• Discontinued
  • 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: 8oz
    Women: 7oz
  • 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: 18mm
    Women: 18mm
  • Forefoot height
    Men: 18mm
    Women: 18mm
  • Width
    Men: Normal
    Women: Normal
  • Release date
Show more facts


Expert Reviews

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82 / 100 based on 3 expert reviews

  • 85 / 100 | Runner's World

    For efficient runners on race day.

  • 80 / 100 | Runner's World

    On this version, the upper is a single mesh layer for superior on-skin feel.

  • 80 / 100 | Runner's World

    On this version, the upper is a single mesh layer for superior on-skin feel.

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  • The Altra 3-Sum features the SpeedPod outsole that follows the natural built of the foot. This is design to provide added flexibility and responsive ride. This technology comes with a rubber compound for added durability.
  • The midsole of the shoe uses EVA foam that provides durable cushioning. This works perfectly with the Natural Ride System for natural foot movement and the natural foot design for maximum comfort.

The 3-Sum is available in standard length and width. It has a medium measurement in the heel and midfoot area while the forefoot is wide enough to accommodate wider foot measurement. The shoe is great for runners with medium and wide foot measurements.

The SpeedPod outsole is strategically placed underfoot to support the bones from the moment the foot lands until it springs for toe off. The blown rubber outsole is primarily used in the outsole for excellent traction in varied areas and in inclement weather conditions.

The midsole of this running shoe from Altra is made up of the Altrabound foam for plush cushioning and the average dual density EVA foam for the right amount of aggressive response in the midsole. Another feature of the midsole is the Natural Ride System that is designed for proper foot mechanics and natural foot movement.

The upper of the Altra 3-Sum comes with the quick-drying air mesh that wicks water away while keeping light and breathable. The seamless upper is designed to reduce irritation and provide a sock-like comfort. The asymmetrical lacing follows the natural shape of the foot that also improves the overall fit and feel.