ProView – Merrell Agility Peak 6 GTX Review

This year brought an exceptionally rainy spring with some basins in NW Montana reaching well over 130% of the average rainfall. The Merrell Agility Peak 6 GTX had a tough battle with weather conditions this June and July, but it fought valiantly. Boasting over 40 years of history and innovation, Merrell threw a real contender into the ring of “Rugged Trail Runners”. 

This time of year, I am finding every opportunity I can to spend time in the mountains. Some years, the trails are ready to go, and getting up high in the alpine is no issue. This year, the blowdown from multiple wind storms coupled with the late-season snow and rain has created significant challenges when trying to get into the backcountry. I have never been a fan of waterproof trail running shoes, and I often encouraged people to avoid them in the summer due to their inability to dry out if you do get your socks wet. However, a few long days of soaking wet conditions and miles of snow crossings might have changed my mind. 

The Merrell Agility Peak 6 GTX followed up what was, in my opinion, an innovative and well-built shoe. The Agility Peak 5 was stable with an accommodating fit and enough stack height for your longest of days. The Agility Peak 6 somehow felt like an improvement while increasing the stack height and heel-toe drop from its predecessor. Add up all the updates and we are left with a fully capable, sub-ultra and ultra-marathon distance, technical trail machine. 

I have always been drawn to the more technical side of trail runners because I love technical terrain, both on and off trail, and I really hate rolling my ankle. I have had success with technical shoes like the Norda 002, Adidas Terrex Speed Ultra, Hoka Speedgoat, and The North Face Vectiv Sky 2. Those types of shoes seem to be my sweet spot for stack height and locked-down stability. I have a few long-distance off-trail endeavors on the horizon, so I am spending a lot of my mileage in off-trail terrain or very technical trails. I used the Merrell Agility Peak 6 GTX on almost every trail run in June and July, and I was surprised by how excited I was to grab them over other options. 

Fit/Comfort

The overall fit of a shoe has slowly become the single most important aspect of my running footwear. Nothing ruins a long run quicker than knowing you are going to lose a toenail or develop a nasty blister. When I first tried on the Agility Peak 6 GTX, one change that I noticed from its predecessor was the more technical fit. It was snug through the forefoot, midfoot, and heel. That did worry me a bit because, while I love a technical shoe, I was nervous about longer miles causing some pain. After miles and miles of long runs, snow crossings, and backpacking trips, I didn’t have any pain or fit issues whatsoever! I don’t think this shoe is for everyone as runners with wider feet, or folks who prefer a wider toe box will more than likely find the Agility Peak 6 too narrow for longer days. Unfortunately, Merrell doesn’t make the GORE-TEX version in wide, but they do carry the regular version in wide. 

Look/Style

Merrell has a knack for finding their way into the fashion scene while keeping their roots in technical and quality footwear. They often stretch the limits in ways other similar brands won’t push. The Agility Peak 6 doesn’t push fashion boundaries like many of Merrell’s everyday sneakers or their line of barefoot shoes, but they are still sleek and come in a variety of eye-catching colors. The GORE-TEX version has a more muted range of colors as they are expected to get wet and dirty, but the non-GTX and BOA versions have vibrant designs including their new 45th anniversary throwback colorway. 

Features

Merrell kept the features pretty simple with the Agility Peak 6 GTX. The GORE-TEX “Invisible Fit” upper claims “lightweight, breathable protection”, which I have found to mean somewhat breathable and somewhat waterproof. When I spent a lot of time in wet brush or longer snow crossings, my feet would stay warmer than they otherwise would, but they would also get wet and stay wet for the remainder of the day. The upper is otherwise comfortable with minimal fabric stretch for a locked down feel. The toe protection is top notch, and the “TPU Overlays” really hold up to stubbing your toe over and over again like I do. I do wish they had included a small velcro patch for a gaiter as most lightweight gaiters now have standardised the hook and velcro attachment. 

Function/Performance

The Agility Peak 6 GTX really shines in its performance over many miles of technical terrain. The foam holds up well on sharp rock and feels supportive and responsive enough for ultra-length efforts. I did a few faster tempo workouts on trail and gravel to see how the shoe felt at race pace and I was pleasantly surprised with how spry they felt. I could definitely see the Agility Peak 6 being a race ready shoe for some of the more technical ultra races like The Rut in Big Sky, MT or The Minotaur Skyrace in Alberta. 

Durability/Construction/Weight

Merrell is well known for their quality and durability. The Agility Peak 6 GTX does not fall short of the high expectations I have for Merrell. The build quality on this trail runner seems to be up there with some of the best in terms of bang for your buck. At $160 for the regular and $185 for the GTX, you are getting a lot for your money, especially in today’s market. Both versions come with 5mm lugs of Vibram Megagrip covering a huge percentage of the sole while only cutting out small sections of rubber for weight savings. At 38mm in the heel and 30mm in the sole, you get 8mm of heel-toe drop in Merrell’s durable “FloatPro” foam. This shoe has everything you need and nothing you don’t at 10.8oz or just over 300g. 

Friendliness to the Earth

Merrell has an incredibly comprehensive page on their sustainability approach including links to films and reports on their products. It does feel a bit outdated as most of the page is about where they want to be by 2025. They have goals like making sure 100% of their products contain organic, recycled, or renewable materials, 100% responsibly sourced apparel, and a lot more. I would love to see a solid update on how they are doing with their goals in 2026. Other than that, it is nice to see a bigger outdoor brand be open with their goals and expectations. 

Final Word

Merrell’s Agility Peak 6 GTX is a welcome update in their trail runner line. I have really enjoyed seeing more brands break into the trail running space with quality and innovative products. In a severely over-saturated market, it is refreshing to see Merrell take the time to produce a new and exciting update to an already quality product. I look forward to using this trail runner throughout the year and assessing how it holds up to a full season of miles and technical races. 

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