• 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: 10.4oz
    Women: 8.7oz
  • Heel to toe drop
    Men: 10mm
    Women: 10mm

    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.

  • Width
    Men: Standard
    Women: Standard
  • Release date
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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84 / 100 based on 6 expert reviews

  • 88 / 100 | Running Competitor

    The medial support piece is firm, but it still flexes with the shoe and the other foam that surrounds it.

  • 85 / 100 | Doctors of Running

    The ride is smooth and fast.

  • 79 / 100 | Solereview

    Nike Structure dumps its dual density midsole set-up for the first time in three years, and moves to a triple density set-up. The idea of using three different foam densities together in a stability shoe isn’t a new one; current shoes like the Brooks Adrenaline GTS 14 and Beast 14 feature that.

  • 86 / 100 | Running Warehouse

    The Structure 18 is a great option for runners looking for one of the most supportive midsoles in its class while offering a moderately firm underfoot feel throughout the gait cycle.

Show moreless reviews
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Updates to Nike Air Zoom Structure 18

  • Nike dishes out some serious modifications in the 18th iteration of the Structure. The most notable change in the shoe is the ride as it is back to its really stable form. Nike goes back to a tri-density midsole design to bring a nice balance of cushioning and stability. Foremost in the change of the ride is the presence of a very stiff EVA that extends from the heel to the midfoot to really curb the excessive inward roll of moderate overpronators.
  • The outsole sees a major revamp also. In this version, there are now hexagonal lug patterns that are quite aggressive and large. Obviously, the aim is to enhance the grip on different surfaces. Besides the changing of the lug pattern, the material has been changed as well. The forefoot uses a softer blown rubber as opposed to the hard-wearing version used before. Midfoot to heel rubber featuring recycled rubber takes place of the BRS 1000. While durability remains just about the same, the new material is more friendly to the environment.
  • Another contributing factor to the change of the Structure 18’s firmer ride is the incorporation of the crash pad to the outsole. There is lesser compression upon strike, so the runner no longer feels the squeeze upon landing.
  • The smooth transition is enhanced by two slices of rubber beginning from the lateral side of the heel to just below the forefoot. As each strip is unbroken, the runner gets help through the gait cycle as weight is transferred quickly from the heel to the toes.
  • The upper also introduces a new material that covers the entire shoe. It looks like a split between the Flyknit and engineered mesh. The beauty of this material is it adds structure and support to the upper minus the use of overlays, which are completely removed in this version, save for the printed Nike logo.
  • Lastly, the Flywire cables appear in the 18th version of the Structure. From the midsole, they pass through tiny slits of the engineered mesh and are directly connected to the laces. Hence, a simple tug of the laces enables the cables to cinch and personalize the fit.

Nike Air Zoom Structure 18 size and fit

The fit of the Nike Air Zoom Structure 18 is still largely similar to the past model, except for a more forgiving forefoot due to the removal of all overlays. There is more room in the forefoot while the heel and the midfoot have very comfortable locked down feel. Shoe width ranges from narrow to extra wide in this shoe. Sizing runs true.


The outsole coverage is composed of two rubber compounds. Used in the forefoot is a soft blown rubber with the hard recycled rubber covering the rest of the shoe. Nike uses hexagonal lugs in the forefoot with deep flex grooves for traction and flexibility. The midfoot introduces a continuous design of rubber starting from the lateral side of the shoe going towards the opposite or medial side. Crash rails, these are called, and enhances the smooth transition of the shoe.

The outsole unit of the shoe has been modified in the Structure 22 to deliver more durability and reliable grip on varied surfaces.


The midsole uses a tri-density foam setup. On the lateral side of the shoe is a soft rubber while the inner side is made of ultra-stiff EVA. This very hard foam that extends from the heel to the medial side is the main factor that holds off overpronation. Nike also mixes parts of the midsole foam in the middle with the hard medial foam to prevent that jarring feeling from a very stiff medial support. The middle foam runs the length of the shoe for better transitions. In the forefoot and the heel, the patented Zoom Air bags are located. It provides that snappy response, particularly for midfoot and forefoot strikers.


The upper features the new engineered mesh that offers good structure as Nike removes the overlays in this model. It is distinctly a combination of mesh and flyknit with just enough give that the support is not constrictive. An inside toe bumper gives form and protection in an otherwise very minimal forefoot. The tongue and the collar are not very thick, but still very plush. Nike uses an internal heel stiffener to provide the stability. The Flywire cables that are connected both to the midsole and the laces hold the foot in security. For a little more cushioning, a plump and plush insole is included in the Structure 18.