Our verdict

The Xero Shoes Scrambler Low shines as one of the most versatile, feature-rich minimalist trail shoes we’ve tested. We were impressed by its grippy Michelin outsole, excelling across varied terrains, and its ultra-flexible, adventure-ready construction that delivers a smooth, natural ride. In our lab tests, the anatomic toebox promoted excellent toe splay, ensuring outstanding comfort on uneven surfaces. On the flip side, its substantial weight, premium price, and relatively high stack height may raise concerns for some barefoot-style enthusiasts.

Pros

  • Michelin outsole offers amazing grip
  • Anatomic toebox allows natural toe splay
  • True zero-drop geometry
  • Durable upper
  • Versatile for walking, hiking and running
  • No heel slippage
  • Flexible, natural feel
  • Excellent for summer

Cons

  • Heavier than it should
  • Not for technical trails or deep mud
  • Non gusseted tongue
  • High price point

Audience verdict

N/A
Not enough reviews yet

Who should buy

After testing the Scrambler Low extensively in the lab and outdoors, we’re convinced it’s the top choice for:

  • Minimalist runners who appreciate added protection with a slightly thicker, trail-ready midsole.
  • Those seeking a low-stack trail shoe featuring an anatomical toebox and a grippy, rugged outsole.
  • Altra fans ready to explore minimalist trail shoes for a truly ground-connected experience.

Xero Shoes Scrambler Low

Who should NOT buy

We believe the Scrambler Low feels a bit heavy for a minimalist trail shoe, making it less appealing for runners seeking a truly lightweight experience. For those who value a lower weight, we recommend the Merrell Trail Glove 7, which offers a more streamlined, feather-light build and excels on hiking trails and easier paths.

Additionally, we think the Scrambler Low is not ideal for winter trail runs, as its super-breathable upper lacks cold and water resistance. In such conditions, the Xero Shoes Mesa Trail WP is a far better alternative, combining waterproof protection with exceptional comfort in freezing temperatures.

Xero Shoes Scrambler Low parts

Cushioning

Heel stack

The Scrambler Low occupies a unique space with its design. At 16.3 mm in the heel, it feels extremely low-cushioned for runners used to average trail shoes, yet slightly thick for minimalist purists accustomed to barefoot-style designs.

In our view, this balanced design caters well to minimalist runners tackling long distances or extended hikes. After testing, we really think the combination of a trail-ready outsole and thin midsole justifies the added millimetres—offering essential protection while being still below the 20-mm threshold.

Xero Shoes Scrambler Low Heel stack
Test results
Scrambler Low 16.3 mm
Average 31.8 mm
Compared to 121 trail running shoes
Number of shoes
19.6 mm
Heel stack
42.4 mm

Forefoot stack

As expected, the forefoot delivered nearly the same stack height. Our calipers measured 16.4 mm, confirming our earlier thoughts—still minimalist, but only by a hair's width.

Xero Shoes Scrambler Low Forefoot stack
Test results
Scrambler Low 16.4 mm
Average 24.3 mm
Compared to 121 trail running shoes
Number of shoes
13.4 mm
Forefoot stack
33.9 mm

Drop

According to Xero Shoes, this model boasts a true 0-mm drop, and our measurement aligned almost perfectly: -0.1 mm. In our experience here in the lab, such a tiny variance is amazing—we’re accustomed to seeing much larger discrepancies!

Xero Shoes Scrambler Low Drop
Test results
Scrambler Low -0.1 mm
Average 7.6 mm
Compared to 120 trail running shoes
Number of shoes
-0.1 mm
Drop
17.3 mm

Midsole softness

Note: a low durometer measurement equals a soft material, whereas a high measurement means it's firm.

Xero Shoes incorporated its TrailFoam compound to provide a touch of cushioning underfoot, creating slightly more separation from the ground compared to other minimalist designs. In our opinion, this is beneficial for this shoe.

We tested the foam with our Shore A durometer and measured a firm 44.4 HA—a notably high result. This result makes sense for a thin layer designed to maximise protection. Remember that if you’re after a cloud-soft experience, minimalist shoes like this won’t deliver that, and a model like the Nike Zegama 2 might better suit your needs.

Xero Shoes Scrambler Low Midsole softness
Test results
Scrambler Low 44.4 HA
Average 22.9 HA
We use an average of four tests. The photo shows one of those tests.
Compared to 97 trail running shoes
Number of shoes
9.1 HA
Midsole softness (soft to firm)
39.0 HA

Midsole softness in cold (%)

We're sure that many trail runners may aim to use the Scrambler Low year-round. Impressively, after freezing it for 20 minutes, we found the midsole became only 19.7% firmer. This performance is outstanding for an EVA-based shoe, largely due to the foam’s inherently firm nature.

