Verdict from 100+ user reviews

7 reasons to buy

  • The SpeedForm Fortis 2 is very light, according to most reviewers.
  • The price is reasonable, based on several comments.
  • 5 different color options.
  • Some runners have used it for gym sessions.
  • The shoe looks good enough for everyday wear, as noted by a few.
  • A handful loved the shoe’s flexibility.
  • Some runners were very comfortable in the 2nd version of the Fortis.

5 reasons not to buy

  • A significant number of runners suffered blisters in their ankles.
  • The traction is not that good on wet surfaces.
  • More than a few runners who have had the chance to use the original Fortis felt that the updated model lacks the support that was sufficiently by its predecessor.
  • The material is so much stiffer in this version compared to the previous model, according to a large number of fans of the original Fortis.

Bottom line

The SpeedForm Fortis 2 is a neutral runner that is quite versatile. It is suited best for mid-distance or tempo runs and can double as a casual wear. The shoe has a decent arch support and exceptional flexibility in a lightweight package. Under Armour mixes performance and style rather well in this shoe.

Tip: see the best running shoes.

Good to know

  • Under Armour serves only minor modifications in the 2nd coming of the SpeedForm Fortis. The most obvious change is a knit-like mesh that is softer and more flexible. It gives the shoe an upper that frames the runner’s foot quite well.
  • Another clear change is the heel counter. While this was located outside in the original version, Under Armour places the heel counter inside this time around. It gives the shoe a more streamlined look while maintaining the same heel support and security.
  • Lastly, the footprint is a bit wider in this shoe for enhanced stability. The shoe offers more room all over with this enhancement.

The fit of the Under Armour SpeedForm Fortis 2 mainly resembles the original version, except that this has a more sock-like fit due to the adaptive mesh upper. There should be no complaint for those with slightly wider feet as the comfortable and roomy toe box remains there for the taking. The heel and the midfoot have sufficient locked down support. The shoe runs true to size.

The outsole uses numerous square patterns that are separated by moderately deep flex grooves. This design gives the 2nd iteration of the SpeedForm Fortis excellent flexibility. A sturdy carbon rubber is located in areas prone to wear while blown rubber is utilized mostly around the forefoot and midfoot for better traction.

A full-length midsole design using two of Under Armour’s best cushioning technologies lies in the heart of the SpeedForm Fortis 2. Under Armour places the Charged Cushioning right on top of the Micro G foam for a superb mix of responsive cushioning and support. The full-length design also helps the runner move efficiently and quickly through the gait cycle. The Micro G foam is also used in the SpeedForm Fortis 2.1 and other running shoes from Under Armour.

The knit-like upper gives a very precise fit in comfort and support. It is also quite breathable for a cool and dry run. The seamless upper reduces the possibilities of hot spots and irritation. Under Armour still uses a thin tongue and collar in the SpeedForm Fortis 2. A seamless heel counter keeps the foot in place. Enhanced cushioning and support are provided by a fixed, molded sockliner with moisture-wicking features.


How Under Armour Speedform Fortis 2 ranks compared to all other shoes
Bottom 16% road running shoes
All road running shoes
Bottom 16% Under Armour running shoes
All Under Armour running shoes
Bottom 16% neutral running shoes
All neutral running shoes


The current trend of Under Armour Speedform Fortis 2.
Compare to another shoe:
Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.