If there’s one trail shoe that has generated buzz at TRE, the Merrell MTL Adapt would easily top the list. This shoe isn’t just another addition to Merrell’s trail lineup—it’s a bold step forward in design, innovation, and trail-ready functionality. But how does it hold up on the trails, and what sets it apart for runners like us at Run Oregon? Let’s dive in!
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Looks
The Merrell MTL Adapt is undeniably eye-catching. Unlike some of Merrell’s more understated trail designs, the Adapt makes a bold statement. Its vibrant pinky-red outer hue (is it Salmon? Coral? You decide!) is just the start. The real showstopper is the outer midsole with its “whipped butter” groove design, which combines eye-catching aesthetics with functional tech. It’s functional sure (more on that later), but let’s be honest—it just looks cool.
Construction and Fit
The MTL Adapt shares some DNA with its cousins, the MTL Skyfire 2 and MTL Long Sky 2 Matryx, but takes things to a new level with its maximal stack and broader base. This wider footbed offers extra room and stability, making it a good choice for runners who need a bit more space. If you’ve got a narrower foot, though, you might want to try these on first; the heel lock could feel a little loose for slimmer profiles. Head over for wear test at a local running store just to make sure it works for you.
Specs
- Stack Height: 36mm/30mm (as outlined by Merrell)
- Weight: 10.15 (M9)
- Lugs: 4mm
Upper
The Matryx upper on the Adapt is tough, lightweight, and ready to handle all the miles you throw at it. Runners across the board LOVE the construction of this material. It is the same material Merrell uses in their other MTL shoes, so you know it’s durable and provides a solid lockdown.
The gusseted tongue and cushioned heel collar add to the comfort. And for the Adapt, it’s not just about the feel – its likely a necessity to have this coupled together to ensure that your runs feel dialed in and secure.
The only downside? Breathability. It’s not terrible, but if you’re out in hot conditions all day, you might notice it.
Midsole
The dual-density FloatPro midsole is where the magic happens. This construction is also in the other MTL versions, but they are sort of impossible to compare as the Adapt nearly doubles the stack height of those race-ready shoes.
When I first held these in my hands and squeezed – they definitely felt firmer than I was expecting. That feeling transforms when running (I guess it’s good I run on my feet and now my hands) and its nice balance of cushion and stability that’s perfect for moderate-paced, long-distance runs. When you add in the FlexConnect tech – the aforementioned segmented grooves – it really allows for adapting to uneven terrain, ensuring smooth toe-offs and landings.
The midsole is cushy and responsive, but it’s not that ultra-soft marshmallowy feel some people love. Instead, it’s got what I’d call “controlled cushion”. It’s not exactly screaming “race day” but feels nice underfoot and able to handle tons of miles.
Outsole
The Vibram MegaGrip outsole is a proven performer, and it delivers once again here. With 4mm lugs and excellent coverage, the Adapt provides reliable traction across varied terrain. There’s minimal exposed midsole, ensuring durability and grip even on technical trails.
Conclusion
Merrell MTL Adapt
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Thank you to Merrell for providing us with test items. Please read our transparency page for info on how we do our reviews.








