Our verdict

The Endorphin Speed 3 from Saucony is one hell of a shoe! We affirm that it's energetic, stable, and light; it ticks all the important boxes of a zapatillas de running Saucony trail ritmo medio apoyo talón talla 36 grises. Even more, it can be your do-it-all trainer. From easy days down to the faster, more competitive race days, we are able to count on this Saucony trainer.

Saucony Guide ISO 2 Pros

  • Peppy all the way
  • Comfy for easy days
  • More stable than ever
  • The Saucony Grid Web is perfect for those who
  • saucony guide 14 vs adidas ultraboost
  • Lightweight
  • zapatillas de running Saucony hombre talla 39.5
  • saucony kinvara 7 nyc marathon
  • Fit is amazing
  • Grippy on dry and wet roads

Saucony Guide ISO 2 Cons

  • Rubs the heel
  • Not for narrow feet
  • No reflective details

Audience verdict

89
Great!

Who should buy

Definitely grab a pair now if you want a: 

  • You will love The Saucony Excursion TR 13 if,
  • running shoe that's also cushy and stable for daily runs and long miles.

The Endorphin Speed 3 is a one-stop shop that can take you from a daily workout to a race!

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 profile photo

Who should NOT buy

Everything about the Saucony Speed 3 gets a thumbs up from us, save for the heel counter. It's less padded, which is slightly abrasive to the heel. You can stock up on the bandaid or consider Saucony Kinvara 14.

However, if you're head over heels in love with the Saucony Endorphin series but want a comfier heel wrap, it's best to stick with the Saucony Shadow 6000 XLD St. It's also a great alternative for those with slim feet.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 lab view

Cushioning

Saucony Guide ISO 2 | Heel stack

With the amount of cushioning that it packs, the zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 is a mile eater. And a very good one too! 

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 heel stack height

Even though our calliper shows an average amount of stack height (34.1 mm in the heel), it definitely feels like plenty on the run.

Important note: the brand advertised slightly different numbers. The shoe is supposed to have 36 mm for the heel stack height.

Test results
Endorphin Speed 3 34.1 mm
Average 34.2 mm
Compared to 403 running shoes
Number of shoes
22.5 mm
Heel stack
46.3 mm

Forefoot stack

As for the forefoot stack, our calliper returned 26.7 mm which is over 2 mm thicker than average!

Saucony Mens Shadow Original in Beige White.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 forefoot stack height

Test results
Endorphin Speed 3 26.7 mm
Average 25.6 mm
Compared to 403 running shoes
Number of shoes
13.7 mm
Forefoot stack
37.1 mm

Drop

At 7.4 mm, we found the shoe's heel-to-toe drop to be close to the official specs (8 mm). This is a middle-of-the-pack drop that works great for both beginner and seasoned runners.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 drop

Test results
Endorphin Speed 3 7.4 mm
Average 8.6 mm
Compared to 403 running shoes
Number of shoes
-0.2 mm
Drop
16.1 mm

Midsole softness

Note: a low durometer measurement equals a soft material, whereas a high measurement means it's firm.

The Endorphin Speed 3 also gets comfier than its predecessor. There is a gentle give in the shoe's midsole and it works better for easy days too!

Turning to our durometer, we found that the shoe's foam is in fact in the top 10% of the softest in our lab!

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 midsole softness

With a reading of 13.8 HA, the Endorohin Speed 3 is on par with shoes like ASICS Novablast 3 (13.5 HA) and the PUMA Deviate Nitro Elite 2 (13.9 HA).

Test results
Endorphin Speed 3 13.8 HA
Average 20.9 HA
We use an average of four tests. The photo shows one of those tests.
Compared to 330 running shoes
Number of shoes
8.5 HA
Midsole softness (soft to firm)
35.0 HA

Midsole softness in cold (%)

It was incredible to find out that the Endorphin Speed 3 remains soft even after 20 minutes in the freezer!

At room temperature, our durometer showed 13.8 HA and after the freezer, it only firmed up by 5%(!) becoming 14.5 HA.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 freezer

Even after being exposed to the cold, the shoe remained 65% softer than other shoes at room temperature.

