We spent 7.9 hours reading reviews from experts and users. In summary, this is what runners think:

9 reasons to buy

  • The upper felt much more durable compared to the previous version, a reviewer wrote.
  • One user stated that the updated midsole of the Saucony Freedom ISO 2 helped keep the foot centered.
  • The shoe did not cause hot spots even with extended periods of wear, a runner noticed.
  • Many buyers commented that the shoe was lightweight.
  • The upper was very breathable, according to several wearers.
  • A lot of customers liked the design of the Freedom ISO 2.
  • There was adequate traction from the outsole, a number of runners remarked.
  • The shoe was extra supportive at the ankle area, said a reviewer.
  • The EVERUN™ midsole was responsive and springy as expected, one runner stated.

3 reasons not to buy

  • The Freedom ISO 2 ran large in sizing, claimed a couple of wearers.
  • The ride was not as stable as with the original version, a user expressed.
  • One commenter noted that the shoe was not as affordable as its predecessor.

Bottom line

According to many users, the Saucony Freedom ISO 2 was a well-crafted running shoe that offered an exceptional performance in a great-quality package. A lot of Saucony loyalists were pleased with the improvements made to the shoe. Overall, the majority stated the Freedom ISO 2 made their runs better, and that they genuinely enjoyed wearing the shoe.



A top rated Road running shoe
Top 6% most popular running shoes
It has never been more popular than this July
Better rated than the previous version Saucony Freedom ISO

Expert Reviews

85 / 100 based on 15 expert reviews

  • 79 / 100 |

    Saucony Freedom ISO 2 - A bit too much freedom

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    This is the first pair of Saucony running shoes that I’ve tried. But I had heard good things about the brand before.

    The Freedom ISO 2 is a neutral running shoe with a low drop of just 4 mm, with a forefoot height of 18 mm and a heel height of 22 mm. It only weighs 232 grams. 



    The Freedom ISO 2 is part of the ISO series, which are shoes that have Saucony’s ISO Fit. The ISO Fit wraps the shoe securely around the midfoot.

    I normally use the extra eyelet to tie my shoelaces, but I found that when I did that with the Freedom ISO 2, it created too much pressure on top of my foot. So, I tried lacing them one eyelet lower.

    Even then, I had some issues with finding the balance between the ISO Fit and the rest of the upper. If I locked down my foot, firmly the rest of the upper would fit better, but the ISO Fit system would create a bit too much pressure on my foot.

    If I loosened the laces a bit, the fit of the upper would be less secure. I never quite got the hang of it.  



    Saucony has used ISO Fit before in other models, and I’ve heard it works a bit differently in every model. Some might work better for your foot than others. But the Freedom ISO 2 now also has an upper which is made out of the new ISO Knit.

    The Freedom ISO 2 has a single layer knit upper, and that does make the upper quite breathable, but that will also mean you’ll easily get wet feet in wet weather conditions. 



    The shoe doesn’t have a full heel cup but a support frame, a supportive arch made out of quite flexible plastic, running along the top of the heel counter.



    The midsole consists of Saucony’s Everun material. It is a soft cushion, but it is also responsive. You sink into the midsole a little while running, which is the kind of cushioning that I like.

    Saucony has shoes that have the full Everun midsole and shoes that only have an Everun topsole, and the rest of the midsole is made out of EVA. The Freedom ISO 2 has the full Everun midsole.



    I like that the insole of the shoe has a performance contoured footbed. It is not a very thick insole, but it does do the trick. 


    The outsole is made out of Crystal Rubber, which provides both traction and durability.

    The traction of this shoe is indeed pretty good. The shoe does alright on easy trails, and I even managed to run in the snow with this shoe. 



    The Freedom ISO 2 is a low drop shoe. According to Saucony, this will result in you relying more on your natural gait and less on the cushioning and the stability of the shoe.

    I clearly noticed it when I started running in this shoe. I really needed to foam roll after my first run in the Freedom ISO 2.

    I’ve ran in the Skechers GoTrail Ultra 4 shoes before, which also have a 4 mm drop and are actually one of my favorite shoes, but I never had the feeling I needed to transition into those like I did with the Freedom ISO 2. 



    The Saucony Freedom ISO 2 has also been compared to the Hoka One One Elevon, although the Elevon is more of a maximalist shoe while the Freedom ISO 2 is more of a cushioned everyday running shoe.

    Both the Freedom ISO 2 and the Elevon are responsive shoes, but Saucony’s Everun in the Freedom ISO 2 has more of a springy feel to it than the Hoka Elevon. And the durability of the outsole of the Freedom ISO 2 is much better than that of the Elevon.

