How Does the adidas Adizero Adios Pro 4 Fit? Sizing Guide & In-Depth Review

The adidas Adizero Adios Pro 4 is one of the German sportswear company’s most advanced racing shoes. Built for serious speed and long-distance performance, it’s packed full of upgrades. Whether it’s for chasing a marathon PB or flying through a 10K, this is a shoe designed to push limits. But with all the changes, one question keeps coming up: how does it actually fit?

In this comprehensive guide, we’ll break down everything you need to know about the Adizero Adios Pro 4 from sizing all the way to comfort. So, let’s get to it!

How Does the adidas Adizero Adios Pro 4 Fit?

Fit has become one of the most discussed aspects of the Adizero Adios Pro 4. Many runners report that it runs slightly short and narrower than the Pro 3, particularly in the toebox. Those with wider feet or anyone between sizes are often advised to size up by half.

For runners with narrow or low-volume feet, the fit can feel just right at true to size. The updated upper has a bit more give than previous versions, making it possible for some to stay with their regular size. That said, it is still a risk without trying them on first.

How Comfortable is the adidas Adizero Adios Pro 4?

Once on foot, the Adizero Adios Pro 4 offers a snug, race-oriented feel that becomes almost unnoticeable at speed. The upper is softer than before, wrapping around the foot like a breathable second skin. It’s structured enough to provide support yet light enough to avoid pressure spots for most foot types.

The gusseted tongue helps with midfoot lockdown, preventing unnecessary sliding or lace pressure. That said, some runners still report issues with lace bite, especially when pulled tight for races. The heel area also remains a mixed experience. While the padding is an improvement from the Pro 3, a few have found that longer efforts can lead to discomfort unless socks or lacing are adjusted.

How Does the adidas Adizero Adios Pro 4 Perform?

This is where this adidas icon truly comes alive. The updated rocker geometry, combined with the new foam, creates a rolling sensation that propels the runner forward with little wasted motion. It’s not just light on the scale, it feels light underfoot, with smooth transitions and plenty of pop during toe-off.

The Adizero Adios Pro 4 thrives when the pace picks up. The faster the effort, the more responsive the ride becomes. Midfoot and forefoot strikers benefit most, as the shoe is built to reward runners who stay forward through the stride. Heel strikers may find things a little unstable at the rear. The soft foam and narrow heel geometry can make the back of the shoe feel slightly wobbly, especially on uneven ground or at slower speeds. While it’s usable for daily training, it performs best when used with intent.

How Durable is the adidas Adizero Adios Pro 4?

Durability is one area where the Adizero Adios Pro 4 falls slightly behind its predecessor. The softer foam, while great for energy return, tends to compress faster over time. For many runners, the bounce starts to fade around the 300-kilometre mark, earlier than the Pro 3, which often held up well beyond 500 kilometres. Heavier runners may notice this decline even sooner, especially if the shoe is used regularly for workouts or long runs.

That said, the outsole tells a different story. Thanks to the LIGHTTRAXION pattern and a Continental rubber patch at the forefoot, the grip holds strong and shows minimal wear even after repeated use on pavement. This means that while the foam may lose its race-day sharpness over time, the sole itself remains impressively intact.

The Bottom Line

The adidas Adizero Adios Pro 4 feels like the most complete race shoe the brand has released so far. Lighter than the Pro 3, softer underfoot, and smoother through transitions, it brings together speed and comfort in a way that works for serious efforts from 5K to the full marathon.

The fit won’t suit everyone. Some runners will find it too narrow or slightly short unless they go up half a size. It also performs best at pace. Slow efforts can feel awkward, especially for heel strikers or those looking for cushion over control.But when the pace quickens and the rhythm settles in, the shoe delivers. It rewards midfoot strikers with energy return and flow that feels built for racing. It’s not made for recovery days. But for those chasing time, it hits the mark.