Test results
Endorphin Speed 3 5%
Average 25%
Compared to 330 running shoes
Number of shoes
0%
Midsole softness in cold
63%

Insole thickness

Measuring the shoe's insole, we found it to be slightly thinner than average at 3.6 mm. But this is still quite padded for a tempo trainer - no need to be concerned with underfoot comfort.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 insole

Test results
Endorphin Speed 3 3.6 mm
Average 4.4 mm
Compared to 399 running shoes
Number of shoes
1.5 mm
Insole thickness
7.3 mm

Saucony Guide ISO 2 | Ride

This time around, the Endorphin Speed 3 comes back with more bounce and a snappier toe-off which makes picking up the pace so easy!

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 run trails

The shoe lives up to our high expectations left by the previous Speed 2.

And this is not just because it's a shoe that has speed written all over it. It's also because the nylon plate it has (responsible for the snappy toe-off) doesn't feel harsh. Compared to other Saucony Xodus Iso Blue Black-Citron, Saucony Guide ISO 2.

At the same time, the shoe hasn't lost its bounce either. So you can still push the pace and go as fast as you want.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 mid run

What's more, in this iteration, the shoe's Speedroll rocker geometry is very noticeable. Each step feels as if the foot is carried forward. Love it!

Size and fit

Size

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 is true to size (84 votes).

Owners of this shoe, how does this shoe fit?

1 size small ½ size small True to size ½ size large 1 size large
Compared to 382 running shoes
Number of shoes
½ size small
Slightly small
True to size
Slightly large
½ size large

zapatillas de running Saucony mujer pronador pie normal

Even though the Speed 3 is only average in the widest part of the forefoot (98.5 mm), it feels roomier because of the stretchy nature of its fabric. The latter makes the shoe feel much more accommodating in the toebox.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 toebox width

We believe that Saucony absolutely nailed the fit of the Endorphin Speed 3! The upper does a really great job mimicking the natural shape of the foot. 

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 profile

Test results
Endorphin Speed 3 98.5 mm
Average 98.5 mm
Compared to 370 running shoes
Number of shoes
91.6 mm
zapatillas de running Saucony mujer pronador pie normal
104.9 mm

Stability

Lateral stability test

This Saucony shoe doesn't feel very stable and it's not supposed to. As a tempo trainer, its primary task is to keep you on your toes as you smash that remoteness training or chase that new personal best.

There is not much stability to lean on when you decide to slow down.

Torsional rigidity

Another detractor from the shoe's stability is its high level of torsional flex.

Performing a manual test, we rated the Endorphin Speed 3 with only 2 out of 5 for torsional rigidity. That puts the shoe on the more flexible side of the spectrum.

Test results
Endorphin Speed 3 2
Average 3.4
Compared to 382 running shoes
Number of shoes
1
Torsional rigidity
5

Heel counter stiffness

saucony fastwitch 9 zapatillas de running RSCSA.

This is the ONLY complaint we have for the zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3. The shoe's heel is a tad bit uncomfortable and scratchy because it has minimal padding.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 heel area

This is definitely due to the choice of materials because the heel counter itself is very soft, it scored 2/5 on our flexibility tests (5 being the stiffest). 

Кроссовки saucony sapphire 38р оригинал.

Test results
Endorphin Speed 3 2
Average 2.9
Compared to 366 running shoes
Number of shoes
1
Heel counter stiffness
5

Solebox x Saucony Shadow 5000 Onemesh

We also found that the Endorphin Speed 3 runs slightly narrow in its platform.

The widest part of the forefoot turns out to be 111.5 mm, 1.5 mm narrower than average. But the good news is that it's not so critical and the brand did its homework to improve the 3rd iteration.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 midsole width forefoot

Test results
Endorphin Speed 3 111.5 mm
Average 114.1 mm
Compared to 404 running shoes
Number of shoes
102.2 mm
Solebox x Saucony Shadow 5000 Onemesh
126.9 mm

Sneakers SAUCONY Shadow Original S1108-821 Red Purple

The Speed 3 is proof that Saucony really listens to runners' feedback. In the past, the Endorphin Speed's weak point was its lack of heel stability.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 width midsole heel

But this model changes all this. Based on our calliper measurements, the shoe's base has been widened by 5 mm in the heel.

