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Altra One<sup>2</sup>




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Maximize your comfort and speed with The One2™ from Altra. Built into the midsole, InnerFlex™ features grid-like flex grooves that allow your foot to flex where it needs to for more freedom and propulsion. The FootPod™ outsole provides flex grooves on the outside that allow your feet to utilize their natural stability zones. Female-specific design accommodates the narrower heel, higher instep and longer arch of a woman's foot. And, like every Altra shoe, the One2™ features our innovative cushioned Zero Drop™ platform to encourage proper, low-impact running technique. And thanks to the FootShape™ toe box, your next marathon could be free of black toe nails, blisters, and foot discomfort. Take your running performance to a whole new level with the One2™.
  • Weight: 5.4 oz.
  • Cushioning: Light

Technical Stuff

  • Weight: 5.4 oz.
  • Cushioning: Light
  • Ideal Uses: Running, Speed Work, Road Racing
  • Platform: Fully Cushioned Zero Drop™ platform, FootShape™ toe box
  • Last: PFS-W
  • Stack Height: 23 mm
  • Midsole: Ultralight EVA/A-Bound™ Blend with InnerFlex™
  • Outsole: FootPod™ Outsole
  • Insole: 5mm Contour Footbed
  • Upper: Lightweight Quick-Dry Air Mesh
  • Lacing Structure: Unique Asymmetrical
  • Other Features: Female-Specific Design


Places your heel and forefoot the same distance from the ground to promote low-impact technique, naturally align body posture and strengthen lower leg muscles weakened from running on elevated heels.

Allows the toes to relax and spread out naturally and the big toe to remain in a straight position for more stability and a powerful toe-off to maximize running performance.

Made of recycled materials, this unique layer sits directly under the foot to reduce the impact of hard surfaces and return energy into each stride. It's literally a layer of bouncy ball between the road and your feet!

This unique outsole pattern maps the bones and tendons of the human foot, allowing your foot to flex where it naturally wants to and utilize its natural stability zones for added balance and support.

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