Arch support
M: 213g | W: 213g
Heel to toe drop
M: 3mm | W: 3mm
Heel height
M: 15mm | W: 15mm
Forefoot height
M: 12mm | W: 12mm
Widths available
M: Normal - D | W: Normal - B
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Shoes best for road, track and light gravel. See the best road shoes.


Shoes best for trail, off road, mountains and other unstable surfaces. See the best trail shoes.

Good to know

As long as you stick to the road or path, and if you want just one running shoe, buy a road running shoe.

Neutral / cushion / high arch

Shoes for runners who does not need any additional arch support (Around 50% of runners). Best for people with high or medium high arches. See the best neutral shoes.

Stability / overpronation / normal arch

Shoes for runners who needs arch support (Around 45% of runners). Best for runners with a normal arch. See the best stability shoes.

Motion control / severe overproanation / flat feet

Shoes for runners who needs a lot of arch support. Best for runners with flat feet. See the best motion control shoes.

Good to know

- Rule of thumb: If in doubt, buy neutral shoes to avoid injuries.
- More about arch support in this video.
- Find your arch type by following steps from this video.

Daily running

Cushioned shoes for your daily easy running. Great comfort. See best shoes for daily running.


Lightweight shoes good for races, interval training, tempo runs and fartlek. Here are the best competition running shoes.

Good to know

If you want just one pair of shoes, buy a shoe for daily running.

The height difference from the heel to the forefoot, also known as heel drop, toe spring, heel to toe spring or simply drop.

There are many opinions about what a good heel drop is. We do not recommend any in particular. Lean more in this video.


We spent 9.6 hours reading reviews from experts and users. In summary, this is what runners think:

7 reasons to buy

  • The upper unit of the Road-X-Treme 220 uses synthetic mesh to deliver lightweight and breathable coverage.

  • The forefoot section has a synthetic webbing that secures the foot responsibly.

  • The 3mm foot bed adds more cushioning to the immediate underfoot.

  • The low-level cushioning caters to neutral and minimalist runners.

  • The platform is able to conform to the contours of the underfoot, providing exact support that’s tuned to each individual runner.

  • A smooth ride and reliable grip on the asphalt is afforded by the outsole rubber material.

  • The Inov-8 Road-X-Treme 220 has a lightweight nature.

2 reasons not to buy

  • A few complaints were directed at the low-profile mid-sole, which apparently didn’t deliver cushioning for long-term running sessions.

  • Some of the testers felt that the collar and tongue needed more padding to cushion the upper side of the foot more.

Bottom line

Featuring a low-profile design and a lightweight nature, the Road-X-Treme 220 from Inov-8 is a running shoe that’s great for daily running sessions, as well as exercises. Made for neutral and minimalist runners, it allows natural movement to take place while also ensuring protection and support all throughout.

World wide, Road-X-Treme 220 is in the top 50% most popular running shoes. The brand, Inov-8, is the 15th most popular.

Map: Shows popularity per continent based on 1010 shoes


4.7 / 5 based on 8 ratings

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Expert reviews

Experts are running shoe geeks, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

Are you an expert? Apply to contribute here.

72 / 100 based on 3 expert reviews

  • 65
    FellrnrLevel 5 expert
    by Fellrnr
     While it could be considered relatively light weight in comparison with many of the shoes, I believe you can do much better, either getting vastly more cushioning for the same weight, with the same cushioning for a vastly lower weight.
  • 81
    StanLevel 3 expert
    by 9 Run
    Inside,the upper feels nice and plush.and the ride is even and smooth..something that I've come to expect with each pair of Inov-8s.
  • 83
    We are RunnersLevel 1 expert
    by We are Runners
    Providing slightly more cushioning with the 4mm heel drop than the more barefoot shoes, such as the 155s, this shoe is perfect if you need a little more forgiveness, but forgiveness done with subtlety. 
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  • Richard Shop Zappos
    Good cushioning in that footbed, along with a really shock absorbing EVA midsole to give you tons of energy-return with every stride.

Updates to Road-X-Treme 220

If speed is what the runner is looking for, then the Inov-8 Road-X-Treme 220 is capable of providing just that. It’s a lightweight shoe that’s meant to allow the wearer to move naturally through the gait cycle while making sure that the foot is protected and well-cushioned. A near-flat platform brings a barefoot-like running experience, while greatly paves the way for the wearer’s natural biomechanics to run its course. It’s comfortable and agreeable to how the runner performs.

The upper unit of this running shoe makes use of breathable fabrics in order to keep the foot well-ventilated. Air is important in providing comfort to the foot because it maintains a dry and cool interior environment. A synthetic webbing locks the foot down and keeps it in place, preventing wobbliness or accidental shoe removals.

Injected foam is used in the mid-sole unit of the Inov-8 Road-X-Treme 220. It delivers resilient cushioning, as well as memory retention. Contoured support, which follows the exact shape of the wearer’s foot, is provided. The mid-sole also has a rigid lever arm that propels the runner forward with each step.

A mix of rubber and EVA makes up the main outsole unit of this running shoe. Aside from protecting the rest of the sole unit from wear and tear, it also adds a bit of cushioning. Flex grooves allow the platform to be more in tune with the natural capability of the foot to bend, especially during the toe-off phase.

Road-X-Treme 220 size and fit

The Inov-8 Road-X-Treme 220 has a standard running shoe length, though the sizing follows the measurements for men. To get the equivalent for women’s sizes, 1.5 sizes should be deducted from the counterpart. The available width is medium, so this shoe accommodates those with medium sized feet. Its semi-curved shape follows the natural curvature of the human foot.


The Sticky Fusion Compound is an outsole layer that’s made from a mixture of Ethylene vinyl acetate compound and synthetic rubber. Aside from delivering protection against wear, it also adds a bit more cushioning to the foot. Traction is also part of its purpose.

The DSP Outsole are sets of micro-pods that are triangular in shape. Placed in certain areas of the outsole, they heighten the traction and flexibility the runner gets when wearing the Road-X-Treme 220.

The Meta-Flex groove in the forefoot are encourage natural flexibility, which is helpful when it comes to facilitating a more effective toe-off.


Injected EVA is a full-length foam unit that’s responsible for the cushioning that foot receives during each step. It doesn’t break down easily, so it stays effective even after many uses. It has a memory retention capability, basically following the contours of the underfoot in order to give structured support.

The 1-Arrow Shock-Zone™ is a molded mid-sole arrow system that makes the platform highly responsive to the natural movements of the foot. The low-level cushioning is close to the ground and almost follows a barefoot-like running experience.

The Dynamic Fascia Band is a rigid lever arm that runs from the rear to the front of the shoe. It works as a way to propel the runner forward during each toe-off.


Synthetic Mesh is a lightweight material that’s meant to deliver breathable coverage to the wearer. Air is encouraged to enter the shoe in order to keep the foot cool and dry during the running sessions.

The Met-Cradle is a synthetic webbing in the upper that secures the foot well. It essentially wraps around the foot and keeps it in place, preventing wobbliness and accidental shoe removals.

Additional cushioning is given by the 3mm foot-bed.


Comparison to category means
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