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Saucony Endorphin Speed 4 review

7 expert score
0 user's score
As editorial policy, we do not accept free samples. We purchased this pair at a store with our own money.
Review written on 03rd February by Brandon Law Marathon Runner and Shoe Expert
152 other reviews

Saucony Endorphin Speed 4 Verdict

The Saucony Endorphin Speed 4 is a flexible, plated trainer which is best suited to uptempo runs. It doesn’t offer as much speed assistance as other plated trainers but it has a natural ride with excellent traction. Version 4 feels faster than version 3 due to its firmer ride. It has a higher level of ground feel and a more streamlined design.

The pros

  • Excellent traction
  • More stability
  • Faster ride
  • Better agility

The cons

  • Still a very different ride to the Endo Pro
  • Colour bleeds onto the laces
  • Less cushioning

Where to buy

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Rating breakdown

Comfort
7.0
Build quality
7.0
Upper
8.0
Sole unit
7.0
Landing
7.0
Transition
7.0
Toe-off
7.0
Traction
8.0
Durability
7.0
Value / Price
5.0

Facts / Specs

Brand
Model
Endorphin Speed 4
Family
Previous model
Weight
8 oz (227 g)
MSRP
$170.00

Heel
37 mm.
Toe
29 mm.
Heel drop
8 mm.
Carbon plate
Plate in other materials

Size/Fit

Sizing
True to size
Heel fit
Normal
Midfoot fit
Normal
Toebox fit
Normal

Cushioning & ride

Type of cushioning
Responsive/balanced
Amount of cushioning
Medium cushioning
Stability
Some stability
Flexibility
Medium

Usage

Racing
Speedwork  
Daily training
Long distance racing
Ultra distance racing

Who should buy the Saucony Endorphin Speed 4 ?

If you prefer your speed trainers to have a flexible ride which makes you work harder, the Endorphin Speed 4 is a good option for you. It has enough cushioning for long distances and it has decent stability.

Who should not buy the Saucony Endorphin Speed 4 ?

If you want a similar ride to the Endorphin Pro 4, the Speed 4 is not the shoe for you. It has a much more flexible midsole which results in less propulsion.

Saucony Endorphin Speed 4 Introduction

Picture of Saucony Endorphin Speed 4

The Endorphin Speed has been one of Saucony’s most successful shoe releases of the last 3 years. It’s lightweight, it’s comfortable, and it’s well cushioned, but the main reason it sells so well is because it looks like its more expensive, carbon-plated counterpart, the Endorphin Pro. This latest version of the Speed looks even more like the Pro version.

The Endorphin Speed is designed to be the training companion of the Endorphin Pro but if you’ve run in both shoes, you would have noticed that they have very different rides.

They both use PWRRUN PB (PEBA foam) in their midsoles but the Speed is very flexible while the Pro is not.

That’s the reason why Saucony created the Kinvara Pro: a stiffer trainer which delivers a similar ride to the Saucony racers. I prefer using the Kinvara Pro over the Endorphin Speed for uptempo runs because it feels more propulsive and it provides more speed assistance.

In my opinion, the Endorphin Speed 3 felt more like an everyday trainer than a dedicated workout or racing shoe due to how flexible it was. It didn’t feel as fast as other training companions such as the Deviate Nitro 2, Asics Magic Speed 3 or the Hoka Mach X.

Many runners use the Endorphin Speed as their daily trainer– it’s more exciting than the Ride series and the Triumph series, and it’s much lighter than the average daily trainer. The Speed doesn’t have as much cushioning or as good durability though because it wasn’t designed to be a workhorse.

The Endorphin Speed 4 weighs exactly 8 oz (227 g), a mere 0.1 oz (3 g) more than the Speed 3. I predict its price will remain $170 when it launches in the first quarter of 2024. I paid $183 (including taxes and shipping) for my pair.

Saucony Endorphin Speed 4 First Impressions

Picture of Saucony Endorphin Speed 4

My first run was a hill sprints session. My first impression was that the Speed 4 felt faster than the Speed 3. There was more ground feel, the ride felt firmer and I could feel the forefoot rocker more than in the Speed 3.

I enjoyed that first run. The ride felt faster than a daily trainer but not as fast as a stiff, carbon-plated racer. This version felt more like a speed trainer than a relaxed daily trainer which I thought the previous version felt like.

