• 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
    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: 10oz
    Women: 9oz
  • Heel to toe drop
    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.

  • Heel height
    Heel height
    Men: 29mm
    Women: 29mm
  • Forefoot height
    Forefoot height
    Men: 19mm
    Women: 19mm
  • Width
    Men: normal
    Women: normal
  • Release date
    Release date
Show more facts


We spent 6.9 hours reading reviews from experts and users. In summary, this is what runners think:

6 reasons to buy

  • This shoe features a rip stop mesh upper that is breathable and protective at the same time.
  • Most runners applauded the aggressive gripping lugs, which offer superior stability and grip while running off-road.
  • Some runners noticed the added stability of this shoe without adding too much weight.
  • It features durable leather overlays that provide stability and superior durability.
  • Based on some reviews, runners were impressed with the shoe’s 4D foam sock liner for a custom fit and reducing slippage.
  • The outsole design of the Under Armour Assert Grit was inspired by mountain bike tires, which provide superior cushioning, traction and durability.

3 reasons not to buy

  • The narrow forefoot of the Assert Grit made some runners unhappy.
  • Some runners are disappointed with the very thin padding on the tongue.
  • Based on some reviews, the overall durability of the shoes needs improvement.

Bottom line

The Under Armour Assert Grit is a neutral training shoe ideal for trail running. It features cutting edge technologies that provide superb cushioning, stability and grip.


Updates to Under Armour Assert Grit

  • The Under Armour Assert Grit features the patented Under Armour Micro G midsole foam that delivers good amount of cushioning for impact protection and powerful toe-off. This notable midsole foam provides an enhanced running performance.
  • Another great innovation this shoe offers is the bike tire-inspired outsole. The sole unit delivers reliable traction on varied surfaces and it is durable enough to withstand the damaging elements of outdoor running.

Under Armour Assert Grit size and fit

The Assert Grit is to true to its size. Through the stiffer heel cup and midfoot lockdown, this shoe gives an amazing fit from the heel to the forefoot. There is enough room for toe spread. This shoe is available standard D width for men’s and B for women’s.


A bike tire-inspired outsole is what the Assert Grit offers. It is specifically designed to deliver maximum traction on varied surfaces and durability. The solid rubber is also strategically placed on high impact areas to add more muscle for shoe endurance.


The midsole of the shoe uses the brand’s premium Micro G cushioning foam. It delivers right amount of cushioning and comfortable fit. It also features a sockline that runs the length of the shoe for added cushioning and enhanced fit.


The dual mesh material comprises the upper built of the Under Armour Assert Grit. It delivers a combination of breathability and protection. The overlays add security to the midfoot while the padded ankle collar and tongue provide added comfort.