    The support frame on the heel together with the knit, sock-like upper do not provide enough stability. Just because the shoe has a low drop doesn’t mean you don’t need any stability.

    If I pinch the heel of this shoe, it can easily be pinched together. Something that I generally can’t do with the heels of other running shoes. 

    It is a responsive and cushioned ride, but it is not a maximalist shoe. It is more a springy everyday running shoe. It kind of reminds me of the Nike Pegasus Turbo in a way, but at the same time, it’s a very different shoe.

    The Saucony Freedom ISO 2 is something in between a racing shoe and a long distance shoe. It’s more suited for those short to medium distance training runs where you still want some ground feel, but also a little bit of cushioning. 



    I ordered the shoes half a size up from my normal running shoe size, just to be on the safe side since I’ve never worn Saucony before. But it turns out that wasn’t necessary, and I could have just gone with my normal size. 

    I also noticed that the plastic overlays on the front of the shoe seemed to differ in size between the two shoes, as if one was meant to be for a size larger shoe than the other (on the left shoe the overlay is almost a centimeter longer than on the right shoe).

    This could easily have been a manufacturing mistake. However, I could feel that the left shoe fit a bit differently than the right shoe. 



    I really like the Everun material for being soft yet responsive, although personally, I prefer a bit more of a maximal cushioning shoe. The Everun is maybe not as responsive as Nike’s ZoomX foam, but it is still pretty impressive.

    I also like the traction the Crystal Rubber outsole gives you. But I’m a bit less impressed with the upper of the Freedom ISO 2.

    It’s almost as if this shoe is actually two shoes in one; I really like the sole, but can’t come to terms with the unstable upper. I can’t really figure this shoe out.

    I really want to like this shoe, because I like the midsole material, but at the same time, there are so many things wrong with the upper. It’s a bit too much freedom for me, not in terms of bulk, but because of the instability of the upper. 

  • 90 / 100 |

    Saucony Freedom ISO 2: Solar Boost on Steroids

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    If you took the Adidas Solar Boost and made it more comfortable by removing the cage, adding in more plushness and a knitted material upper, the result would be the Freedom ISO 2.



    The Everun midsole is denser and firmer than Boost, but the Freedom has an Everun sock liner for added step-in cushioning.

    I ran in the Freedom ISO 1, and I can easily say that this version is an improvement in every aspect of the shoe. It overall feels more refined and elegant.

    The Freedom ISO 2 is not a fast shoe. Thus, so I use it for my daily trainer needs. It is bottom-heavy due to the weight of the Everun midsole. I find it too heavy to use for 5km distances or less.


    This shoe model has a luxurious upper. It is much better than the Freedom 1. The padding is thick, and the inside lining is smooth, which reminds me of Brooks’ uppers.

    The knit is comfortable and thick but not a soft-stretchy kind like Flyknit or Primeknit.

    The laces are very long, so I use the heel lock method to make them shorter.

    The heel is very padded, which feels “relaxed” but not loose. There is no heel slippage here. The tongue is also padded and does not slip around due to the sleeved interior.


    The crystal rubber outsole of the Freedom 2 is very durable. It is reminiscent of the Nike regrind rubber used on their Pegasus 32 and Odyssey shoes back in the good old days.



    In my opinion, it is the second most durable shoe rubber after Continental. The clear rubber is very dense and hard, taking away some of the shoe’s plushness.

    On dry surfaces, the outsole grip is sufficient. But, in wet weather, it gets slippery, and you have to run carefully.

    The pattern of the outsole provides a very smooth ride with not much ground feel due to the hardness of the crystal rubber.

    I expect this outsole to last longer than most shoes and to be fine after 800+ kms.


    If you took an Adidas Boost midsole and compressed it, you would get an Everun midsole. It feels like a faster midsole.

    There are two notches on the medial forefoot. These are not found in the previous version of the shoe.



    The medial forefoot is my favourite part of the shoe. It keeps your foot centered and gives you support on the medial side. It’s the first time I’ve ever seen this on a running shoe.

    Usually, the cup support is at the back of the shoe, around the heel. These notches make the shoe feel more stable by stopping your forefoot from rolling inward.

    Another big difference is that the midsole now flexes further forward than the Freedom 1. It used to flex slap bang in the middle of the shoe, which caused me some midfoot discomfort.

    The Freedom 2 flexes further up the shoe, just before the two notches.

    The ride is smooth, much smoother than an Adidas shoe. It is because the foam does not poke through the holes in the strobel lining underneath the insole.



