Adidas Ultra Boost ST vs. ASICS GEL-Kayano 22 review

Adidas Ultra Boost ST provides a smooth and stable ride with a comfortable upper. ASICS GEL-Kayano 22 provides a very plush ride to moderate overpronators for long runs.

The Adidas Ultra Boost ST and the ASICS GEL-Kayano 22 are stability running shoes that are geared toward moderate overpronators.

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Do not confuse the Adidas Ultra Boost ST with the Adidas Ultra Boost. The former is a stability running shoe, while the latter is a neutral cushioning running shoe.

The uppers of the Adidas Ultra Boost ST The preceding link takes you to Amazon.com and the ASICS GEL-Kayano 22 are quite different in that the Adidas Ultra Boost ST has a knitted upper that does not have any overlays other than a firm band that wraps the midfoot to give you a good lockdown there.

The ASICS GEL-Kayano 22 The preceding link takes you to Amazon.com has an upper that consists of mesh that provides some structure and no-sew overlays to keep your foot in place. However, the no-sew overlays that wrap the midfoot are less supportive than the band in the Adidas Ultra Boost ST.

But the ASICS GEL-Kayano 22 also comes with a stitched-on overlay that pulls the top of the saddle toward the midsole and back of the shoe to increase the amount of support in the upper.

And then at the back, the ASICS GEL-Kayano 22 comes with an external heel counter to really lock your heel down onto the platform. The Adidas Ultra Boost ST also provides reinforcement at the back with a heel cage that cups the heel on both sides.

All in all, you should get a decent amount of support from the upper of either running shoe with the Adidas Ultra Boost ST providing just a tad more support around the midfoot than the ASICS GEL-Kayano 22.

Both the Adidas Ultra Boost ST and the ASICS GEL-Kayano 22 are meant to deliver a plush running experience.

The Adidas Ultra Boost ST does this through the use of boost foam in its midsole, while the ASICS GEL-Kayano 22 comes with two layers of midsole foam with GEL cushioning in the heel and in the forefoot.

Running shoe lab tests show that the Adidas Ultra Boost ST has a very cushy heel for men but provides somewhat less forefoot cushioning than the ASICS GEL-Kayano 22 for men. However, both running shoes are at the higher end of cushioning.

For women, the differences between the two running shoes are minimal with both having a very cushy heel and forefoot. However, the Adidas Ultra Boost ST delivers just a tad bit more forefoot cushioning but a tad less heel cushioning than the ASICS GEL-Kayano 22.

If you are a heel-striker, the ASICS GEL-Kayano 22 would be good if you are a woman and the Adidas Ultra Boost ST if you are a man or a woman.

Both the Adidas Ultra Boost ST and the ASICS GEL-Kayano 22 come with elements to provide pronation control because they are stability running shoes.

The ASICS GEL-Kayano 22 has a support system on the medial side of the midsole and combines this with a midfoot shank that connects the lateral to the medial side to provide midfoot integrity.

The Adidas Ultra Boost ST comes with a piece of firmer foam on the medial side that runs in line with the band that runs in the upper. Unlike the ASICS GEL-Kayano 22, the Adidas Ultra Boost ST provides full ground contact under the arch, which increases the stability of the running shoe.

However, the Adidas Ultra Boost ST does not provide complete ground contact under the midfoot, since it also comes with a midfoot shank that provides midfoot integrity right under the center of the foot.

All these elements make the Adidas Ultra Boost ST come out of running shoe lab tests as the one that provides the most stability and support.

The outsoles of the two running shoes are also quite different with the ASICS GEL-Kayano 22 having a more traditional midsole and the Adidas Ultra Boost ST an all-in-one midsole.

The rubber under the Adidas Ultra Boost ST has the form of a web that stretches to provide a smooth transition from heel-strike to toe-off. However, this also increases the stiffness of the shoe, since there aren't flex grooves that run from side to side; they are impeded by rubber.

The ASICS GEL-Kayano 22, on the other hand, displays a good amount of separation in its outsole both horizontally and vertically.

This helps the ASICS GEL-Kayano 22 come out of running shoe lab tests as the more flexible one for both men and women.

The women's version of the Adidas Ultra Boost ST weighs approximately 10.0 oz (283 grams) and the ASICS GEL-Kayano 22 for women weighs 9.6 oz (272 grams). The men's versions of the shoes both weigh 11.6 oz (329 grams).

If you are a moderate overpronator who is looking for a very soft ride, you could go with either the Adidas Ultra Boost ST or the ASICS GEL-Kayano 22.

And for an increased amount of stability and support, you may want to consider the Adidas Ultra Boost ST more than the ASICS GEL-Kayano 22.

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: ASICS

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