• Discontinued
    Update: Altra One v3
  • Terrain


    Shoes best for road, track and light gravel. See the best road shoes.


    Shoes best for trail, off road, mountains and other unstable surfaces. See the best trail shoes.

    Good to know

    As long as you stick to the road or path, and if you want just one running shoe, buy a road running shoe.

  • Arch support

    Neutral / cushion / high arch

    Shoes for runners who do not need any additional arch support (Around 50% of runners). Best for people with normal, high or medium high arches. See the best neutral shoes.

    Stability / overpronation / normal arch

    Shoes for runners who need mild to moderate arch support (Around 45% of runners). Best for runners with a low arch. See the best stability shoes.

    Motion control / severe overpronation / flat feet

    Shoes for runners who needs a lot of arch support. Best for runners with flat feet. See the best motion control shoes.

    Good to know

    - Rule of thumb: If in doubt, buy neutral shoes to avoid injuries.
    - More about arch support in this video.
    - Find your arch type by following steps from this video.

  • Use

    Daily running

    Cushioned shoes for your daily easy running. Great comfort. See best shoes for daily running.


    Lightweight shoes good for races, interval training, tempo runs and fartlek. Here are the best competition running shoes.

    Good to know

    If you want just one pair of shoes, buy a shoe for daily running.

  • Price
  • Weight
    Men: 6.3oz
    Women: 5.2oz
  • Heel to toe drop
    Men: 0mm
    Women: 0mm

    The height difference from the heel to the forefoot, also known as heel drop, toe spring, heel to toe spring or simply drop.

    There are many opinions about what a good heel drop is. We do not recommend any in particular. Lean more in this video.

  • Heel height
    Men: 23mm
    Women: 23mm
  • Forefoot height
    Men: 23mm
    Women: 23mm
  • Width
    Men: normal
    Women: normal
  • Release date
Show more facts


We spent 7.5 hours reading reviews from experts and users. In summary, this is what runners think:

6 reasons to buy

  • The Quick Dry Air Mesh staves off moisture and provides breathable coverage.
  • Many testers were impressed by the improved durability of the One 2.5.
  • It features a Blown Rubber for better traction, a responsive ride and more flexibility.
  • Runners appreciated the good number of color options for this model.
  • It comes at an affordable price.
  • The mid-sole unit brings responsive cushioning, flexibility, and a balanced platform that’s partially made from recycled materials.

3 reasons not to buy

  • Based on some reviews, the One 2.5 offered less cushioning and less arch support than the previous version.
  • The toe box felt a bit tight for some testers, making their toes clump together uncomfortably.
  • Others pointed out that the heel area was narrow and uncomfortable.

Bottom line

Not many were impressed by the overall enhancement of the Altra One 2.5, but it was able to provide a responsive ride and a more comfortable upper. This shoe is best for tempo running and racing.


Expert Reviews

Experts are runners, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

Are you an expert? Apply to contribute here.

86 / 100 based on 26 expert reviews

  • 100 / 100 | WILLIAM QUICK

    Overall, I give this shoe a thumbs up and I definitely recommend it.

  • 95 / 100 | Running Into Myself

    They feel very light and I feel faster in them. They're really cool shoe.

  • 90 / 100 | Runner's World

    Like the 2.0, this model has more cushioning than the first version, but the foam density in the 2.5 is a hair firmer, providing a more responsive ride that several testers found hit the sweet spot.

  • 90 / 100 | Road Trail Run

    The One 2.5 is a great, free, light feeling shoe with enough protection to put miles on it—especially on shorter, faster days—while they’re fun at a loping speed, I really enjoy them when I drop to 7 minute miles.

Show moreless reviews
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Updates to Altra One 2.5

  • The Altra One 2.5 redesigned its upper in order to give runners a more comfortable ride. It used light and breathable and quick-drying materials to keep the foot cool and dry.
  • Another notable update of the One 2.5 was the improved fit. It comes with a wide forefoot area and an asymmetrical lacing design for a secure fit and feel.
  • The new color options of the Altra One 2.5 are the most visible update of the shoe. They are truly eye-catching and pleasing to the eye.

Altra One 2.5 size and fit

The sizing of the shoe is the usual length like the previous version. Since it has a wider forefoot area and regular measurements on the heel and midfoot, wide-footer and runners with regular foot shape will find a good fit in this version.


The outsole utilizes the FootPOd Technology that maps out the foot’s bones and tendons for the foot to flex naturally. With the maximum flexibility, runners will also enjoy a responsive ride. Found in the outsole as well is the blown carbon rubber. Aside from enhancing the overall traction of the shoe, it delivers a flexible and responsive ride.


The midsole of the Altra One 2.5 utilizes the Dual Layer EVAthat offers a reasonable amount of cushioning. This works hand-in-hand with the Altra’s A-Bound Technology that provides efficient energy-return and sufficient underfoot cushioning. It reduces ground impact and provides springy feel to each step. The shoe uses the brand’s InnerFlex Technology, allowing the foot to move freely and flex to where it wants to. This increases the runners’ speed for a much better running performance. Altra uses its Natural Ride System Technology in the One 2.5. It promotes natural foot movement by allowing the foot mechanisms to work naturally. Natural foot movement is attainable due to the 0 mm heel drop, deep longitudinal grooves and metatarsal pads. Optimal running comfort was achieved through the Natural Foot Design found in all Altra shoes. This technology follows the natural shape of the foot, allowing the foot to relax and spread naturally. Aside from the comfort it gives, it adds stability and speed.


The upper of the Altra One 2.5 was updated. One f the updates is the use of the Quick Dry Air Mesh that is very lightweight. It is highly breathable, keeping the foot cool and dry. It also has the capacity to wick water away. Another notable update in the upper is the Asymmetrical Lacing design of the shoe. It follows the natural shape of the foot. The lacing design offers an improved fit and feel. The shoe also uses a 5-mm removable insole. The contour footbeds were engineered to help runners who need traditional support.