• 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: 11.2oz
    Women: 9.2oz
  • 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: 30mm
    Women: 30mm
  • Forefoot height
    Men: 30mm
    Women: 30mm
  • Width
    Men: Normal
    Women: Normal
  • Release date
    Jun 2019
Show more facts


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.

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74 / 100 based on 2 expert reviews

  • 74 / 100 | Road Trail Run

    The Paradigm 4.5 is very well suited for high mileage on hard surfaces at slower to moderate paces and recovery runs The zero drop and forefoot fit however may not be for everyone.

  • 75 / 100 | Road Trail Run

    The bouncy ride is fun, but the shoe is too heavy to make that bounce turn into speed. The fit has issues, and the look of the shoe is awkward.

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  • Shortly after the release of the Altra Paradigm 4.0 comes a “halfway” update of the series: the Altra Paradigm 4.5. Albeit highly similar to the previous version, this new shoe has a significant difference as it is a shoe for overpronators. Both shoes may feature the same technologies but the Paradigm 4.5 is specially engineered to cater to runners with low arches.
  • Most, if not all, of the elements and technologies of the previous Altra Paradigm have been retained in this version, save for some few minor tweaks that improve on comfort and fit. The knit upper, the Altra EGO midsole, and the FootPod outsole were all present in the Paradigm 4.0 and have now made their way into the Paradigm 4.5.

The Altra Paradigm 4.5 is a true-to-size running shoe for overpronators. The shoe offers adequate room along the midfoot to the heel and the toe box height is moderate, which makes the structure suitable for runners with low to medium foot volumes. The Paradigm 4.5 is available in Medium width for both the men’s and women’s versions.

The FootPod outsole technology from Altra comes in the form of a rubber layer that covers the underside of the sole unit. It is reinforced in the contact zones of the foot, giving joints and tendons optimum capacity for movement. The layout of the FootPod follows the shape of the human foot, which helps in flexibility.

The outline of the foot shape is done as grooves and shallow cuts that act as the gripping mechanism of the outsole that is adequate for road running.

Similar to the other Paradigm versions, this shoe employs the Natural Ride System (NRS). As the name implies, the NRS promotes natural mobility through metatarsal-specific shapes that assist foot mechanics. 

The stability features of the Altra Paradigm 4.5 are manifested by the GuideRail and the StabiliPod technologies. The GuideRail can be found in the arch part of the shoe and it is designed to realign and help the foot adapt, keeping it stable during the ride and reducing the fatigue. When the foot gets off track, the GuideRail helps by steering it back.

Meanwhile, the StabiliPod is a supportive tripod unit that enhances the stability zones of the foot—the medial and lateral sides of the forefoot and near the heel— to maintain correct foot pronation and prevent foot collapse. 

The main midsole component of the Paradigm 4.5 is the Altra EGO, a foam compound that intends to provide a fast and springy response. The Altra EGO is designed to perform more consistently compared to traditional foams, as it is better able to withstand extreme temperatures. The result is a high-energy ride powered by a lightweight and resilient cushioning. 

The Inner Flex is a set of grooves across the length of the shoe. These details give enough flexibility for longer running performance. Altra employs this feature in many of their other running shoes, such as the Superior 4.0.

A knit upper makes up the top cover of the Altra Paradigm 4.5. Aside from comfort and breathability, the material provides support to ensure a secure and seamless fit. It is engineered to feel like a second skin against the foot.