    I enjoy the plush step-in feel from the Everun insole, and I enjoy the lack of mushiness.

    However, one does get the feeling that Saucony needs to update Everun sooner rather than later.

    It cannot match the other super foams like Zoom X, Floatride Energy or Hyperburst because it is not as springy and not as light.


    Overall, the Freedom ISO 2 is a very well rounded shoe. It has a comfortable upper, plenty of cushioning, plenty of responsiveness and a lot of stability.

    I would take this shoe over any Adidas Boost. It has more comfortable upper and smoother ride. Adidas Solar is more lifestyle-oriented and not as performance-oriented as  Freedom ISO 2.

    Meanwhile, the faster shoes such as the Boston/Adios are nowhere near the cushioning level the Freedom 2 has.

    My only complaint is the price. It is an expensive shoe compared to lighter options. These options such as Fresh Foam Beacon and Reebok Floatride Forever are just as cushioned as Freedom ISO 2. 

    I also miss the brightly coloured painted midsole of the original Freedom.

  • 86 / 100 | Runner's World | | Level 5 expert

    A full-length layer of Saucony’s Everun cushioning is what makes the Freedom feel so plush underfoot. A single layer of the foam keeps the shoe light and bouncy, but still provides enough support for longer runs. However, while our neutral-footed testers noted they felt secure in the shoe, runners who overpronate wanted a little more stability from a shoe like the Liberty. “I am used to running in a neutral shoe, so the support of the Freedom ISO 2 was exactly what I am used to,” one tester explained. “Someone who needs a more supportive shoe would probably find that this shoe would not have enough support for them.”

  • 82 / 100 | Believe in the Run | | Level 5 expert

    This shoe will be a lifestyle shoe in my collection. The Saucony Freedom ISO 2 feels fantastic for walking around and the black knit looks good enough for casual wear. If I were to recommend the Freedom ISO 2 to a runner, it would be to a lower mileage runner. I am not confident that the lack of support in the shoe is good for higher volume running. Feel free to prove me wrong.

Become an expert

  • The Saucony Freedom ISO 2 is an update to a fresh series that’s meant to provide an accommodating performance to neutral pronators. It makes use of a form-fitting design to sanction the natural movement capacity of the wearer’s foot.
  • ISOKNIT is the amalgamation of knitted textile and Saucony’s proprietary sock-like construction. It’s crafted to prevent skin irritation and hot spots while also bringing breathable support. A plastic support frame at the back of the shoe holds the heel and keeps it in place.
  • The midsole unit of the Freedom ISO 2 uses a foam compound that’s made to absorb impact shock and provide responsive cushioning. It has a contoured midfoot to support and cushion the arch, as well. A flexible rubber acts as a shield against the abrasive nature of the surfaces.

The Saucony Freedom ISO 2 makes use of the standard measurements to deliver a true-to-size coverage. The women’s version has a width option of B – Medium while the one for men features the D – Medium variant. The semi-curved shape of this running shoe’s last accommodates the natural curvature of the human foot.

The outsole unit makes use of the TRI-FLEX crystal outsole, a durable material that’s meant to protect the rest of the platform from wear and tear. It has a transparent look to heighten the visuals of the external layer. Though it’s protective, it’s not firm or inflexible.

Gripping lugs allow the external layer to hold onto the ground with sureness and ease. They’re not too prominent to cause surface instability.

Horizontal and vertical grooves permit the platform to bend in conjunction with the inherent flexing capacity of the foot.

The underfoot platform of the Saucony Freedom ISO 2 makes use of the EVERUN. This foam unit offers responsive cushioning. It’s also designed to absorb impact during the landing phase of the gait cycle, then converting that energy to kinetic force that the leg can use to push off the ground. The EVERUN material is also added into the midsole of the Guide 10, Hurricane ISO 5, and other popular running shoes from Saucony.

ISOKNIT is a material that’s designed to resemble woven textile. It has a closed construction in the vital areas, but the front and sides open up to accommodate airflow. It doesn’t have a substantial weight, and it obliges the natural flexibility of the wearer’s foot.

The ISOFIT dynamic fit system allows the upper to hug the foot precisely, giving a well-fastened yet unrestrictive wrap.

A support frame is placed on the back portion. It’s a band made of synthetic material. Its purpose is to keep the heel in place and prevent it from wobbling or exiting the foot-chamber involuntarily.

The padded collar and tongue provide cushioning to the upper parts of the foot. Moreover, they prevent in-shoe quavering.

Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.