Adidas Terrex Speed Ultra: go fast, go long 

Terrex Speed Ultra is a unique trail running shoe from Adidas. It can be best described as a cushioned racing flat for mixed terrain. Avid runners have compared it to the trail version of SL20 or Boston 9.

If you prefer the beefier, max-cushioned versions, consider Hoka Speedgoat or Inov-8 TrailFly Ultra G 300 Max.

What is it best for?

You will get the most use out of this trainer in the following:

  • tempo workouts: hill repeats, fartleks, etc.
  • races: any distance up to an ultra

Highlights of the Terrex Speed Ultra

  • Boost & Lightstrike cushioning combo: one ensures plush landings while the other keeps the weight down and helps you spring forward
  • Rocker geometry: a slight upward curve in the forefoot aids with a push-off
  • Continental outsole: one of the most durable rubber compounds in the industry 
  • Gravel bike-inspired lugs: will bite anything (except mud)

Other helpful features include reflective prints, extra eyelets for a tighter midfoot lock, and removable insole

Tested by Tom Evans

A British ultra-runner Tom Evans was involved in the production and testing of the Adidas Terrex Speed Ultra prototypes. He had provided the company with consistent feedback for two years until the final version got approved.

Tom also won the 102-km Tarawera race wearing the shoe. He set a new record of 8h 3m 26s that day.


How Adidas Terrex Speed Ultra ranks compared to all other shoes
Top 10% trail running shoes
All trail running shoes
Top 6% Adidas running shoes
All Adidas running shoes
Top 11% neutral running shoes
All neutral running shoes


The current trend of Adidas Terrex Speed Ultra.
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.