The Arc'teryx Sylan 2 ($220) is built for mountain speedsters who want to move fast over technical terrain. Our tester logged over 100 miles across the Picos de Europa and the U.K.'s Lake District and came away impressed with the shoe’s well-balanced personality, which delivers genuine energy return without sacrificing the stability serious mountain running demands. The narrow toe box is a significant catch, though: It routinely caused painful pinky-toe blistering, and that alone could be a dealbreaker depending on your foot shape. But if the fit works for you, the Sylan 2 is an impressively durable and capable trail shoe for technical trails.
Cushioning
Responsiveness
Stability
Traction
Durability
Sustainability
Best for
All-around
Weight
1 lb. 4 oz.
Stack height
31.5/25.5mm
Upper
Woven
Midsole
Supercritical foam & carbon plate
Outsole
Vibram Megagrip Lightbase (4.5/3.5mm)
Pros
Cons
Arc'teryx Sylan 2
For this season's top models, see our guide to the Best Trail Running Shoes.
The Arc'teryx Sylan 2 offers a moderate amount of cushioning that sits right in my preferred range—not the over-plush feel I get from Hokas, but with more underfoot protection than something like the La Sportiva Bushido. The shoe pairs 31.5 millimeters of stack at the heel with 25.5 millimeters at the toe (about middle-of-the-road for trail running shoes, which range from about 40 to 25mm at the heel), and a carbon fiber plate adds a layer of firmness and ground protection to what would otherwise be a squishier ride. The overall feel lands somewhere between supportive and soft, which I've really come to like.
I've taken the Arc'teryx Sylan 2 across a wide range of terrain and efforts, from short hill-repeat workouts to a five-hour, technical long run with over 6,000 feet of vert in the mountains near my home in Cantabria, Spain. Despite the moderate stack, I never felt unbalanced or insecure on rocky terrain, and the heel stack does a great job of absorbing the impact of downhill pounding. For me, it’s a near-ideal level of cushioning, and one that makes my legs feel fresher the day after a hard effort than they might in a shoe with less or softer cushion.
The Sylan 2 is designed to offer the best possible balance of speed and stability for moving quickly over technical terrain. It feels soft and forgiving on descents and fast and snappy on the flats—a great combination for long days in the mountains. Arc'teryx accomplishes this with a rockered midsole, a moderate amount of supercritical foam, and a carbon plate that work together in tandem.
Compared to a general trail running shoe like my Saucony Peregrine, the Sylan 2 feels less like an everyday companion and more like a specific tool built for moving with purpose. In terms of pure responsiveness and energy return, I'd put it almost on par with the Mount to Coast H1, which is high praise.
Not all carbon-plated shoes are stable—some end up feeling quite tippy on anything more than flat trail. But this isn't the case for the Sylan. The plate delivers a planed and protected underfoot feel that’s in its element on off-camber mountain terrain. I even know folks who love the Sylan 2 as a hiking or fastpacking shoe, which speaks to how capable it is on the trail.
In terms of around-the-foot stability, the Sylan 2 delivers one of the best lockdowns I’ve worn. The stretchy tongue is integrated into the collar and upper rather than being its own separate piece, which gives the whole shoe a dialed-in, sock-like sensation. The heel counter extends a bit higher than a traditional trail shoe, with padded bumpers on either side, and the laces easily offer a very locked-in feel.
On a recent outing in the Picos de Europa, I put the Sylan 2’s stability to the test on terrain that turns to 100% rock after the first few miles—steep, uneven, and loose underfoot in places. I never felt insecure or unbalanced, even moving fast. More than anything, the shoe felt like an extension of my foot. Given its narrow base, it's not quite as stable as a wider shoe like the NNormal Tomir or Norda 001A, but it comes close. It’s a shoe I wouldn’t hesitate to reach for off-trail mountain exploration, which is impressive given its speed chops on-trail.
The Sylan 2 features a Vibram Megagrip Litebase outsole with a combination of 4.5- (perimeter) and 3.5-millimeter (center) lugs. Vibram Megagrip is a compound I trust implicitly; I've worn a lot of trail running shoes with this type of rubber, and it's always served me well, whether scrambling, navigating wet boulders, or running standard dirt trails. The lugs are well-spaced to shed mud effectively, a notable improvement over the previous Sylan model my wife used to run in, which tended to hold onto mud for an entire run.
Given the Sylan 2's lug depth, I was a little skeptical heading into steep, muddy terrain while running in the U.K.’s Lake District—a notoriously steep and muddy place. It felt like the kind of terrain where I might want something more trail-biting, like the Salomon Speedcross (which uses 5mm lugs). But the Sylan 2 performed better than expected and felt secure across a wide range of underfoot conditions, including dry rock, wet rock, dirt, and bog.
The build quality here feels exactly like what I've come to expect from Arc'teryx. The tightly woven upper is lightweight and breathable yet remarkably strong, and after 100 miles it still looks brand new. I expect the midsole to pack out and the outsole to wear down long before the upper gives up the ghost, which is all you can really ask for in terms of trail running shoe durability.
