.Hoka spent years researching and developing running shoes capable of both ultra-long distances and high speeds, eventually creating this carbon plate technology. But a standard launch wouldn't have been exciting enough to clearly convey its significance. So, they launched Project Carbon X, inviting Hoka athletes to compete and break the world record for the 50-mile race—approximately 80 km—all wearing a pair of Carbon X. The world record was 4:50:51, set 37 years ago—before I was even born. Breaking it would show runners worldwide just how incredible these shoes are. And the result was: Jim Walsmley set a new world record of 4:50:07, 44 seconds faster than the previous record, using this Carbon X model.
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The reception in Thailand was fantastic upon launch, but very few pairs were initially available. I hope they become easier to find from now on. Now, let's get into the review of how they perform.
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Specs
35 mm heel height, 30 mm forefoot height, 5 mm drop
Men's size 9 US weighs 250 grams
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The upper is made of single-layer engineered mesh. It feels thin yet tough and strong, unlike the mesh on other shoes. Breathability is also quite good, thanks to the ventilation holes across the entire foot and the single-layer fabric. The flat shoelaces look ordinary but are very strong.
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The heel cup looks plain, but it locks the heel in quite well because it isn't heavily padded.
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The midsole features Profly X technology, which uses a special foam blend exclusive to the Carbon X. It feels soft at the heel for a comfortable landing and provides a responsive, propulsive feel at the forefoot during toe-off. It also has a distinctive toe-spring design that lifts the forefoot more than other models. This is Profly X technology.
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Below that is a carbon plate that runs from the heel to the forefoot, maintaining the shoe's curved shape. This makes the foot strike smoother than other models and prevents energy loss during landing and toe-off. Whatever energy you put in, you get it back, creating a sensation of continuous forward momentum while running.
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When I first tried them on, I was quite excited because it felt like standing on a rocking chair. The curvature and carbon plate made me feel like the shoes would keep propelling me forward even when I was just standing still. The next question was: wouldn't they be tiring to run in? No, because once you get used to them, they remain within a manageable range. They are comfortable for slow runs and perform well at faster paces.
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The outsole is made entirely of rubberized foam, which is lightweight and offers good grip. Take a close look, and you'll see small lug patterns across the entire sole. They might look like they wouldn't grip the road well, but I can tell you they offer excellent traction on both dry and wet roads. Although the tread wears down over time, the rubberized foam still provides a fairly grippy hold on the ground. I've probably run nearly 200 km in this pair.
Who are they for?
I think Hoka has perfectly answered the brief for a fast shoe designed for long distances. The sole is firm yet provides good impact support—not so soft that it feels mushy, nor so stiff that it wastes energy. The carbon plate also makes the toe-off motion highly responsive. But even at slower paces, the Carbon X is still comfortable and performs well, even if it isn't quite as comfortable as the Clifton 6. However, if you want to go fast over shorter distances, the Rincon is a better choice because it is much lighter.
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Buy shoes from Runnercart with free size exchanges until they fit perfectly.
If you're not satisfied, we'll issue a full refund.
Click here to buy the Hoka One One CarbonX
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Choosing the right size
Place your foot on a piece of paper, measure its length, and add 1.5 cm to find the right size. For those with a wide forefoot, add 2 cm, as this model does not come in a wide version.
Hoka One One CarbonX Review by Admin Chai
The Runnercart website's running team
December 5, 2019
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