Our verdict

The React Infinity Run Flyknit 3 from Nike is the brand's easy-day running shoe. With a generous cushion, we found it comfortable to eat up lots of miles on the pavement. And if you're looking for a lockdown fit that will keep you stable from the first stride to last, this shoe won't disappoint. Overall, we recommend getting the Nike React Infinity Run Flyknit 3 if you want a solid daily trainer that's perfect for newcomers and seasoned runners alike.

Pros

  • Snappy toe-off
  • Comfortable all-day
  • Stable when legs are tired
  • Smooth transitions
  • Comfortable fit
  • Roomy toe box
  • Grippy on wet roads and light trails
  • Also for walking and gym training
  • Perfect for beginners

Cons

  • Lacks responsiveness
  • A tad heavy
  • Too expensive

Audience verdict

87
Great!
  • Top 4% most popular running shoes

Size and fit

Size

Nike React Infinity Run Flyknit 3 is slightly small (271 votes).

Owners of this shoe, how does this shoe fit?

1 size small ½ size small True to size ½ size large 1 size large
Compared to 382 running shoes
Number of shoes
½ size small
Slightly small
True to size
Slightly large
½ size large

4th version of the Infinity Run

Who should buy the Nike React Infinity Run Flyknit 3

Cop the Infinity Run Flyknit 3 if you are: 

  • looking for a road running shoe for heavy, high-mileage training runs
  • a fan of the second version of the Infinity Run Flyknit and want something similar
  • big on cushioned running shoes that can double for walking and gym training

Nike-React-Infinity-Run-3-outdoor

Who should NOT buy it

If you're on a budget, we advise sticking with version 2 of the Nike React Infinity Run FK instead. There's not much difference going on, save for the looks and more padding. If you want a shoe from a different collection, the Nike Pegasus 38 is not only cheaper; it also performs similarly for $40 less. 

If you want a shoe that is springy and pampering at the same time, we highly recommend the Nike Invincible Run. And if it's a lighter alternative you're after, the PUMA Velocity Nitro 2 won't be a letdown.

Nike-React-Infinity-Run-3-lab-review

Let the Infinity Run FK 3 spoil you with comfort

A more supportive fit is the main highlight of the Nike React Infinity Run Flyknit 3. The shoe features a more padded ankle collar and heel.

Nike-React-Infinity-Run-3-collar-padding

Even more, it has a thicker Flyknit upper and Flywire cables for a better foothold. 

We measured the shoe's tongue thickness at 7.9 mm. This is a considerable amount of padding compared to the average 6 mm.

Not a shoe for hot days

Because of the thicker tongue and upper, the shoe doesn't let a lot of air pass through. It is noticeably warmer than daily trainers on average.

A seamless ride from the Infinity Run Flyknit 3

Although it's not the lightest daily trainer on the market, this Nike shoe doesn't feel sluggish thanks to its smooth transitions. Even better, the more we ran on our toes, the nicer and more seamless the transitions became.

Takes care of the feet

Think of the Nike Pegasus but softer. That's the Infinity React Run Flyknit. It's not a squishy shoe by any means but it preserves a good balance of firmness and softness. 

Nike-React-Infinity-Run-3-sole-durometer

Based on our midsole durometer measurements, the Infinity Run 3 is MUCH softer than the average. At 15.0 HA, it is 60% plusher!

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This cozy cushioning also makes the shoe suitable for walking around town and even for all-day wear.

And while it's not THE most cushioned daily trainer in history, the React Infinity still has a good 30 mm of heel stack underfoot. But if you want even more, try Saucony Triumph 21.

Nike-React-Infinity-Run-3-cushioning

Tips the scales

The shoe has a rather bulky weight at 10.5 oz (297g) in US men's 9. For context, the average daily trainer comes in at 9.9 oz (282 g).

Pretty clunky!

Nike-React-Infinity-Run-3-thick-sole

Move steadily with the Nike React Infinity Run Flyknit 3

The shoe's firmness paired with its wide base keeps a highly stable ride.

Based on our caliper measurements, the shoe's landing surface is about 2 mm wider than the average in both the forefoot and the heel.

Nike-React-Infinity-Run-3-wide-base

Even though it's not ideal for flat feet and overpronation, we found it to be a bit more stable than most neutral shoes. What's more, it supports tired legs.

Traction that bites

Road runners have NO issues with the shoe's traction. During their testing, they say it sticks well on wet concrete, treadmill, and light trail.

Nike-React-Infinity-Run-3-traction

Just the right fit! 

Although not as sock-like as the first iteration of the Nike React Infinity Run Flyknit, we still found the fit quite comfortable and secure.

The shoe has sufficient padding around the ankle which prevents heel slips. Plus, the upper is stretchy and conforms to the foot. 

Nike-React-Infinity-Run-3-in-shoe-feel

More than enough room

Unlike most Nike running shoes, the React Infinity Run FK 3 doesn't have a narrow toe box.

With 98.6 mm in the widest part of the upper, this Nike shoe is at the average of running shoes (98.5 mm). But the stretchy nature of its knit upper makes the shoe feel more accommodating.

Nike-React-Infinity-Run-3-forefoot-width

The upper's pliability also helps a lot in bumping up comfort. Even in the areas where our feet are usually pushed against the shoe, the Infinity Run 3 never rubbed our toes.

Nike-React-Infinity-Run-3-fit

Not your budget-friendly trainer

It's a helluva pricey shoe. Especially at full price! Given that it's better than v2 but not as great as the first version, it's really difficult to justify the price.

Nike-React-Infinity-Run-3-look

Contrary to other daily running shoes, which cost $119, on average, its $160 price tag is without a doubt a lot of money.

A stunner

The Nike Infinity Run Flyknit 3 is a wicked-looking shoe! Nike surely knows its business when it comes to style. The colorways are BOMB!

Nike-React-Infinity-Run-3-style