website
- Amazon
- Running Warehouse
- Zappos