June 30, 2022

Adidas Adios Boost 2 – Review

With the track season over and more and more miles being put in for the much anticipated winter season, I have been paying more interest into the technology and running gear side of things. This has led me to do a review of my current trainers, the Adidas Adios Boost 2 racing shoes.

These trainers are now my third pair of the same make. I loved the first version of the Adios Boost’s and found the Adios 2’s even better and have recently upgraded once more to my second pair of the Adios 2’s; which in my opinion are the best flat shoe on the market.


Heel-to-toe drop

The first thing to note about these shoes is the heel-to-toe drop is at a minimal height of only 9.4mm.

The importance of the heel-to-toe drop within running shoes is one of the most highly debated topics when choosing your shoes. This measurement is the difference between the height of the heel of the shoe and the forefoot, with many people suggesting that the smaller this height the better.

For me, I feel that the drop on these shoes is perfect. Definitely not great enough to encourage heel striking, but enough to give a feeling of support and stability. This is a huge contrast to what you would see in the more built up Glide Boost shoes.

Heel drop comparison to the Supernova Glide Boost
Heel drop comparison to the Supernova Glide Boost

The feel of the shoe

How your shoes feel is very closely linked to the main bulk of the shoe and the midsole. What is special about these shoes (and now almost all of Adidas’ line of running shoes) is the Boost material which they use for the sole. This material is a specially developed material called Expanded Thermoplastic Polyurethane which Adidas developed alongside BASF – I will also do another post on the extent of this material.

The Boost material itself is said to improve your performance, however this is certainly something which when put into reality has very little outcome. From current studies, it is said that the Boost foam will result in there being a lower oxygen consumption of 1% for the same work done using the traditional EVA foam shoes.

Adidas and BASF developed Expanded Thermoplastic Polyurethane (Boost)
Adidas and BASF developed Expanded Thermoplastic Polyurethane (Boost)

With all the science out of the way, for the most part, the benefits of the Boost is that they don’t feel as hard, but give a rather bouncy and soft feel to running instead, which can only be a bonus.

The Upper

On the original Adios Boost, the upper of this lightweight shoe was the main downfall for me, however the new one created for the second version is without doubt the comfiest, best fitting upper to any shoe which I have worn.

It was the toe piece – along with a flimsy lace section – which caused excess movement of the foot whilst running as it was too large without any support. The improvement made on this shoe means that there is external support around the toe creating a really comfy feel to the whole shoe.

Comparison between the original version to the new one
Comparison between the original version to the new one

The sole

Along with the Boost midfoot material which I have already mentioned, it is the sole itself which gives the shoe great traction. With the majority of runners wearing this shoe running predominantly on their forefoot/ midfoot, the front rubber section Adidas created alongside Continental rubber works really well.

Although the Boost gives a softer feel, this shoe stills presents itself as a flat racing shoe which obviously provides very little support. This I have found tough when running on roads or over hard surfaces, where a more built up shoe like the Supernova Glide would be preferred.


I am now on my third pair of the Adios Boost shoes and I can definitely say that I have got my full wear out of them. It is recommended to replace your shoes after about 500km and I would definitely recommend to not run much further than this with these as there is definite deformation along the forefoot as it wears down over time.

The shoes have always held up really well but just faltered towards the end of their life as the forefoot rubber wears away to create a much harder and less supported feel.

The sole of my old pair after over 800km worth of running
The sole of my old pair after over 800km worth of running



Overall, I can definitely say I would recommend these shoes, they are my favourite pair that I have ever owned and are perfect for all distances. I primarily run on track and these have lived up brilliantly to the much faster sessions, but also shown to be great on roads and over marathons. They are the shoe of choice for the elite runners, the marathon world record was broken in them!


Despite a fair bit of wear and tear which they will show over the course of a lifetime, this is always to be expected and definitely shows up worse in this case with them being of a flat, neutral build.

Along with their quality, comes a very competitive price tag. Many companies make big money from selling over priced running shoes, advertising huge loads of ‘new’ technology; however, here, there basic shoe which is the perfect shoe for faster forefoot/ midfoot athletes fits perfectly for the job!

Overall rating: 9/10

You can buy the Adidas Adios Boost here.


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