And a quick tip: if you’re planning to wear this shoe in freezing temperatures, be sure to pair it with thick, coldproof socks.

Xero Shoes Scrambler Low Midsole softness in cold (%)
Test results
Scrambler Low 20%
Average 26%
Compared to 97 trail running shoes
Number of shoes
5%
Midsole softness in cold
68%

Insole thickness

We found the 3.9 mm insole surprisingly impactful while running. Despite its lower-than-average thickness, it definitely plays a significant role in the shoe’s comfort.

Xero Shoes Scrambler Low Insole thickness
Test results
Scrambler Low 3.9 mm
Average 4.7 mm
Compared to 120 trail running shoes
Number of shoes
2.1 mm
Insole thickness
7.3 mm

Rocker

The shoe’s rocker design is virtually imperceptible, staying true to the textbook formula for minimalist running shoes.

Xero Shoes Scrambler Low Rocker

Size and fit

Size

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Toebox width - widest part

The foot-shaped toebox on the Scrambler Low offers a distinctive design that prioritizes comfort. Its anatomical shape allows ample room for toe splay, while the slightly increased height—when compared to road-focused minimalist shoes—enhances the secure, comfortable fit for long mountain adventures.

We measured 98.4 mm at its widest point, perfectly matching our impression of a snug-but-roomy feel—a balance unique to barefoot-like designs. In our experience, it felt fantastic right from the first wear!

Xero Shoes Scrambler Low Toebox width - widest part
Test results
Scrambler Low 98.4 mm
Average 98.9 mm
Compared to 121 trail running shoes
Number of shoes
92.0 mm
Toebox width - widest part
104.9 mm

Toebox width - big toe

We measured the big toe area at an impressive 85.9 mm, which we believe delivers exceptional toe splay and a truly natural feel. This gigantic space allows toes to spread comfortably, enhancing the overall minimalist experience.

Xero Shoes Scrambler Low POV

In our view, the design enhances both comfort and stability, particularly on descents. By allowing toes to splay and stabilize naturally during landings and turns, it delivers an adaptive running and hiking experience with excellent ground feel.

Xero Shoes Scrambler Low Toebox width - big toe
Test results
Scrambler Low 85.9 mm
Average 79.3 mm
Compared to 83 trail running shoes
Number of shoes
70.5 mm
Toebox width - big toe
90.1 mm

Stability

Lateral stability test

The Scrambler Low isn’t the most stable minimalist shoe we’ve tested, as it sits slightly higher than other competitors. However, in our experience, it remains low enough to provide a secure ride for midfoot and forefoot strikers.

The addition of small sidewalls brings a stability-enhancing touch, helping to centre the ride—a rare feature in minimalist shoes. However, purists may find this feature unnecessary, as many prefer relying solely on their own muscles and tendons.

Torsional rigidity

In terms of torsional rigidity, we found the Scrambler Low meets expectations for a barefoot design, earning a 1/5. This result surprised us, as we expected the thick outsole to push it to a 2/5.

Test results
Scrambler Low 1
Average 3.5
Compared to 115 trail running shoes
Number of shoes
1
Torsional rigidity
5

Heel counter stiffness

The heel counter lacks any stiff internal structure and is fully pliable, allowing for a snug and comfortable fit. While there are external reinforcements, we found they don’t add much rigidity, resulting in another 1/5 score.

Test results
Scrambler Low 1
Average 3.1
Compared to 113 trail running shoes
Number of shoes
1
Heel counter stiffness
5

Midsole width - forefoot

As with any minimalist running shoe, the midsole dimensions are narrower than those of an average trail shoe—a design choice we believe is key to maintain an agile barefoot feel underfoot.

We found that the forefoot measured 106.2 mm, providing a secure landing platform for forefoot strikers. Midfoot runners are equally supported, as this area doesn’t taper excessively, something evident in our photo.

Xero Shoes Scrambler Low Midsole width - forefoot
Test results
Scrambler Low 106.2 mm
Average 112.2 mm
Compared to 121 trail running shoes
Number of shoes
102.1 mm
Midsole width - forefoot
124.3 mm

Midsole width - heel

The heel, measuring 82.2 mm, is slightly wider than other Xero Shoes models, which makes sense for tackling rugged environments where a touch of extra support can be beneficial.

