Written by

Brandon Law

Marathon Runner and Shoe Expert
The Structure is a supportive, neutral daily trainer; the Miler is also a mid-range, supportive trainer. Here we will be comparing these two trainers.

The Nike Structure is on its 24th version and it has evolved into a neutral trainer which is very stable. It's designed to be a well cushioned daily trainer with lots of support. It costs $120.

The Nike Miler is on its 2nd version and it is also a stable neutral trainer. It's a durable workhorse with stability features and is very versatile. It costs $130.

Which one of these Nike trainers is for you?

Similarity and differences: Air Zoom Structure 24 vs React Miler 2

Air Zoom Structure 24

Expert score
Expert score
Expert score
11.00 oz
9 oz
Heel Drop
8 mm
10 mm
The Nike Air Zoom Structure 24 is a supportive neutral trainer which can handle most types of runs. It has comfort and durability in spades and is great value for money. Version 24 is a minor, upper-only update which is more streamlined but makes the shoe heavier than its predecessor.
The Nike React Miler 2 is a max cushioned neutral trainer built with comfort in mind. It provides a comfortable ride with a hint of stability worthy of becoming your daily trainer.
Recommended for
Daily training
Daily training
Cushioning type
Cushioning amount
Highly cushioned
Highly cushioned
very stable
some stability
true to size
true to size
Retail price

Sole unit: Air Zoom Structure 24 vs React Miler 2

The midsole of the Structure 24 is made of CMP-01 which is soft and cushioned. It has plenty of cushioning for long runs and it doesn’t bottom out.

The Miler 2’s midsole is made of React foam which is firmer and doesn’t compress much. It’s still highly cushioned but it doesn’t have as much long-distance comfort as the Structure 24.

The Structure 24 is better suited to slow, easy runs as well as long runs because it has the softer ride. The Miler 2 is better for shorter, faster runs because it can pick up the pace easier than the Structure.

The biggest difference between the 2 midsoles is that the Structure 24 has a forefoot Zoom Air unit and the Miler 2 doesn’t. This makes the Miler 2 ride smoother than the Structure 24. The Structure 24 has more energy return on toe off because of the Zoom Air unit.

Both trainers are incredibly stable. The Structure 24 has a built up medial side to combat over pronation while the Miler 2 has a firmer medial post to stop over pronation. Both trainers have wide midsoles and stable bases.

The Miler 2 has the more stable ride because it has the firmer midsole so there is less lean bias in it.

When it comes to outsoles, the Structure 24 has more rubber on its outsole than the Miler 2. The Miler 2 has more exposed midsole foam on its outsole so it is less durable.

Upper unit: Air Zoom Structure 24 vs React Miler 2

The upper of the Structure 24 is like the upper of a max-cushioned trainer: plush and luxurious. It has a thick, foam-filled tongue which is attached to an inner sleeve and it has excellent foot lockdown. It fits true to size and has a spacious midfoot and toe box.

The upper of the Miler 2 is also comfortable but it’s not as padded as the Structure 24 so it’s cooler and better suited to warm climates than the Structure 24. The Miler 2’s tongue is flat and racing-inspired while also being attached to an inner sleeve. The Miler 2 runs a half size large so it’s best to size down to get the perfect fit.

Which one to buy: Air Zoom Structure 24 vs React Miler 2

If you’re looking for a comfortable daily trainer for mainly slow runs and long runs, the Structure 24 is the better choice. The Structure 24 has a highly cushioned ride which is also very stable. It’s better suited to cooler climates because of its warm upper and it fits true to size.

If you prefer a firmer ride for faster runs, the Miler 2 is the better option. It has a smoother ride because it doesn’t have an air bag and its midsole foam compresses less so it’s easier to pick up the pace in the Miler 2. The Miler 2 has a more stable ride but it costs $10 more than the Structure 24.

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.