ASICS GEL-Kayano 25 vs. Brooks Adrenaline GTS 18 review

Brooks Adrenaline GTS 18 delivers tons of stability and support with a smooth ride. ASICS GEL-Kayano 25 provides comfort and stability to moderate overpronators...

The ASICS GEL-Kayano 25 and the Brooks Adrenaline GTS 18 are stability running shoes for overpronators, that is, for runners who rotate their ankles inward during the gait cycle.

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The uppers of the ASICS GEL-Kayano 25 The preceding link takes you to Amazon.com and the Brooks Adrenaline GTS 18 are similar in that they expose quite a bit of mesh and have a forefoot that is pretty open and free from overlays.

The Brooks Adrenaline GTS 18 The preceding link takes you to Amazon.com also comes with some overlays that run from the top of the saddle down around the heel, and the Brooks logo also keeps some of the mesh together around the midfoot.

However, most of the support delivered by the Brooks Adrenaline GTS 18 is located around the back half of the running shoe.

The ASICS GEL-Kayano 25 is somewhat similar, because it provides lightweight support around the midfoot through the use of underlays, and then has a very sturdy external heel counter at the back around the heel.

The Brooks Adrenaline GTS 18 does not come with an external heel counter but just has overlays at the back and exposes some mesh.

Therefore, the ASICS GEL-Kayano 25 is expected to deliver much more support around the heel than the Brooks Adrenaline GTS 18 does.

In addition, the external heel counter is meant to diminish heel rotation, which participates in the process of delivering pronation control to runners.

Both the Brooks Adrenaline GTS 18 and the ASICS GEL-Kayano 25 deliver quite a bit of comfort in the toe box, but the Brooks Adrenaline GTS 18 might feel a bit more comfortable to runners who have big bunions, because the internal fit system and the mesh of the ASICS GEL-Kayano 25 might provide more tightness in some areas in the forefoot.

All in all, the uppers of the Brooks Adrenaline GTS 18 and the ASICS GEL-Kayano 25 can be seen as being focused more on comfort than on support. They deliver just enough support to keep your foot on the running platform, but the ASICS GEL-Kayano 25 is the one that delivers lots of support around the heel.

Both the ASICS GEL-Kayano 25 and the Brooks Adrenaline GTS 18 are meant to also give you a comfortable ride but do so in different ways.

The Brooks Adrenaline GTS 18 has one main layer of foam that is well segmented on the lateral side and that provides quite a bit of ground contact to give you smooth heel-to-toe transitions.

The type of midsole material used by the Brooks Adrenaline GTS 18 is not meant to deliver a maximum amount of cushioning but rather enough cushioning to make your ride soft while still feeling responsive, so not too soft nor too firm.

Tests have shown that the Brooks Adrenaline GTS 18 is quite cushy in both the heel and the forefoot.

The ASICS GEL-Kayano 25 has a midsole that consists of two layers of foam under the heel and midfoot, and one layer under the forefoot.

It also comes with GEL cushioning in the heel to soften impact and absorb shock at heel-strike.

The bottom layer of foam under the heel is more responsive and thus a bit firmer than the thinner top layer of foam.

Because of this combination of soft and somewhat firm foam under the heel, the heel of the ASICS GEL-Kayano 25 turns out to deliver a more moderate amount of cushioning compared to the amount of forefoot cushioning it delivers.

This is different for women, though, who get a bit more height and thus extra foam under their heels to alleviate tension on their Achilles tendon, and this extra height adds some cushiness to the heel of the women's version of the ASICS GEL-Kayano 25.

The softer layer of foam under the heel runs through to the forefoot and becomes a bit thicker there to deliver more cushioning than in the heel.

Therefore, while your ride should feel overall soft in the ASICS GEL-Kayano 25, the Brooks Adrenaline GTS 18 might be a better running shoe for heel-strikers and displays a better balance between heel and forefoot cushioning.

Because the ASICS GEL-Kayano 25 and the Brooks Adrenaline GTS 18 are stability running shoes, they come with a support system on the medial side to control overpronation.

Because the ASICS GEL-Kayano 25 has a thin layer of softer foam under the heel, its support system does not go all the way up like that of the Brooks Adrenaline GTS 18.

Both running shoes come with a midfoot shank, but the midfoot shank of the Brooks Adrenaline GTS 18 is located only on the medial side and is smaller than that of the ASICS GEL-Kayano 25, which connects the two sides of the midsole.

However, because the Brooks Adrenaline GTS 18 delivers more ground contact than the ASICS GEL-Kayano 25, the amount of support right under the midfoot is close to each other, although the ASICS GEL-Kayano 25 might have an advantage there.

The area of support is quite long in both running shoes, but the medial post of the Brooks Adrenaline GTS 18 covers a larger area than the support system of the ASICS GEL-Kayano 25.

Therefore, the Brooks Adrenaline GTS 18 is expected to deliver a somewhat stronger degree of pronation control despite the fact that it does not have an external heel counter like the ASICS GEL-Kayano 25 does to start the process of pronation control from within the upper.

Both running shoes have three flex grooves in the forefoot that are interrupted by rubber under the big toe so increase stiffness on the medial side of the forefoot.

The ASICS GEL-Kayano 25 has larger areas of rubber than the Brooks Adrenaline GTS 18, which has a midsole that displays lots of separation and segmenatation, all of which benefit the smoothness of your ride.

The ASICS GEL-Kayano 25 comes with a vertical flex groove that the Brooks Adrenaline GTS 18 does not have and that is meant to help you achieve a more efficient gait.

Both running shoes have a crash zone at the back that is well isolated from the rest of the outsole to isolate shock at heel-strike.

Overall, both running shoes have been found to be on the stiff side, but stiffness generally benefits stability and support.

Because of the amount of separation in the outsole of the Brooks Adrenaline GTS 18, it might turn out to be a bit more flexible than the ASICS GEL-Kayano 25, if not, deliver a much smoother ride.

The women's version of the ASICS GEL-Kayano 25 weighs approximately 9.8 oz (278 grams), and the Brooks Adrenaline GTS 18 for women weighs 8.3 oz (235 grams).

The men's version of the the ASICS GEL-Kayano 25 weighs about 11.9 oz (337 grams), and the Brooks Adrenaline GTS 18 for men weighs approximately 9.7 oz (275 grams).

If you are a moderate overpronator who is looking for a good amount of stability and support as well as a comfortable ride, you could choose either the ASICS GEL-Kayano 25 or the Brooks Adrenaline GTS 18.

Both running shoes are geared towards delivering lots of comfort, but your ride might be overall softer and smoother in the Brooks Adrenaline GTS 18 than it would be in the ASICS GEL-Kayano 25.

The ASICS GEL-Kayano 25 offers much more support around the heel and probably a bit more than the Brooks Adrenaline GTS 18 under the midfoot, but all in all, if you know you need lots of stability and support, you may want to look into the Brooks Adrenaline GTS 18 first.

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 | Brooks

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