Welcome to my review of the Adidas Adizero Adios Boost 2. I’ve had the Adios Boost 2 for over 6 months. However, during that time, I’ve only run a little over 50 miles in them (and that includes 10 miles from this past week). Why did it take me so long to run over 50 miles in these shoes? Keep reading to find out.
The Adidas Adizero Adios Boost 2 is a popular road racing shoe. With its weight and heel stack height, it is in the category of a long distance racer as opposed to a 5K racer (although it could be used for that also). The Adios Boost 2 is a popular shoe among elite marathoners.
But before we get to the review, let me tell you the story of how we (the Adios Boost 2 and I) first met.
When I saw the Adios Boost 2 in a local running shoe store, it was love at first sight. For some reason, I can’t explain it, I had to have these shoes. The shoes were sitting on the rack with the other shoes, but the other shoes disappeared; they may as well not have been there. Are the Adios Boost 2 shoes even in my league? Should I try and pick them up? I walked up nonchalantly, trying to play it cool. But inside, my heart was pumping. My palms were sweating.
I tried to speak but my throat was too dry. I didn’t know what to do or say. Should I ask how much they cost? Should I ask how they feel, whether they are firm or soft? Should I just try them on or is that too forward? Maybe I should ask for its size first?
Finally, a clerk walked over and saved me from embarrassing myself (further). He said, “You look like you’re interested in these shoes, let me introduce you.”
Nothing like a good wing man. But I think I could have handled it. I was playing it smooth.
Did I mention that my wife was standing right behind me the entire time? And believe it or not, it wasn’t awkward at all. When I put the shoes on she said, “Wow, those look great. You should definitely bring those home tonight.”
Am I lucky man or what?
Without further delay, onto the review.
First, a summary of the shoe specs from runningwarehouse.com.
- Weight: 8.1 oz (size 9)
- Stack Height (Heel): 23 mm
- Stack Height (Forefoot): 13 mm
- Category: Neutral, Racing
The Adios Boost 2 is an expensive shoe that I don’t see on sale very often. Right now, you can pick them up for around $140 on Amazon. However, the shoe has been out for awhile, so you may be able to find a sale if you look hard enough.
What I like
From the intro, it is probably obvious that I like the looks of this Adios Boost 2. I don’t mean to be shallow, but just look at it. It’s beautiful. I love its classic simplicity. The blue-on-blue color is great. There is also a grey-on-grey option on the Adidas website that is snazzy as well.
Obviously, looks aren’t everything. But if you’re one of those people that like to downgrade your running shoes to casual shoes, then it’s a nice bonus. This shoe would look great with jeans or casual shorts.
The upper is a nice combination of a type of synthetic suede and lightweight breathable mesh that maintains that retro look. Overall, it’s a great looking shoe.
(2) Fit (for a racing shoe)
Overall, the Adios Boost 2 has a snug fit, which is what you expect in a racing shoe. The mid-foot and heel are perfectly snug. The forefoot, is quite tapered and might be a little tight on the toes, but not to the point of being uncomfortable. If you purchase these shoes, just don’t expect room for toes to splay. I normally where a size 9.5 and a 9.5 was just about right in this shoe.
The forefoot was firm and responsive, just what you would expect in a racing shoe.
The Boost material runs the full length of the shoe. Adidas’s marketing says that the Boost foam provides superior energy return over traditional foam. In addition, the Boost foam is supposed to maintain its responsiveness better in colder temperatures and over longer periods of use. I can’t attest to this yet.
This is the only shoe I’ve tried with the Boost foam. There isn’t much Boost foam in the forefoot, so as a forefoot striker, I can’t definitively say that I noticed it that much. However, when I forced a heel strike, I could feel some of the “springiness”. It does seem to provide a little something extra.
In addition to the Boost midsole, the outsole is made up of a grippy rubber that helps create a smooth and efficient toe off.
(4) Ride at faster paces
This is where the Adidas Adizero Adios Boost 2 shines. When you pick up the pace, you can really feel the shoe’s responsiveness. The Adios Boost 2 just seems to pop off the road. It is a great option for speed work and longer distance races. I would use it for anything between a 5K and half marathon.
What I don’t like
(1) Forefoot cushioning
At just 13 mm, there is not a lot of cushioning in the forefoot. As a forefoot striker, this is fine for me for speed workouts. As mentioned, I could also see using these for a half marathon race. But in general, I prefer a little more cushioning for a full marathon. Obviously, many people do use these for marathons so it depends on your preference.
