Altra Mont Blanc Speed Review
The Altra Mont Blanc Speed is a lightweight, cushioned trail running shoe designed to work with the body, encouraging natural foot function and better posture.
Like all Altra shoes, the Mont Blanc Speed features a broad, rounded toe box. This gives your feet room to spread and function properly inside the shoe. It’s also a zero-drop model, meaning the heel and forefoot sit at the same height from the ground. Essentially, the shoe is flat. This promotes a more natural running gait, encouraging a midfoot strike rather than landing on the heel or toes. Midfoot loading allows the foot to splay and engage fully, stretching the plantar fascia—a thick band of tissue under the foot. The plantar fascia works like a large elastic band: it stretches on impact and recoils at toe-off, helping to spring you forward.
The benefit of running in shoes that promote foot function is that no part of the body becomes overused. Impact is distributed across the feet, ankles, knees, hips, and lower back. You also use less energy, since you’re not overstriding and creating a braking force by landing ahead of your centre of gravity. That braking action slows you down and forces you to push off to regain momentum.
Because your feet are actively working, they get stronger the more you run in them. This differs from shoes with a rocker or heavily curved midsoles, where the foot rides the shoe’s geometry and the feet and ankles do less work.
One of the advantages of a zero drop trail shoe is stability. Without a raised heel, you feel more in control of your foot placement, making it easier to stay nimble and skip over trail obstacles.
The Mont Blanc Speed has a plastic heel counter with thin but sufficient padding. The collar is also lightly padded. The heel fit is noticeably more secure than in Altra models with a softer, less structured heel, like the original Mont Blanc. Once laced up, the heel feels locked in. The tongue is gusseted to help keep debris out, and while thin, it has enough padding to protect the foot from lace pressure. A tongue stay helps prevent it from sliding sideways mid-run. There’s also an extra eyelet for a more secure lacing setup, including the option to use a heel-lock or butterfly lacing method.
Stack height is 29mm in both the heel and forefoot. The midsole features Altra Ego Max around the rim and Ego Pro in the centre. Ego Max adds stability, while Ego Pro delivers a soft yet responsive ride. If a midsole is too soft, your feet lose ground contact awareness and don’t engage as effectively. The Mont Blanc Speed strikes a nice balance—cushioned and responsive, with enough ground feel to maintain a stable ride.
A thin, flexible TPU rock plate sits between the outsole and midsole. It protects against sharp rocks and thorns without making the shoe stiff through the midfoot. The shoe can still flex and adapt to uneven ground, delivering a smoother ride on trails with constant camber changes and reducing the load on your ankles.
The outsole uses Vibram Litebase with Megagrip rubber. The Litebase compound is thinner, improving ground feel, flexibility, and overall weight. The lugs offer solid grip on hard-packed trails—wet or dry—and on light, sticky mud. However, they’re not deep or aggressive enough for very soft or boggy ground.
A men’s UK 9.5 weighs 282 grams, and a women’s UK 6.5 weighs 232 grams—light for a trail shoe with this level of cushioning. Altra sizing is comparable in length to Topo, Brooks, Saucony and 361. If you’re used to Hoka, New Balance, Inov-8, Karhu or La Sportiva, consider going up half a UK size. For example, an Altra UK 11 is roughly equivalent in length to a Hoka UK 11.5.
There’s also a gaiter trap on the heel to attach Altra’s trail gaiters. These help keep debris out and can seal the gap between tights and shoes, adding warmth in winter.
Zero drop shoes always make me feel quicker. Without a raised heel, I find I load the foot more effectively, my knees bend more, and I naturally lift my feet faster. I’m off. Because I test a lot of shoes that aren’t zero-drop, it can take a few hundred metres for my posture to adjust. A slight downhill usually helps, and then I settle into it. I also notice that I look straight ahead and feel taller. In high-heeled or rockered shoes, I tend to look down and lean forward slightly at the waist. Altra shoes correct these tendencies naturally—without me having to think about it.
Because they feel so good to run in, it’s easy to want to wear Altras every day. But as your feet, ankles, and lower legs work harder in this kind of shoe, it’s wise to alternate with your current shoes—just as you would ease into any new strength training routine.
While the Mont Blanc Speed isn’t as flexible or agile as the Altra Superior 7 due to its thicker midsole, it still adapts well to changing terrain. With no heel to create a braking force, you really do fly downhill. On climbs, it’s easier to maintain a quicker cadence compared to stiffer shoes. The freedom for the foot to function properly means less strain on the calves, and you can settle into your running rhythm more quickly over undulating ground.
Despite the name, the Mont Blanc Speed isn’t a racing shoe. It’s a well-cushioned trail runner designed for daily use and longer outings. If you’re racing ultra-distance trail events, it might serve as a race-day option—but not for short trail races. That’s not to say you can’t run fast in them, just that they don’t have the stripped-back, go-faster feel of a traditional racer.
In summary: the Altra Mont Blanc Speed is a lightweight, well-cushioned trail shoe built for everyday and long-distance runs on hard-packed trails. Its broad, rounded toe box and zero-drop platform encourage a more natural stride and better posture, allowing the feet to function fully and do the work they were designed to do.
Other Considerations
Topo Pursuit 2: A similar broad rounded toe box. A noticeably heavier shoe with a slower more cushioned feel. Although they aren’t a really soft ride. The lugs are well spaced out and longer giving better traction on soft ground. https://www.northernrunner.com/blog/topo-athletic-pursuit-2-review/
Inov-8 Trailfly Zero: These are available in two widths. The standard width is similar in width and volume to the Altra Mont Blanc Speed. The Trailfly Zero is a much more flexible nimble feeling shoe as it has a bit less underfoot. The grip is better on softer ground even though this isn’t the intended surface. The Mont Blanc Speed cruises a little better. https://www.northernrunner.com/blog/inov-8-trailfly-zero-review/
New Balance Hierro v9: Available in three width Men’s and two width Women’s. A highly cushioned shoe with a rocker. These do the work for you rather than allow your body to function. So, they have a very different ride. Traction level is similar. https://www.northernrunner.com/blog/new-balance-fresh-foam-x-hierro-v9-review/
Ronhill Freedom Ultra: A straight big toe line makes the toe box feel roomy and promotes foot function although the toe box isn’t rounded like an Altra or Topo shoe. The ride is a similar level of firmness with a responsive cushion. https://www.northernrunner.com/blog/ronhill-freedom-ultra-review/
361 Futura 2: Available in two width Men’s and two width Women’s. A more pointed toe box with a much softer ride. The lugs offer better traction on soft ground yet still ride well on firmer terrain. https://www.northernrunner.com/blog/361-futura-2-review/
Hoka Speedgoat 6: Available in two width Men’s and two width Women’s. A more pointed toe box but, roomier than earlier versions. A rocker does some of the work so you are riding the shoe rather than the shoe working with the body. https://www.northernrunner.com/blog/hoka-speedgoat-6-review/
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