Comparison:
Nike Infinity RN4 vs Nike Infinity Run 3
The Infinity is a premium, neutral Nike daily trainer. Here we will be comparing the Infinity RN4 with the Infinity Run 3.
Comparison:
The Infinity series is the evolution of the Epic React series which was the first Nike running shoe to feature React foam. It's a really popular daily trainer in the Nike lineup because of its comfortable upper, depth of cushioning and its modern looks. The Infinity RN4 is a very different version to the first 3 in terms of ride and looks.
This article will be able to tell you which version is better for you, the Infinity RN4 or the Infinity Run 3.
Similarity and differences: Infinity RN4 vs React Infinity Run Flyknit 3
Expert score
7/10
7/10
Weight
11.2 oz
10.20 oz
Heel Drop
mm
8 mm
Verdict
The Nike ReactX InfinityRN 4 is a trainer which is well-cushioned and stable but lacks the fun factor. Its brand new ReactX midsole doesn’t deliver much energy return and it’s only suited to easy/recovery runs. This 4th version has been completely revamped: it’s slightly softer, more comfortable, and more durable but it picks up an ounce of weight.
The Nike React Infinity Run Flyknit 3 is a neutral, max-cushioned trainer that feels like a stability trainer due to its stability features which includes arch support and a plastic heel clip. It’s best used for easy, recovery and long-distance runs because of its high level of cushioning and its gentle rocker. Version 3 has an updated upper which feels thicker as well as a new strobel lining which makes the ride slightly firmer.
Recommended for
Daily training
Daily training, long distance racing
Cushioning type
Responsive/balanced
Balanced
Cushioning amount
Highly cushioned
Highly cushioned
Flexibility
flexible
flexible
Stability
very stable
very stable
Sizing
true to size
true to size
Retail price
US$160
US$159.95
Sole unit: Infinity RN4 vs React Infinity Run Flyknit 3
The Infinity RN4 uses Nike’s new ReactX foam in its midsole. This foam is slightly softer than regular React foam. It also delivers more energy return. This new midsole foam gives the Infinity RN4 a plusher, more engaging ride than previous Infinity versions.
The Infinity Run 3 has a relatively firm ride because it has older React foam in its midsole but it still has a very cushioned ride which can handle long distances up to a marathon.
The Infinity RN4 with its plusher ride is more suited to easy runs than the Infinity Run 3. The Infinity RN 4 is also better for long distances because it’s more comfortable. The Infinity Run 3 is better for fast-paced runs due to its firmer React midsole which provides a firm platform to push off from.
One of the big differences when it comes to ride is the arch support of the Infinity Run 3. It has a prominent arch which stops your ankle from rolling excessively inward. The Infinity RN4 doesn’t have the prominent arch.
On the outsoles, The Infinity RN4 has a lot more outsole rubber. The Infinity Run 3 has exposed midsole foam which makes it less durable.
Upper unit: Infinity RN4 vs React Infinity Run Flyknit 3
The Infinity RN4 has a snugger fitting upper with a less stretchy, knitted material. The Infinity Run 3 upper is not as soft but has a more accommodating fit. The Infinity Run 3 has an additional heel clip which provides more stability.
The Infinity RN4 has a small fit so you need to go up a half size whereas the Infinity Run 3 fits true to size. Both trainers have a narrow fit with no additional widths available.
Which one to buy: Infinity RN4 vs React Infinity Run Flyknit 3
If you’re looking for a running shoe which is better for easy and recovery runs, the Infinity RN4 is the shoe you should pick. Its plusher ReactX midsole provides more comfort when you’re doing slow runs or long runs. The Infinity RN4 also has a more durable outsole which will last longer.
If you prefer a firmer shoe which performs better on faster runs, the Infinity Run 3 is the shoe you should pick. It has more stability features and it doesn’t compress as much when the midsole is loaded. It also has a more accommodating upper fit if you have high volume feet.
This expert review is written by
Brandon Law
Marathon Runner and Shoe Expert
Brandon is a South African who lives and trains in Malaysia. He is a marathon runner who eats, sleeps and dreams running shoes. While most people wear shoes to run, he runs to wear shoes.