Xero Shoes Scrambler Low Midsole width - heel
Test results
Scrambler Low 82.2 mm
Average 89.6 mm
Compared to 121 trail running shoes
Number of shoes
77.2 mm
Midsole width - heel
106.0 mm

Flexibility / Stiffness

We found the removable insole to be a nice feature. It incorporates multiple ventilation holes that enhance airflow and improve flexibility.

Flexibility / Stiffness

We found that the Scrambler Low bends impressively well torsionally, although it obviously doesn’t match the ultra-flexible nature of some minimalist road shoes due to the thick outsole. But it still performs admirably for a trail-focused design.

From a longitudinal perspective, it also passes the minimalist test. At just 12.6N, the shoe offers a barefoot-like flexibility, delivering a natural feel while walking or running.

Test results
Scrambler Low 12.6N
Average 27.2N
We use an average of four tests. The video shows one of those tests.
Compared to 121 trail running shoes
Number of shoes
10.5N
Flexibility <> Stiffness
54.5N

Weight

At 9.2 oz or 261g, the Scrambler Low isn’t a lightweight trail shoe by any means, which is clear. However, we think it’s somewhat justified. Ideally, Xero Shoes could reduce it to 8–8.5 oz without sacrificing durability, but it’s not a deal-breaker for us.

Xero Shoes Scrambler Low Weight
Test results
Scrambler Low 9.21 oz (261g)
Average 10.26 oz (291g)
Compared to 121 trail running shoes
Number of shoes
7.51 oz (213g)
Weight
12.66 oz (359g)

Breathability

We discovered that the Xero Shoes Scrambler Low excelled in our breathability test, earning a perfect 5/5. The upper design stood out against our smoke-pumping machine, delivering a summer-ready construction ideal for day-long adventures.

The engineered mesh used by Xero is exceptional for ventilation, as we confirmed with our LED light test. Very few shoes in the lab allowed such a significant amount of light to pass through!

Under the microscope, we discovered the upper constructed from a tightly interwoven engineered mesh, with intricate, twisted strands interlaced for both strength and flexibility.

Xero Shoes Scrambler Low microscope

While it lacks large ventilation holes to prevent wear and tear from sharp rocks, it features constant microscopic openings spaced every few millimetres, optimising airflow across the entire surface.

Xero Shoes Scrambler Low mesh

We also noted that Xero kept padding minimal in the heel and tongue. In our view, this weight-saving choice allowed the brand to reinforce the upper.

The rough texture of the upper feels purposefully designed to withstand abrasions, water, and dirt, making it a durable and practical choice for trail runners.

Test results
Scrambler Low 5
Average 3.3
Compared to 98 trail running shoes
Number of shoes
1
Breathability
5

Durability

The durability result was average, with a 1.1-mm dent in the rubber. While not the most impressive outcome, now we understood Michelin’s choice of a harder-than-usual compound to offset the smaller lugs and limited ground contact.

From our perspective, this durability score suggests that the Scrambler Low is best suited for off-road use. We believe road running could quickly wear down the small lugs.

Toebox durability

To test if the mesh is as durable as it appears, we turned on our Dremel at 5K RPM and applied it to the upper. The result was impressive—a solid 3/5 score that, in our view, ensures good durability for most uses.

We also think Xero’s inclusion of a sturdy toe bumper adds essential protection to the more vulnerable front area of the Scrambler Low. This feature complements the robust upper, preventing damage in a wear-prone zone.

Test results
Scrambler Low 3
Average 3
Compared to 78 trail running shoes
Number of shoes
1
Toebox durability
5

Heel padding durability

The heel padding fell short of expectations, earning just a 2/5. However, the snug fit and absence of heel slippage make it unlikely for holes to develop from friction with the Achilles tendon.

Test results
Scrambler Low 2
Average 2.7
Compared to 76 trail running shoes
Number of shoes
1
Heel padding durability
5

Outsole hardness

Car tyre manufacturers have made their mark on running shoes, with examples like Adidas partnering with Continental and Skechers collaborating with Goodyear. These partnerships often deliver impressive grip performance, so spotting the Michelin logo on the Scrambler Low immediately raised our expectations. It was an exciting surprise!

Xero Shoes Scrambler Low lugs

We tested the Michelin Fibre Lite rubber using our Shore C durometer and measured an exceptionally hard 96.1 HC—one of the highest readings we’ve ever recorded. While we initially worried about traction, the rugged-yet-grippy compound performed exceptionally well on all kinds of dry surfaces.

