Saucony Kinvara 9 vs. Saucony Liberty ISO review

Saucony Kinvara 9 is good for performance runs by runners who want to feel light and fast. Saucony Liberty ISO brings you closer to a neutral plane and adds stability to your runs.

The Saucony Kinvara 9 and the Saucony Liberty ISO fall in two different categories of running shoes, with the Saucony Kinvara 9 being a neutral cushioning running shoe and the Saucony Liberty ISO a stability running shoe.

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Differences between the Saucony Kinvara 9 and the Saucony Liberty ISO start in the upper, where the Saucony Liberty ISO The preceding link takes you to Amazon.com comes with ISOFIT, but the Saucony Kinvara 9 does not.

The upper of the Saucony Kinvara 9 The preceding link takes you to Amazon.com has been kept quite light and there are some no-sew overlays running across the midfoot and at the front of the running shoe.

Other than that, there is a woven area around the heel for extra support and the forefoot is quite open and free from overlays, except for the Saucony logo partially running at its side.

The forefoot of the Saucony Liberty ISO is also quite open and free from overlays, except for a no-sew toecap at the front.

The Saucony Liberty ISO also adds more support at the back of the running shoe compared to the Saucony Kinvara 9 with a sturdy external heel counter, and the overlays around the midfoot run more directly across the midfoot rather than from front to back like on the Saucony Kinvara 9.

All in all, it is clearly visible from the upper that the Saucony Liberty ISO is meant to deliver more support than the Saucony Kinvara 9.

While both the Saucony Liberty ISO and the Saucony Kinvara 9 come with EVERUN cushioning in their midsoles, the Saucony Liberty ISO comes with an extra medial post to help stop the feet of overpronators from rolling too far inward.

Because the Saucony Kinvara 9 is meant to be worn by neutral runners, it does not have such a medial post.

According to running shoe lab tests, the Saucony Kinvara 9 delivers an amount of stability that lies just above average, while the Saucony Liberty ISO delivers an amount that approaches the max.

In terms of cushioning, the Saucony Kinvara 9 turns out to be overall cushier than the Saucony Liberty ISO, according to running shoe lab test results.

The Saucony Liberty ISO has a heel that is quite firm for both men and women but delivers an above average amount of heel cushioning to both men and women.

The Saucony Kinvara 9, on the other hand, has a cushy heel for both men and women, and delivers somewhat more forefoot cushioning compared to the amount of heel cushioning to both men and women, so you can expect to get an overall soft ride from the Saucony Kinvara 9, according to running shoe lab tests.

The Saucony Liberty ISO is like the Saucony Freedom ISO but then for overpronators, so just like the Saucony Freedom ISO, the Saucony Liberty ISO has a low heel-to-toe drop.

The heel-to-toe drop is about 5 mm in the Saucony Liberty ISO and about 6 mm in the Saucony Kinvara 9, so both running shoes will bring you closer to a neutral plane. The difference in height from the ground is very small between the two running shoes.

The outsoles of the Saucony Kinvara 9 and the Saucony Liberty ISO differ in that the Saucony Liberty ISO has more rubber in its outsole than the Saucony Kinvara 9 does.

The Saucony Kinvara 9 has rubber mostly in high-wear areas to deliver some durability while still keeping the weight of the running shoe down.

The pattern is about the same in the forefoot of both running shoes, although the separation is greater in the Saucony Liberty ISO.

Nonetheless, both running shoes have been found through running shoe lab tests to be pretty stiff for both men and women, with the Saucony Kinvara 9 being just a bit more flexible than the Saucony Liberty ISO.

The women's version of the Saucony Liberty ISO weighs approximately 8.6 oz (244 grams), and the Saucony Kinvara 9 for women weighs about 6.5 oz (184 grams).

The men's versions of the shoes weigh 10 oz (284 grams) and 8.0 oz (227 grams), respectively, with the Saucony Kinvara 9 being the lighter one.

Choosing between the Saucony Liberty ISO and the Saucony Kinvara 9 should not be difficult, because they are meant to be worn by two different types of runners.

If you are a neutral runner who is looking for a soft ride in a running shoe that brings you closer to a neutral plane, you could look into the Saucony Kinvara 9.

If you are a mild to moderate overpronator who is looking for a running shoe that brings you closer to a neutral plane, the Saucony Liberty ISO would be the one to look into.

Note: The weight of a running shoe depends on the size of the running shoe, so any weights mentioned in this review may differ from the weight of the running shoe you choose to wear. Running shoes of the same size were compared for this review.

The two links above will take you to Amazon.com where you can read more about the running shoes.


This review falls under: Saucony

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