Verdict from 20 experts and 100+ user reviews

6 reasons to buy

  • The upper unit of the Altra Lone Peak 4.5 feels like a glove around the foot, according to some runners.
  • Several purchasers have lauded the durable construction of this running shoe.
  • Some users consider the outsole unit a reliable source of traction, even on soft ground conditions.
  • The underfoot experience is welcomed by runners who desire responsive cushioning and a bit of stiffness that complements the hardness of the trails.
  • Toe-splay is a trait that the forefoot section is able to deliver, based on a handful of reviews.
  • A lightweight ride of this Altra Peak shoe is appreciated by those who have tested this product.

3 reasons not to buy

  • More than a handful of consumers have reported that the in-shoe experience of this running shoe is a bit restrictive.
  • According to some testers, the heel collar has a tendency to rub against the skin fo the foot irritatingly.
  • The tongue unit is said to have a tendency to slide to the sides of the upper, causing irritation.

Bottom line

The overall reaction of people towards the Lone Peak 4.5 has been positive. People largely welcome this update because of its efficient traction capacity and responsible midsole configuration. However, some have noted that the in-shoe experience is a bit restrictive, thus making them miss the immediate predecessor.

Tip: see the best trail running shoes.

Good to know

The Altra Lone Peak 4.5 is an update to the 4th iteration of the Lone Peak series. This trail running shoe is designed to deliver mild yet noticeable changes to better the performance.

Flexibility is one of the elements that the designers are targeting, so the forefoot section of the facade has been freed of some of the stitched-on overlays, with the printed variant replacing them.

The lacing system is also now simplified. It returns to the traditional scheme, as opposed to the ghillie-style fit-adjustment method of the predecessor.

MaxTrac™ is an outsole layer that is designed to provide traction over the surfaces. The compound that is used for this feature has a naturally grippy nature which allows it to maintain balance on the ground.

Gripping lugs pockmark the external pad. These arrow-shaped nodes are prominent sources of traction, particularly on surfaces that are uneven. The angular edges of each node act like claws. Even upward and downward traversals can become effortless tasks with this trail-ready design. Trail-optimized outsole designs in Altra series like the Superior.

Three technologies grace the main cushioning system of the Altra Lone Peak 4.5. The first of these foam units is the A-Bound™, a full-length piece made of recycled materials. It offers reactive yet consistent underfoot support.

Ethylene-vinyl acetate (EVA) serves as the base of the midsole. This industry-standard compound is tasked with absorbing the impact shock that is generated by the landing phase of the gait cycle, then transferring the energy to the foot and leg for an energized toe-off.

StoneGuard™ is a thin sheet of protective material that is placed in the midsole unit. This element has the goal of preventing sharp trail debris and the ends of irregular surfaces from poking against the platform and causing discomfort or injury to the foot. It has a thin structure to preserve flexibility and natural motion.

A contour-footbed is placed right on top of the main midsole unit. This add-on has a 5-millimeter thickness to add a bit of oomph to the underfoot experience. It has curved sections that support the arch and the crevices of the toes.

The upper unit of the Altra Lone Peak 4.5 is made of a Quick-Dry Trail Mesh. This textile is designed to be breathable and supportive, yet it also has a close-weave construction to prevent small stones and dirt from infiltrating the interior chamber.

Suede overlays bolster the rear, sides, and front of the silhouette. These layers fundamentally maintain the upright position of the upper unit while also helping with the attainment of a secure fit.

The vamp of this Altra running shoe is covered with printed overlays, thin synthetic elements that contribute to the overall durability of the facade without sacrificing weight and flexibility.

The FootShape™ toe box is a roomy forefoot design that allows the toes to splay naturally when gearing towards the lift or even when standing idly. Balance and the efficacy of the toe-off are the areas of the motion that benefits the most from this design.

GaiterTrap™ tabs are incognito portions of the overlay system that welcome the hooks of separately purchased gaiter attachments. Those who desire extra protection against the elements may incorporate these technologies to their Altra Lone Peak 4.5 shoes.

The padded tongue and collar are parts of the upper that are meant to cushion the topmost portions of the foot during the step. They also prevent in-shoe quivering and unintentional shoe removals.

The heel and bridge of the facade have pull-tabs stitched onto them. These add-ons help to ease the process of wearing or removing the shoe.


How Altra Lone Peak 4.5 ranks compared to all other shoes
Top 12% trail running shoes
All trail running shoes
Top 23% Altra running shoes
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Top 19% zero drop running shoes
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The current trend of Altra Lone Peak 4.5.
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Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.