It reminded me of the ASICS Magic Speed 3 because the Magic Speed 3 also felt leaner and more agile than its predecessor. Both the Endorphin Speed 4 and Magic Speed 3 have midfoot cavities underneath, on their outsoles and you can hear a clapping sound from the cavity when your foot strikes the ground.

Saucony Endorphin Speed 4 Upper

Picture of Saucony Endorphin Speed 4

The Endorphin Speed 4’s upper is an improvement over the 3. It feels thinner and more breathable. My favourite feature is the ventilation on the top of the toe box, the small holes that let more air in.

The thin, gusseted tongue also has small holes in it and it doesn’t slide around- it’s wider and it’s longer than v3. The collar and inner lining have a rough texture which feels scratchy and not very premium but heel lockdown is good.

Picture of Saucony Endorphin Speed 4

It fits true to size and it has a narrow toe box but you don’t need to go up a half size like in the Endorphin Pro 4. It does come in a wide version if you find it too narrow. The only thing I don’t like about the upper is that when it’s wet, the colour runs and stains the white tongue/laces.

Saucony Endorphin Speed 4 Sole Unit

Picture of Saucony Endorphin Speed 4

The Speed was designed to be a shoe for fast running (hence the name), and in order to make the Endorphin Speed 4 feel faster, Saucony has done 2 things: they’ve made the midsole firmer and made the forefoot rocker more aggressive. These 2 changes make transitions faster, so it’s easier to increase your pace.

I did mainly speed workouts in the Speed 4, ranging from marathon pace to 200 m interval pace and I enjoy this version much more than version 3 for uptempo paces. It feels like it has more punch. I prefer using the Speed 4 for fast-paced runs rather than easy/recovery runs. This was the opposite for the Speed 3.

When I wear the Endorphin Speed 4 on 1 foot and the Endorphin Speed 3 on the other foot, the 4 feels noticeably less bulky. Version 4 feels more streamlined and doesn’t feel as squishy underfoot- it feels leaner.

The midsole of the Speed 4 is about 10% firmer than the Speed 3. This results in better stability. The base also feels slightly wider than the Speed 3 so footstrikes feel more planted.

Picture of Saucony Endorphin Speed 4

I feel that the PWRRUN PB in the Speed 4 isn’t as good as other midsole foams. It doesn’t compress enough and doesn’t return enough energy. Hoka’s ProflyX and NB’s FuelCell are much more effective because they feel more engaging and more energetic. The Endo Speed has a flat ride in comparison.

One of the main differences between the Endorphin Speed and the other premium Saucony running shoes is that the Speed has an EVA insole. The Endorphin Pro, Triumph, Ride and Kinvara Pro all have PWRRUN+ (TPE) insoles which provide a plusher step in feel so the Endo Speed wouldn’t be my first choice for long runs.

There’s a flexible, winged nylon plate in the midsole of the Speed 4 which provides structure but it doesn’t provide much propulsion. Saucony needs to stiffen up the plate so that the forefoot feels more snappy. This will give it a more similar ride to the Endorphin Pro.

Picture of Saucony Endorphin Speed 4

Just like the Endorphin Pro 4, the outsole of the Speed 4 has also been improved. The forefoot rubber has a raised pattern which grips the ground more effectively so traction is better.

I used the Endo Pro 4 when it was raining and I didn’t have any issues when it came to traction. On the lateral heel, the rubber stops a couple mm short of the edge, so there is some scuffing of the midsole edge if you’re a heel striker but it doesn’t affect the ride.

Saucony Endorphin Speed 4 Conclusions

Picture of Saucony Endorphin Speed 4


When the original Endorphin Speed came out, it was something special. There was nothing like it on the market. I’ve tested a lot of speed trainers in the last 3 years and now, the Endorphin Speed 4 doesn’t feel special anymore.

There are plenty of competitors which can do what the Endorphin Speed can do but with a more engaging, more enjoyable ride. The Kinvara Pro, the Supercomp Trainer v2 and the Mach X are all trainers I would pick above the Endo Speed 4 because they feel more energetic and more modern.

Although the Speed 4 feels faster than its predecessor, it still doesn’t feel as fast as other speed trainers, mainly due to how flexible its plate is. The flexible plate also makes it feel completely different to the Pro 4, the racing version.

Picture of Saucony Endorphin Speed 4

I would however pick the Endorphin Speed 4 over the 3 because it feels more like a speed trainer now. Version 3 feels like a daily trainer. I think the majority of runners will prefer the 3 to the 4 because it has a softer, more cushioned ride which is preferable for daily training.