Xero Shoes Scrambler Low Outsole hardness
Test results
Scrambler Low 96.1 HC
Average 85.6 HC
We use an average of four tests. The photo shows one of those tests.
Compared to 121 trail running shoes
Number of shoes
74.0 HC
Outsole hardness
96.1 HC

Outsole durability

The durability result was average, with a 1.1-mm dent in the rubber. While not the most impressive outcome, now we understood Michelin’s choice of a harder-than-usual compound to offset the smaller lugs and limited ground contact.

From our perspective, this durability score suggests that the Scrambler Low is best suited for off-road use. We believe road running could quickly wear down the small lugs.

Test results
Scrambler Low 1.1 mm
Average 1.0 mm
Compared to 71 trail running shoes
Number of shoes
0.0 mm
Outsole wear
2.0 mm

Outsole thickness

The outsole measures a substantial 2.9 mm, which we believe is a smart choice for protection. In our experience, while thinner outsoles are often preferred for trail shoes, this minimalist design—with its ultra-thin midsole and no rock plate—relies on the outsole to shield against sharp rocks effectively.

Xero Shoes Scrambler Low Outsole thickness
Test results
Scrambler Low 2.9 mm
Average 2.3 mm
Compared to 121 trail running shoes
Number of shoes
0.9 mm
Outsole thickness
5.5 mm

Misc

Lug depth

With 2.7-mm lugs, the Scrambler Low performs best on easy, non-technical terrain—ideally dry conditions. In our experience, the wide spacing between the lugs helps it handle slightly muddy paths but we found it doesn't work very well on difficult trails, soft sand, or deep mud.

Xero Shoes Scrambler Low lugs
The Michelin logo inspires real confidence when it comes to grip.

We think that deeper lugs would compromise the minimalist feel, and even 2.7 mm approaches the upper limit for this type of shoe. Still, this rugged-yet-versatile design makes it suitable for most hikes and runs, balancing grip and adaptability across varied conditions.

Xero Shoes Scrambler Low Lug depth
Test results
Scrambler Low 2.7 mm
Average 3.5 mm
Compared to 121 trail running shoes
Number of shoes
1.5 mm
Lug depth
5.8 mm

Price

The Scrambler Low doesn’t come at a bargain price and might feel steep for a shoe with almost no cushioning. However, in our experience, its high-quality materials and rugged features justify the cost for minimalist enthusiasts that need a reliable trail shoe.

Test results
Scrambler Low $150
Compared to 121 trail running shoes
Number of shoes
£55
Price
£230

Reflective elements

While this shoe boasts impressive trail-ready features like the Michelin outsole, we were surprised that Xero omitted reflective elements from the design. It’s particularly odd since the brand includes them in some of its cheaper models like the Speed Force II.

Xero Shoes Scrambler Low Reflective elements
Test results
Scrambler Low No

Tongue padding

The Scrambler Low features a mixed lacing system with classic eyelets and loops, which works well with the rounded laces included. However, in our experience, swapping them for flat laces might help prevent untying. We also found a tongue loop that keeps the tongue centred—an essential addition given the lack of a gusset.

Xero Shoes Scrambler Low laces

In our view, the tongue is one of the best we’ve tested in any minimalist running shoe. It has 3.7 mm of padding, striking a balance between low weight and comfort, making it both practical and aligned with the shoe’s ethos.

Xero Shoes Scrambler Low Tongue padding
Test results
Scrambler Low 3.7 mm
Average 6.4 mm
Compared to 121 trail running shoes
Number of shoes
1.3 mm
Tongue padding
12.2 mm

Tongue: gusset type

The tongue is not gusseted, and in our opinion, that’s a notable drawback. While minimalism often demands compromises, we believe a trail shoe needs a secure, debris-blocking design to keep the toebox clean and functional.

Xero Shoes Scrambler Low Tongue: gusset type
Test results
Scrambler Low None

Heel tab

While most trail running shoes feature a finger-loop heel tab, it’s uncommon to see one in minimalist or barefoot designs. That's why we were thrilled to finally find this practical addition in a Xero Shoes model!

Xero Shoes Scrambler Low Heel tab
Test results
Scrambler Low Finger loop

Removable insole

We found the removable insole to be a nice feature. It incorporates multiple ventilation holes that enhance airflow and improve flexibility.

Test results
Scrambler Low Yes