Adidas Ultraboost 23 vs Brooks Ghost 15 Sizing
Adidas Ultraboost 23 vs Brooks Ghost 15: side-by-side fit, toe-box width and the exact size to order in each — they fit the same length. Free interactive sizing comparison.
Do the Adidas Ultraboost 23 and Brooks Ghost 15 take the same size?
Yes — keep your usual size. A US 10 in the Ultraboost 23 is about a US 10 in the Ghost 15.
How they compare
Adidas Ultraboost 23 → Brooks Ghost 15: The Adidas Ultraboost 23 runs true to size, similar in width to the Brooks Ghost 15. Your US 10 in the Ultraboost 23 translates to the same size in the Ghost 15.
Brooks Ghost 15 → Adidas Ultraboost 23: The Brooks Ghost 15 runs true to size, similar in width to the Adidas Ultraboost 23. Your US 10 in the Ghost 15 translates to the same size in the Ultraboost 23.
Spec comparison
| Spec | Adidas Ultraboost 23 | Brooks Ghost 15 |
|---|---|---|
| Length Fit | True to Size | True to Size |
| Toe Box Profile | Wide | Wide |
| Arch Support | High | High |
| Upper Material | Primeknit Textile | Mesh |
Size conversion: Adidas Ultraboost 23 → Brooks Ghost 15
If you wear these US sizes in the Ultraboost 23, here is the size to order in the Ghost 15.
| Your US size in Ultraboost 23 | Recommended Ghost 15 size |
|---|---|
| US 8 | US 8 |
| US 9 | US 9 |
| US 10 | US 10 |
| US 11 | US 11 |
| US 12 | US 12 |
Frequently asked questions
Which runs bigger, the Adidas Ultraboost 23 or the Brooks Ghost 15?
The Adidas Ultraboost 23 and Brooks Ghost 15 fit the same in length — both are true to size — so you can keep your usual size moving between them.
If I wear a US 10 in the Ultraboost 23, what size is the Ghost 15?
Target a US 10 in the Ghost 15. A US 9 in the Ultraboost 23 maps to about US 9, and a US 11 to about US 11.
Is the Ultraboost 23 wider than the Ghost 15?
The Adidas Ultraboost 23 has a similar toe box width versus the Brooks Ghost 15 (wide vs wide). Forefoot room is one of the biggest reasons two shoes at the same length still feel different.
How do the Ultraboost 23 and Ghost 15 compare on support and material?
The Ultraboost 23 pairs high arch support with a primeknit textile upper; the Ghost 15 has high support and a mesh upper.
Try it: adjust the size and compare live
Verdict
The Adidas Ultraboost 23 runs true to size, similar in width to the Brooks Ghost 15. Your US 10 in the Ultraboost 23 translates to the same size in the Ghost 15.
| Spec | Adidas Ultraboost 23 | Brooks Ghost 15 |
|---|---|---|
| Length Fit | True to Size | True to Size |
| Toe Box Profile | Wide | Wide |
| Arch Support | High | High |
| Upper Material | Primeknit Textile | Mesh |