• 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: 8.4oz
    Women: 7oz
  • Heel to toe drop
    Men: 8mm
    Women: 8mm

    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: 25mm
    Women: 25mm
  • Forefoot height
    Men: 17mm
    Women: 17mm
  • Width
    Men: normal
    Women: normal
  • Release date
  • Special editions
Show more facts


We spent 8.6 hours reading reviews from experts and users. In summary, this is what runners think:

6 reasons to buy

  • The upper unit offers a durable, stretchable, lightweight and breathable coverage to the foot.
  • Many testers appreciated the next-to-skin support of the upper to enhance the comfort of the wearer.
  • The 4D Foam is a reactive layer in the sock liner that conforms to the natural shape of the foot, making the fit more precise to the user.
  • The Charged Cushioning mid-sole sponges the impact energy from landing on the ground, then converts it to an energy that the runner can use.
  • Durable rubber can be found in crucial parts of the SpeedForm Fortis, which protects it from wear and abrasion.
  • This is a very lightweight running shoe.

3 reasons not to buy

  • Some runners felt that the heel area isn’t quite supported because they experienced a bit of discomfort.
  • Others experienced their foot slide forward easily while wearing it.
  • A few had cases of blistering around the ankle area.

Bottom line

The SpeedForm Fortis from Under Armour provided many runners with a robust running experienced, albeit through a lightweight, durable and responsive design. It’s a great option for daily running experiences of those with a neutral gait.


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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82 / 100 based on 7 expert reviews

  • 80 / 100 | Samuel Chua

    Getting into the running scene with the Under Armour Speedform Fortis

    The Under Armour Speedform Fortis is classified as a lightweight performance trainer. It is relatively lightweight at 238g and has an 8mm heel-to-toe drop.

    Upper & Fit

    The upper is soft and remarkably comfortable, which was great for middle distance runs. However, I would prefer more structure to the upper for longer runs.

    The tongue was constructed well, with sufficient thickness to prevent pressure from the laces while not taking up excessive space in the shoe. The shoe features an external heel counter together with a silicone rubber lining around the ankle to lock the ankle in place while running.



    The shoe runs true to size, but those with narrow feet might have to size down half a size.

    Midsole Technology

    The Under Armour Speedform Fortis features a dual-density midsole.

    The softer charged midsole (Black) is “encapsulated” by a firmer and more responsive Micro G foam (White). This resulted in an extremely unique and fun ride. The shoe is also flexible in the forefoot.

    Outsole Durability

    As for the outsole, orange rubber patches are placed in the centre of the forefoot as well as the heel.

    The uncovered areas of the midsole wore out decently fast, with some areas of the outsole flattening out completely after 200km of wear.


    The sole unit after 200km

    Type of Workouts

    The Under Armour Speedform Fortis excels on the road. It is best used for tempo workouts ranging from 10km to half-marathons.


    I found several issues with the shoe. Firstly, the traction was far from great. It was very slippery on wet ground, and lacked grip on trails.

    Secondly, the sock liner was too slippery. Over distances of 10km, I almost always came away with a bleeding toenail due to my toe jamming into the front of the shoe.

    I disliked the rubber at the heel cup. The original purpose of the rubber was to lock down the heel and prevent movement. However, I encountered blisters when I wore the shoe barefoot or with ankle socks.

    Another dislike I had was that there is unnecessary weight at the heel. If one looks at the shoe from the top, it can be observed that the rubber at the heel is wider.

    This was meant for stability for heel strikers or for gym workouts. However, as a mid-forefoot runner I found that this unnecessary weight could have been cut down further.



    My biggest dislike was the breathability of the upper.

    I am unsure if its due to the constant rubbing against the sock liner that generated a lot of heat, but my feet felt like they were on fire at the 15km mark of a half marathon.


    The Under Armour Speedform Fortis is a moderately lightweight trainer suited for casual runners who want a fun ride on the roads.

    This expert has been verified by RunRepeat. Reviews are neutral, unbiased and based on extensive testing.

  • 80 / 100 | Runner's World

    The Fortis is designed as a “fitness” shoe, meaning it will transition nicely from a run to side lunges or plyometric hops, due to its wide, flexible sole that cushions in multiple directions. 

  • 75 / 100 | Runner's World

    The Fortis is designed as a “fitness” shoe, meaning it will transition nicely from a run to side lunges or plyometric hops, due to its wide, flexible sole that cushions in multiple directions.

  • 88 / 100 | Believe in the Run

    The Speedform Fortis is a really comfortable, light neutral trainer.

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Updates to Under Armour SpeedForm Fortis

  • The Under Armour SpeedForm Fortis features the brand’s Charged Cushioning system that performs better than the regular midsole foam. It delivers the great combination of responsiveness and cushioning for a more enhanced running performance.
  • The upper of the SpeedForm also offers new innovations. It features the ArmoutVent mesh upper that provides maximum breathability. It is light, quick-drying and durable enough to stand the damaging elements on the road. It also features the seamless heel cup that delivers locked-in fit. It also has an adjustable lock donw heel strap that improves the overall fit of the shoe. Lastly, the 360° reflectivity gives increased visibility while running on low lights.

Under Armour SpeedForm Fortis size and fit

The SpeedForm Fortis is true to its size. It has a normal midfoot and feels snug in the heel. The forefoot is also spacious enough for toe splay. This shoe accommodates a wide range of runners especially those with medium-sized and slightly wide foot. The width is also normal.


The outer sole of this shoe uses the solid rubber compound that gives reliable traction on varied surfaces and it gives protection to high wear areas for greater durability. The flex grooves are strategically designed to give flexibility, allowing the forefoot to work more naturally.


The Charged Cushioning System is found in the midsole of the shoe. It delivers a well-cushioned and responsive ride. This cushioning is reliable enough to deliver a perfect blend of cushioning and responsiveness for a smoother transition. The 6mm 4D foam gives added cushioning and enhanced fit.


The upper of the Under Armour SpeedForm Fortis uses a breathable mesh that delivers superior breathability. It also has moisture-wicking capacity and very stretchable, delivering an adapative fit. The Total Speedform technology is also used, allowing runners to focus more on the running mechanisms rather than on the footwear itself. It also features the 360° reflectivity for an increased visibility on low-light conditions.