At $170, the Speed 4 is overpriced. The Deviate Nitro 2 is cheaper, as is the Magic Speed 3 and the Razor 4.

In the Saucony range, I would rather use an older version of the Endorphin Pro or pay $10 more for the Kinvara Pro for speed runs as their plates are stiffer. A stiffer plate results in more speed assistance.

How does the Endorphin Speed 4 compare?

Saucony Endorphin Speed 3
Saucony Endorphin Speed 4
Saucony Endorphin Pro 4
Expert score
8
7
8
User score
Best price
Retail price
US$170
US$170
US$225
Weight
8.10 oz
8 oz
7.4 oz
Heel Drop
8 mm
8 mm
8 mm
Recommended for
Racing, speedwork, daily training
Speedwork
Racing, speedwork
Cushioning type
balanced
responsive/balanced
balanced/plush
Cushioning amount
Highly cushioned
Medium cushioning
Highly cushioned
Flexibility
medium
medium
rigid
Stability
some stability
some stability
some stability
Sizing
true to size
true to size
buy half size bigger

Why you can trust us

As editorial policy, we do not accept free samples from companies.
We purchased this pair of Saucony at a store  with our own money.

This page contains affiliate links. As an Amazon Associate we earn from qualifying purchases. Read more about our policy.
Lowest price:

$170

Saucony Endorphin Speed 4 price comparison

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Reviewed by Brandon

This review was written by Brandon Law on 03rd February.
Brandon is a South African who lives and trains in Malaysia. He is a marathon runner who eats, sleeps and dreams running shoes. While most people wear shoes to run, he runs to wear shoes.

User feedback (14)

  • avatar-comment-1035438
    Andy
    1 week ago

    Hi, good review. how will theses hold up on light trails\gravel paths? Thanks

  • avatar-comment-1034809
    Nivek
    1 month ago

    Stupid “review”. This website is going down the crapper. How is it possible that Brandon purchased this shoe from Running warehouse in 2023 when they don’t even have it listed on their website? This is blatant misinformation.

  • avatar-comment-1034678
    Steve
    2 months ago

    When in 2024 will these be released? Have seen January 2024 and also April 2024

  • avatar-comment-1034585
    Riley
    2 months ago

    Looking forward to the review, how did you get your hands on a pair of saucony didn’t give you them?

  • avatar-comment-1034152
    Dave Walsh
    2 months ago

    Such an odd review. Comparing to the Pro 4 and simply rushing it out to be the first to talk about it. Embarrassing all round

    • avatar-comment-1034153
      Ruggero Loda
      2 months ago

      Hi Dave, this is not the review. You are reading an excerpt of 2/3 sentences and a list of pros/cons.
      The full review (we will re-release it soon) has tons of comparisons to the Speed 3 and other similar shoes.

  • avatar-comment-1033967
    Milken
    3 months ago

    Is there any intel on when the shoe is launching? Thanks!

  • avatar-comment-1033880
    Steve
    3 months ago

    Seems like you left your review up, even though you said you were going to comply to Saucony’s request to wait for the launch. I will wait to rate the review

    • avatar-comment-1033904
      Ruggero Loda
      3 months ago

      Hi Steve! Thanks for your comment. The review is not there! We deleted 1,200 words of actual review, all is left is picture and some data. We will be re-posting it complete, soon!

  • avatar-comment-1033851
    BFull
    3 months ago

    I don’t understand why you keep comparing it to the ride of the Pro 4. They’re different use cases so why would you want them to have the same ride? If you want the stiffness of the Pro 4, buy that one. Weird review.

    • avatar-comment-1035038
      Tyler
      4 weeks ago

      I find this info to be relevant. I’m a heavy runner, and having a stiff shoe is important to me. As soon as I read that it was more flexible than the pro I started to re-evaluate if these would be the right shoe for me. Looking forward to the full review, and will now need to also read the review for the pro to decide if maybe that’s a better option for my tempo days even though it’s not marketed for use as a trainer..

    • avatar-comment-1033952
      Steffo
      3 months ago

      Completely ridiculous review, like most of his others.

    • avatar-comment-1033881
      Jamie
      3 months ago

      This.

Lowest price:
$170

Where to buy

Best offers today in United States, all prices in USD
Sorry - Product not found. Please try RunningWarehouse.Com to check in their assortment.
This page contains affiliate links Read more

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