Test results
Endorphin Speed 3 89.5 mm
Average 90.6 mm
Compared to 404 running shoes
Number of shoes
70.8 mm
Sneakers SAUCONY Shadow Original S1108-821 Red Purple
106.6 mm

Flexibility / Stiffness

As our manual flexibility test shows, the Endorphin Speed 3 leans toward the flexible side. But let’s see what the lab numbers say. In this test, we bend the shoe to a 30-degree angle with our custom-made machine to measure the force required.

Turns out, this Saucony model only needs 10.5N—far below the average for road shoes. It also confirms that the nylon plate in the midsole is noticeably more forgiving than a carbon one.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 Flexibility / Stiffness
Test results
Endorphin Speed 3 10.5N
Average 15.6N
Compared to 124 running shoes
Number of shoes
4.6N
Flexibility <> Stiffness
28.5N

Weight

release reminder pys x bait x saucony shadow 6000 blue apple.

But the Endorphin Speed 3 beats that by weighing only 212 grammes/ 7.5 ounces! This is exceptionally light given how much cushioning this Saucony shoe has!

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 scale

Test results
Endorphin Speed 3 7.94 oz (225g)
Average 9.38 oz (266g)
Compared to 404 running shoes
Number of shoes
5.61 oz (159g)
Weight
12.59 oz (357g)

Breathability

From double-layer mesh to single-layer mesh, this speedster is airy AF. If you plan to use it in the summer, we have nothing else to say, but lace it up! 

This Saucony shoe gets a solid 4 out of 5 for breathability based on our lab tests and on-road experience.

Test results
Endorphin Speed 3 4
Average 3.8
Compared to 333 running shoes
Number of shoes
1
Breathability
5

Durability

Outsole hardness

As a speed-oriented shoe, it is expected that the Endorphin Speed 3 cuts corners on the outsole's durability.

Not only do we see less rubber at the bottom, but we also found it to be softer than average with he help of a durometer.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 outsole hardness

If you don't mind sacrificing 0.6 oz of weight in return for a sturdier outsole, we can highly recommend the ASICS Novablast 3 tempo trainer.

Test results
Endorphin Speed 3 77.0 HC
Average 79.7 HC
We use an average of four tests. The photo shows one of those tests.
Compared to 384 running shoes
Number of shoes
56.1 HC
Outsole hardness
93.0 HC

Outsole thickness

The rubber is not only softer, it is also thinner in this Saucony shoe. Our calliper shows only 2 mm of rubber which is a millimetre thinner than average.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 outsole thickness

Test results
Endorphin Speed 3 2.0 mm
Average 3.2 mm
Compared to 401 running shoes
Number of shoes
1.0 mm
Outsole thickness
6.0 mm

Misc

Grip / Traction

The outsole has plenty of traction and plenty of durability too! We felt safe at all times, even on wet asphalt passages. And during fast corners, the grip doesn't compromise. 

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 outsole

Tongue padding

There is also a moderate amount of tongue padding - 3.9 mm, based on our calliper measurement. It is 2 mm thinner than the average but is just perfect for a tempo shoe. 

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 tongue thickness

Test results
Endorphin Speed 3 3.9 mm
Average 5.8 mm
Compared to 401 running shoes
Number of shoes
0.4 mm
Tongue padding
14.2 mm

Tongue: gusset type

The shoe's secure wrap is also complemented by its semi-gusseted tongue and padded laces. They work so well together; getting a solid lockdown won't be a challenge in the Speed 3.

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 laces

Test results
Endorphin Speed 3 Both sides (semi)

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 vs. 2

This version of the Endorphin Speed doesn't go through a lot of changes, which is why runners continue to rave about it. It has minor touch-ups, which make it an even better version: 

  • The wider toebox and thinner, stretchier upper for a more precise fit and a breathable running experience 
  • More stability in the forefoot and heel because of the widened base 
  • A new plate for a snappier toe-off
  • Stripped-down heel padding to minimise the bulk as much as possible  

zapatillas de running Saucony constitución media ritmo bajo pie normal talla 43.5 3 soft cushion