The midsole has picked up some superficial scratches from technical, rocky descents, but that's typical wear for any shoe I run in regularly on sharp limestone, and it hasn't affected the ride. The outsole also still looks great, with no signs of significant wear. I do suspect the outsole will be the limiting factor in the shoe's lifespan, though, given its ultra-grippy compound and relatively shallow center lugs.
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The Arc'teryx Sylan 2 features a woven upper with numerous TPU overlays around the foot and at the laces. The tongue is integrated into the upper and culminates in a sock-like collar that hugs the ankle closely. This design has become increasingly popular in trail shoes (as seen in models like the La Sportiva Prodigio Pro and Brooks Cascadia Elite) and has become my preference over a standard tongue. It results in a more secure lockdown and keeps most trail debris out.
Despite the Sylan's dense weave, breathability has been a non-issue. I've worn the shoe on long, hot, sweaty days without any overheating. And after getting hit with a surprise rain shower mid-run, it drained well and was fully dry by the next day. The engineered mesh doesn't absorb much water to begin with, which makes it efficient at shedding moisture rather than soaking it up.
I'm typically a US size 11 and sized down to a 10.5 using Arc'teryx's sizing guide, which I found accurate and easy to follow. Unfortunately, despite nailing the length, the shoe’s narrow toe box did not work for my wider-than-average feet. It was around the five-mile mark on each of my runs where my pinky toe started to protest. At first, I kept running in the shoes, thinking they might relax with time, but the pain and blistering only confirmed that I can't push real distances in these without consequences.
I was really bummed to realize this, because everything else about the Sylan’s fit is excellent—the heel lockdown is great (although I don’t recommend wearing the shoe with shorter socks) and the sock-liner construction makes the midfoot feel very secure. If Arc'teryx widened the toe box even slightly, it could be one of my favorite shoes. As it stands, I'd recommend measuring your foot against Arc'teryx's sizing chart before buying, and if you know you run wide, I wouldn't risk it with this model.
La Sportiva Prodigio Pro ($225): The Fan Favorite
Like the Sylan 2, the La Sportiva Prodigio Pro is a shoe built to balance race-day speed with the stability you need on rocky, rooty terrain. But it offers this combination in a slightly different flavor, with a more generous helping of foam and a livelier, more energetic ride than the firmer Sylan 2. Fit-wise, both run narrow and feature sock-like uppers, though the Prodigio Pro is more accommodating of wider feet. Overall, the Prodigio Pro has been the better-received, more well-rounded shoe of the two, but if you want more underfoot armor on technical terrain, the Sylan 2 is worth a look. For more, see our Prodigio Pro review.
Brooks Cascadia Elite ($275): Built for a Different Trail
The Cascadia Elite and the Sylan 2 are both premier trail "super shoes," featuring advanced propulsion plates—the Cascadia's is Pebax rather than carbon—and cutting-edge foams, but they're built for entirely different trail experiences. The Cascadia Elite is a high-stack, plush, and forgiving ultra-marathon cruiser, while the Sylan 2 is more moderately cushioned and firmer underfoot, making it faster and less boat-like when moving quickly on technical terrain. If long-distance comfort is the priority, go with the Cascadia Elite. If you want a precise, ground-hugging tool for steep, technical terrain, the Sylan Pro 2 has the edge. Read our review of the Brooks Cascadia Elite.
The Sylan 2 is a precise, carbon-plated trail shoe built for fast, confident moves over genuinely technical terrain. Just know the narrow toe box can be a dealbreaker for wider feet.
Cushioning
Responsiveness
Stability
Traction
Durability
Sustainability
The La Sportiva Prodigio Pro is a rare do-it-all trail shoe. It boasts maximum cushion and is wildly energetic, yet genuinely grippy and stable. It's a high performer for just about any distance, speed, or terrain. Just be aware that the fit runs short and snug, and there’s no rock plate for extra underfoot armor.
Cushioning
Responsiveness
Stability
Traction
Durability
Sustainability
The Cascadia Elite is Brooks’ bold entry into the modern trail race shoe category, pairing max cushioning with a snug, race-ready fit, lively energy return, and outstanding traction. It's a winning combination for long days and race efforts, if you're willing to pay for it.
Cushioning
Responsiveness
Stability
Traction
Durability
Sustainability
The Arc'teryx Sylan 2 is for the mountain runner who wants a precise, fast-feeling tool for technical terrain rather than an everyday training shoe. The combination of a carbon plate, supercritical foam, and a sock-like upper construction makes for one of the most stable, responsive rides we've tested this year. It's trustworthy on loose, off-camber rock and grippy enough to handle everything from dry stone to mud without hesitation. If your trails skew technical and you want to move quickly across them, this shoe was built with you in mind.
That said, the fit is a real consideration. As we’ve experienced with many Arc’teryx shoes, the narrow toe box is likely a dealbreaker for wide-footed runners. You’ll also want to check the sizing guide when purchasing online, as the shoe runs large.
Go for it if you have a narrower foot and want a precise, stable, and responsive shoe for technical mountain running or racing.
Pass on it if you have wide feet, want maximum cushioning for ultra-distance efforts, or are looking for a more versatile everyday trail shoe.
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