Even though the medial midsole is slightly softer, its solid sidewall design provides greater stability than the grooved lateral side. If you ask a hardcore runner what they want in a shoe, most likely they will say “fast” is their priority. Like the GTS 19, the GTS 20 has the same engineered mesh upper, with a 3D printed design that wraps around the midfoot for a secure fit. Some testers felt the GTS 20 was slightly less cushioned, but this could be down to it being lighter than the GTS 19.

They cup the foot on the sides, though the GuideRail acts as more of an under-arch support than anything else. The mesh is softer, and so are the round laces that replace the flat kind used on the previous model.

If long runs of 10+ miles are your main training motif, yet you want a shoe that can also handle intervals, go with the Adrenaline GTS 20.

After this, it compresses and then more shock is being put through the body and this can lead to muscle fatigue and injuries. With the GTS 20, most of the changes are in the guide rail, which now wraps the length of the shoe on the lateral side, offering a little more support under the forefoot. With help from our suppliers, we calculate the number of plastic bottles used to make a size medium of each product. Here’s the beauty of Brooks’ newly Guided foot motion: the same level of support in Adrenaline 19-20 is offered in a more plush version, Transcend, and a more speed-focused version, Ravenna. The Adrenaline continues to shine as an all-around trainer for runners needing steady support, durability, and cushion for everyday runs whether speed or distance is the focus.

The New Balance Fresh Foam Vongo V4 and Mizuno Inspire 15 also delivers a supportive ride without a medial post. Thankfully they felt supportive enough and did not give me any pain or soreness in my feet as I usually get after using lightweight shoes for longer sessions.

Brooks hasn’t changed its rubber formulation, and that means that you get decent traction under most surface conditions. Although, there’s a lower chance of that happening on the 20 as it swaps the flat laces with soft round ones. miles into a run, and the fit relaxes too much if avoid an extra tug-through at the start (if they’ve been loosened for all-day comfort). But for the purposes of this section, it's notably effective in retaining moisture while insulating. The Glycerin GTS 20 has advanced with the times from a heavier Transcend that was more plush and had a more durable outsole.One of the major accomplishments of new EVA foam technology such as this (DNA LOFT) is that it is ultra-soft and responsive at the same time, without sacrificing durability. Because of this I was fine running speed intervals in this shoe; whereas the Saucony Guide 14, only .

Given the narrow design of Brooks, I’m up a half size and so take extra care to tighten the laces toward the ball, or I get blisters from friction. We use marketing, analytical and functional cookies as well as similar technologies to give you the best experience. If for any reason you are not satisfied with your purchase we will be happy to refund or exchange it for you. There's very little slippage, and most runners will never have to worry about anything approaching a blister.The following size chart is a guide to Brooks clothing and footwear sizes with a comparison to European and US sizes. You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. They aren't meant to correct your gait, but they help limit the movement that could slow you down and damage your connective tissues from misaligned percussion. An ethical global supply chain starts with factories and suppliers who share our values and our commitments to respect human rights, advance worker well-being and ensure sustainable manufacturing.