(2) Heel-toe drop (offset)
The heel, on the other hand, has a good amount of cushioning, hence the 10 mm offset. This will help in longer distance runs where one’s form may break down and that little extra cushioning in the heel would help. However, if you don’t land on your heel, then this won’t help you much.
Unfortunately, during slower paced runs, the heel seemed to get in the way of my stride slightly. It wasn’t pronounced, but it was noticeable and just enough to make me not forget the shoe was on. That is what I normally look for in a shoe. Do I forget I’m wearing it? That didn’t quite happen with this shoe and I think this was one of the reasons.
(3) Forefoot outsole design
As mentioned above, the forefoot was firm and responsive, as it should be in a racing shoe. The primary rubber outsole runs through the middle and edges of the forefoot with only small pieces of rubber elsewhere. This creates a sort of ridge through the center of the mid-foot and forefoot. Oddly, there were times I thought I could feel this ridge when landing, especially at slower speeds. It was subtle, but it was there. At first, I thought that maybe my sock had gotten bunched up, but after adjusting several times, I do feel like there was a slight ridge through the center of the forefoot. Maybe it is just me as I haven’t noticed others comment on this. I would be interested to hear if anyone else had this problem. Again, it wasn’t enough to be a huge issue, but it was noticeable and did not allow me to forget that the shoes were on my feet.
(4) Ride at slower paces
The above three items really feed into the ride. Whereas I liked the ride at faster paces, I didn’t quite like the ride at slower paces (9+ min/mile). I just couldn’t get the shoe to feel natural. The forefoot landing felt too firm and stiff. The heel was too pronounced. I just didn’t think it was a fluid and smooth ride. Granted, these are racing shoes so slower paces aren’t what these shoes were designed for.
Lastly, the Adidas Adizero Adios Boost 2 is on the pricey side. But the important thing is whether it is worth the price. That is something you will have to decide for yourself. It is possible that the Boost material will compress less and maintain its responsiveness over time more than other shoes with the typical EVA midsole, but I haven’t used them enough to know for sure. In my opinion, there are other long distance racing flats that fill a similar niche and are less expensive. For example, the New Balance RC1400, the Nike Zoom Streak, and the ASICS Gel-Hyper Speed are other, less expensive, options to consider. But in my opinion, none of them look as good as the Adios Boost 2, although the RC1400 looks pretty good.
Would I recommend this to a friend?
Despite liking how the Adidas Adizero Adios Boost 2 looks, this shoe just doesn’t hit a sweet spot in my training to be used that often. It is clearly a distance road racing shoe, but it would not be my first choice for a full marathon. I prefer a shoe with a little more cushioning in the forefoot like the Pearl Izumi EM Road N1 V2 or New Balance Fresh Foam Zante.
I would use the Adios Boost 2 for a half marathon, but I haven’t run a lot of road half marathons lately. Most of my races have been marathons or longer trail ultras.
I could use them for the occasional speed work, but lately I have been mixing that up with an old pair of Saucony Fastwitch (which I am trying to wear out) and some newer shoes I’m trying to break in.
In addition, I usually alternate weeks between hill repeats (on trails) and speed work, so right now, I’m probably only getting between 10 and 15 miles of road speed work per month.
Lastly, on my easy run days, I am usually running at a slower pace than feels natural in these shoes.
So as you can see, the Adios Boost 2 just doesn’t hit a sweet spot in my rotation to get regular use. In addition, it just wasn’t a shoe I could forget I was wearing, which to me is the most important part of a shoe.
But this may not be the case for others. For those that normally run at faster paces, do a lot of track work and not a lot of trails, then this might be a good shoe to consider. If you don’t need a lot of forefoot cushioning for a marathon, this would be a great choice as a distance racer.
So, bottom line, I’ll continue to use these and maybe put a few miles on them each month during the occasional speed work. At this pace, they will probably last me a few years. But would I purchase them again knowing what I know now — probably not.
So despite being love at first sight, it wasn’t a relationship meant to last.
However, if the Adidas Adizero Adios Boost 2 sounds like it has a place in your running rotation, please consider following this link to Amazon. Purchases made through this link help support this site. Thanks!
As always, comments are appreciated. Let me know of any thoughts or questions below. I hope you found this review useful. Thanks for reading.