We spent 6.3 hours reading reviews from experts and users. In summary, this is what runners think:

7 reasons to buy

  • A water-resistant mesh material makes up most of the upper unit of this running shoe.
  • The GORE-TEX waterproof membrane was added in the upper for breathable and secure coverage.
  • Many reviewers appreciated the focus on underfoot comfort and protection.
  • The flexibility of the Adrenaline ASR 12 GTX was noted by many testers.
  • The aggressive outsole unit offers superb traction over the trails.
  • The durability of this shoe was also well-received.
  • Pronation control and mid foot support mechanics are also featured in this unit.

3 reasons not to buy

  • There were runners who thought that more protective measures should be added to prevent debris and the environment from injuring the foot.
  • Some experienced their feet slipping a little too easily, even when they had already adjusted the fit well.
  • This 12th version is an expensive running shoe.

Bottom line

The Adrenaline ASR 12 GTX from Brooks is a popular trail running shoe choice for many runners because of its flexibility, stability, and comfort. It needs more protective components, but it’s already a sizeable upgrade from the original version, the Adrenaline ASR 12.


Base model: Brooks Adrenaline ASR 12
Terrain: Trail
Arch support: Stability
Weight: Men: 11.8oz | Women: 9.9oz
Heel to toe drop: Men: 12mm | Women: 12mm
Pronation: Overpronation
Arch type: Medium arch
Use: Jogging
Waterproofing: Waterproof
Material: Vegan
Strike Pattern: Heel strike
Distance: Daily running | Long distance | Marathon
Technology: Gore-Tex
Heel height: Men: 32mm | Women: 32mm
Forefoot height: Men: 20mm | Women: 20mm
Brand: Brooks
Type: Heavy | Big guy
Width: Men: Normal | Women: Normal
Price: $150
Colorways: Grey
Small True to size Large
See more facts

Expert Reviews

Experts are runners, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

Are you an expert? Apply to contribute here.

81 / 100 based on 5 expert reviews

  • 85 / 100 | Canadian Running Magazine | Level 5 expert

    Brooks took one of the most popular trainers of all-time, wrapped it in Gore-Tex and decked it out with a monster of an outsole tread. 

  • 81 / 100 | Heavy | | Level 4 expert

    The added stability also helps to counterbalance overpronation while the midsole keeps feet from rolling inward.

  • 75 / 100 | Outside Online | Level 3 expert

    A steady, versatile workhorse for nasty conditions.

  • 78 / 100 | Running Competitor | | Level 1 expert

    If you're a neutral runner, this shoe's structure might feel like overkill or just too much shoe, although it won't be all noticeable through slush and snow drifts.

  • 78 / 100 | Tourist Run Amsterdam | Level 1 expert

    Good grip on slippery terrain and solid enough sole so you do not feel the tree roots that much.

  • First look | Shop Zappos |

Become an expert

  • Brooks made minimal updates in the Adrenaline ASR 12 GTX that are sure to help improve the latest version’s performance. One minor change that may go unnoticed by many is the slightly lower ankle collar. This will immediately address past concerns of some runners who felt a bit of irritation in their ankles.
  • This running shoe's outsole gets an upgrade in the form of a substantial segmented crash pad, which really helps make the transition from the landing to toe-off smoother and quicker. Brooks also made the outer part of the lugs a bit malleable to handle better loose rocks and graveled paths.

One identity of the Adrenaline ASR GTX line that remains the same is the really snug fit. This will be fantastic for narrow-footed runners with just enough room in the forefoot for those with average measurements. Brooks markets the standard D for the men’s and B for the women’s as the available widths. The sizing runs true with options of 7 to 15 for the men’s and 5 to 11 for the women’s.

The Adrenaline ASR 12 GTX, like its latest version, the Adrenaline ASR 14 uses HPR Plus outsole.  HPR Plus is Brooks’ interpretation of a rubber compound that will keep wear and tear to a minimum, even in high-impact areas. The muscular lugs are designed for really demanding trails and rocky grounds. A new take on the flexibility of the outer portion of these lugs give them better hold on slick rocks and shingles. Lastly, the oversized crash pad extending from the heel going to the midfoot provides more flexibility in the heel to really improve the transition from the heel to the toes. The Omega Flex Grooves in the forefoot work hand in hand with the segmented crash pad when it comes to flexibility and effortless transition.

Brooks’ patented BioMogo DNA is the star technology of the midsole. It is designed to provide cushioning right where and when the runner needs it. Hence, it is also engineered to respond to the specific cushioning needs of both genders. A Progressive Diagonal Rollbar or the PDRB in Brooks’ lingo stands as the main overpronation measure. Instead of a traditional TPU shank or midsole insert, Brooks uses a tri-density foam to limit the excessive inward rolling of the foot after landing.

A water-resistant membrane called Gore-Tex fills the interior of the shoe without sacrificing breathability. The largely mesh upper and prominent overlays give it a nice mix of superb ventilation and support. Brooks made the fabric plush and very comfortable. Both the ankle collar and tongue are adequately cushioned to enhance the shoe’s comfort.


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.